"To answer your question: if there is a power failure while the saw is
running, the cartridge might stay powered for about 1-2 seconds at most
while its internal voltage falls off.
So under those conditions (saw coasting down, no power to saw at all)
touching the blade would not activate the safety system."
So here is how I read this. If the lights go out you try not to
continue sawing. In the event you are very close to the blade while
cutting and the power fails the blade is going to stop more quickly and
the brake may activate before the blade stops.
On 12/7/2012 12:32 PM, dpb wrote:
> On 12/7/2012 8:30 AM, Leon wrote:
>> On 12/7/2012 8:11 AM, dpb wrote:
>>> On 12/7/2012 7:54 AM, Leon wrote:
>>>> On 12/6/2012 9:30 PM, dpb wrote:
>>>>> On 12/6/2012 9:22 PM, Leon wrote:
>>>>>> On 12/6/2012 6:10 PM, dpb wrote:
>>>>>>> On 12/6/2012 5:39 PM, Leon wrote:
>>>>>>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>>>>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>>>>>>> "To answer your question: if there is a power failure while the
>>>>>>>>>> saw is
>>>>>>>>>> running, the cartridge might stay powered for about 1-2
>>>>>>>>>> seconds at
>>>>>>>>>> most
>>>>>>>>>> while its internal voltage falls off.
>>>>>>>>>>
>>>>>>>>>> So under those conditions (saw coasting down, no power to saw at
>>>>>>>>>> all)
>>>>>>>>>> touching the blade would not activate the safety system."
>>>>>>> ...
>>>>>>>>>> So here is how I read this. If the lights go out you try not to
>>>>>>>>>> continue
>>>>>>>>>> sawing. In the event you are very close to the blade while
>>>>>>>>>> cutting
>>>>>>>>>> and
>>>>>>>>>> the power fails the blade is going to stop more quickly and the
>>>>>>>>>> brake
>>>>>>>>>> may activate before the blade stops.
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> How so????...they just explicitly said "under those conditions...
>>>>>>>>> touching the blade would not activate the safety system."
>>>>>>>>
>>>>>>>> Power for one to two seconds to trip the brake is enough. I
>>>>>>>> think if
>>>>>>>> you
>>>>>>>> have a black out you are not likely to continue pushing your hand
>>>>>>>> towards the blade and if you do the wood should stop the blade.
>>>>>>> ...
>>>>>>>
>>>>>>> I repeat their words...
>>>>>>>
>>>>>>>>>>> "So under those conditions (saw coasting down, no power to
>>>>>>>>>>> saw at
>>>>>>>>>>> all)
>>>>>>>>>>> touching the blade would not activate the safety system."
>>>>>>>
>>>>>>> No power, no trip...
>>>>>>>
>>>>>>> --
>>>>>>>
>>>>>>
>>>>>> Read his first paragraph. He is just covering his ass in the event
>>>>>> that
>>>>>> does not work.
>>>>>
>>>>> Read his last words--he said it won't work reliable...which means it
>>>>> doesn't work and isn't intended to work.
>>>>>
>>>
>>>> Does not work reliably = Does not work. Not in my world.
>>>
>>> When the designer/manufacturer says "would not activate the safety
>>> system" I think he says exactly what he means. He didn't even say it
>>> _might_ work; he said the event which is to be protected against "would
>>> not activate the safety system". Can't get more clear than that.
>>
>>
>> Actually he did say it "might" work. copied from his reply,
>>
>> if there is a power failure while the saw is running, the cartridge
>> might stay powered for about 1-2 seconds at most while its internal
>> voltage falls off.
>>
>>
>> Now granted any time after the 1~2 seconds you would be unprotected from
>> the spinning blade.
>>
>> Again I read that as the stop might trigger at the moment after the
>> power failure but not after 1~2 seconds.
>
> The operative word there is "might"...and if the discussion stopped
> there I might even tend to think he meant what you seem to want it to
> mean. But, he didn't--he went on and said it won't actuate. Just
> because it has some voltage that might keep the sensor electronics alive
> for a while that doesn't mean it'll have enough current to actually blow
> the fusible link when it wasn't designed for such.
>
> You're stretching for some reason I've no clue of why it seems so
> important to you.
>
> I'm killing the thread now so I'm no longer tempted to respond any
> longer...it's asinine. If you think there really is some way his words
> are misinterpreted then follow up and ask for the clarification but I
> think the odds are about Ivory pure that he'll tell you precisely what
> I've done--the sensor electronics may live for a short time but there's
> essentially no chance there's enough power to actually trigger the brake
> once't you pull the plug.
>
> --
Ok he said it might work for 1~2 seconds. BUT because it takes longer
for spin down to happen it is not going to protect during the whole spin
down time period, only the first 1~2 seconds.
Since you do not know what my question to him was, that may be the
problem. I asked if the saw would protect in the even of a power
failure. A simple answer of NO would have been sufficient if it would
not protect during a power failure. Because as he explained, the
cartridge might stay powered for about 1-2 seconds at most while its
internal voltage falls off, you might be protected for the second or two
after the power failure.
After that period of time you would not be protected during the
remainder of the coast down.
Either way, you are likely to be cut if every thing goes wrong but there
is a slight window of opportunity where you ge an extra second or two
that another brand saw would not afford you.
On 12/8/2012 10:45 AM, Ed Pawlowski wrote:
> On Sat, 08 Dec 2012 08:36:04 -0600, Leon <lcb11211@swbelldotnet>
> wrote:
>
>
>
>> Ok he said it might work for 1~2 seconds. BUT because it takes longer
>> for spin down to happen it is not going to protect during the whole spin
>> down time period, only the first 1~2 seconds.
>>
>> Since you do not know what my question to him was, that may be the
>> problem. I asked if the saw would protect in the even of a power
>> failure. A simple answer of NO would have been sufficient if it would
>> not protect during a power failure. Because as he explained, the
>> cartridge might stay powered for about 1-2 seconds at most while its
>> internal voltage falls off, you might be protected for the second or two
>> after the power failure.
>>
>> After that period of time you would not be protected during the
>> remainder of the coast down.
>>
>> Either way, you are likely to be cut if every thing goes wrong but there
>> is a slight window of opportunity where you ge an extra second or two
>> that another brand saw would not afford you.
>>
>
> In reality, how much protection do you need? Spin down of a blade
> with no load takes a few seconds, a blade in the middle of a cut stops
> quickly by comparison. I've had the lights go out. I just froze
> until everything was quiet. Normal reaction time would still keep you
> a good distance from the blade if you were still pushing.
>
> Yes, things can go wrong and we can argue theory all day, but in real
> life, I don't see it as a problem. Certainly not a deal beaker for
> me.
>
Exactly
On 12/8/2012 1:17 PM, Richard wrote:
>>>>>>
>>>>>>
>>>>> Unless your nickname is "lefty", generally PARRALLEL to the blade.
>>>>>
>>>> And yet if your hand does not come closer to the blade as you push,
>>>> regardless of of parallel or directly towards, you are not feeding the
>>>> wood. You hand has to move closer to the blade to feed.
>>>
>>> I never let my hands get anywhere near the table, much less the blade.
>>>
>>> Make a few pushers, and use them.
>>
>> Surely your comment is a troll... But to address that, the table is not
>> going to hurt you, it is that round spinning thing that will. If you
>> don't understand that an accident is headed your way. Push sticks are no
>> safer than using your bare hand, something to hold down the work as you
>> push your wood through is by far safer in that they will further help to
>> prevent the front feed end of the work from lifting.
>>
>>
>>
>>
>>
>
> Troll?
>
> I'm not going to argue with you, Leon.
> You do it your way.
That's what I thought.
On 12/7/2012 10:50 PM, Richard wrote:
> On 12/7/2012 7:11 PM, Leon wrote:
>> On 12/7/2012 3:11 PM, [email protected] wrote:
>>> On Thu, 06 Dec 2012 21:20:55 -0600, Leon <lcb11211@swbelldotnet>
>>> wrote:
>>>
>>>> On 12/6/2012 5:59 PM, Richard wrote:
>>>>> On 12/6/2012 5:39 PM, Leon wrote:
>>>>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>>>>> "To answer your question: if there is a power failure while the
>>>>>>>> saw is
>>>>>>>> running, the cartridge might stay powered for about 1-2 seconds
>>>>>>>> at most
>>>>>>>> while its internal voltage falls off.
>>>>>>>>
>>>>>>>> So under those conditions (saw coasting down, no power to saw at
>>>>>>>> all)
>>>>>>>> touching the blade would not activate the safety system."
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> So here is how I read this. If the lights go out you try not to
>>>>>>>> continue
>>>>>>>> sawing. In the event you are very close to the blade while
>>>>>>>> cutting and
>>>>>>>> the power fails the blade is going to stop more quickly and the
>>>>>>>> brake
>>>>>>>> may activate before the blade stops.
>>>>>>>>
>>>>>>>
>>>>>>> How so????...they just explicitly said "under those conditions...
>>>>>>> touching the blade would not activate the safety system."
>>>>>>
>>>>>> Power for one to two seconds to trip the brake is enough. I think
>>>>>> if you
>>>>>> have a black out you are not likely to continue pushing your hand
>>>>>> towards the blade and if you do the wood should stop the blade.
>>>>>
>>>>>
>>>>> Why are you pushing your HAND toward the blade in the first place?
>>>>
>>>> Well what direction do you push your hand when cutting wood on a TS?
>>>>
>>>>
>>>>
>>> Unless your nickname is "lefty", generally PARRALLEL to the blade.
>>>
>> And yet if your hand does not come closer to the blade as you push,
>> regardless of of parallel or directly towards, you are not feeding the
>> wood. You hand has to move closer to the blade to feed.
>
> I never let my hands get anywhere near the table, much less the blade.
>
> Make a few pushers, and use them.
Surely your comment is a troll... But to address that, the table is not
going to hurt you, it is that round spinning thing that will. If you
don't understand that an accident is headed your way. Push sticks are
no safer than using your bare hand, something to hold down the work as
you push your wood through is by far safer in that they will further
help to prevent the front feed end of the work from lifting.
Leon wrote:
> "To answer your question: if there is a power failure while the saw is
> running, the cartridge might stay powered for about 1-2 seconds at most
> while its internal voltage falls off.
>
> So under those conditions (saw coasting down, no power to saw at all)
> touching the blade would not activate the safety system."
>
>
>
> So here is how I read this. If the lights go out you try not to
> continue sawing. In the event you are very close to the blade while
> cutting and the power fails the blade is going to stop more quickly and
> the brake may activate before the blade stops.
>
>
>
How about those impatient souls who turn off the saw then get cut by
the coasting blade as they grab the cut-off piece of wood. Does the
safety system remain active for more than two seconds after the saw is
turned off?
--
G.W. Ross
Take my advice, I don't use it anyway.
On Thu, 06 Dec 2012 21:20:55 -0600, Leon <lcb11211@swbelldotnet>
wrote:
>On 12/6/2012 5:59 PM, Richard wrote:
>> On 12/6/2012 5:39 PM, Leon wrote:
>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>> "To answer your question: if there is a power failure while the saw is
>>>>> running, the cartridge might stay powered for about 1-2 seconds at most
>>>>> while its internal voltage falls off.
>>>>>
>>>>> So under those conditions (saw coasting down, no power to saw at all)
>>>>> touching the blade would not activate the safety system."
>>>>>
>>>>>
>>>>>
>>>>> So here is how I read this. If the lights go out you try not to
>>>>> continue
>>>>> sawing. In the event you are very close to the blade while cutting and
>>>>> the power fails the blade is going to stop more quickly and the brake
>>>>> may activate before the blade stops.
>>>>>
>>>>
>>>> How so????...they just explicitly said "under those conditions...
>>>> touching the blade would not activate the safety system."
>>>
>>> Power for one to two seconds to trip the brake is enough. I think if you
>>> have a black out you are not likely to continue pushing your hand
>>> towards the blade and if you do the wood should stop the blade.
>>
>>
>> Why are you pushing your HAND toward the blade in the first place?
>
>Well what direction do you push your hand when cutting wood on a TS?
>
>
>
Unless your nickname is "lefty", generally PARRALLEL to the blade.
On 12/7/2012 7:11 PM, Leon wrote:
> On 12/7/2012 3:11 PM, [email protected] wrote:
>> On Thu, 06 Dec 2012 21:20:55 -0600, Leon <lcb11211@swbelldotnet>
>> wrote:
>>
>>> On 12/6/2012 5:59 PM, Richard wrote:
>>>> On 12/6/2012 5:39 PM, Leon wrote:
>>>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>>>> "To answer your question: if there is a power failure while the
>>>>>>> saw is
>>>>>>> running, the cartridge might stay powered for about 1-2 seconds
>>>>>>> at most
>>>>>>> while its internal voltage falls off.
>>>>>>>
>>>>>>> So under those conditions (saw coasting down, no power to saw at
>>>>>>> all)
>>>>>>> touching the blade would not activate the safety system."
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> So here is how I read this. If the lights go out you try not to
>>>>>>> continue
>>>>>>> sawing. In the event you are very close to the blade while
>>>>>>> cutting and
>>>>>>> the power fails the blade is going to stop more quickly and the
>>>>>>> brake
>>>>>>> may activate before the blade stops.
>>>>>>>
>>>>>>
>>>>>> How so????...they just explicitly said "under those conditions...
>>>>>> touching the blade would not activate the safety system."
>>>>>
>>>>> Power for one to two seconds to trip the brake is enough. I think
>>>>> if you
>>>>> have a black out you are not likely to continue pushing your hand
>>>>> towards the blade and if you do the wood should stop the blade.
>>>>
>>>>
>>>> Why are you pushing your HAND toward the blade in the first place?
>>>
>>> Well what direction do you push your hand when cutting wood on a TS?
>>>
>>>
>>>
>> Unless your nickname is "lefty", generally PARRALLEL to the blade.
>>
> And yet if your hand does not come closer to the blade as you push,
> regardless of of parallel or directly towards, you are not feeding the
> wood. You hand has to move closer to the blade to feed.
I never let my hands get anywhere near the table, much less the blade.
Make a few pushers, and use them.
On 12/6/2012 6:28 PM, dpb wrote:
> On 12/6/2012 4:52 PM, Leon wrote:
>> "To answer your question: if there is a power failure while the saw is
>> running, the cartridge might stay powered for about 1-2 seconds at most
>> while its internal voltage falls off.
>>
>> So under those conditions (saw coasting down, no power to saw at all)
>> touching the blade would not activate the safety system."
>>
>>
>>
>> So here is how I read this. If the lights go out you try not to continue
>> sawing. In the event you are very close to the blade while cutting and
>> the power fails the blade is going to stop more quickly and the brake
>> may activate before the blade stops.
>>
>
> How so????...they just explicitly said "under those conditions...
> touching the blade would not activate the safety system."
>
> My reading is the sensor electronics may hang on for very short time but
> again w/o power the likelihood of the fusible link firing is essentially
> zero.
>
> I'd guess there's also a decent chance the power transient may trash the
> processor anyway, even if the absolute voltage Vcc hasn't dropped below
> the Vmin threshold.
>
> --
remember this operates like a GFCI , I don't think it will trash it.
There is a chance that the moment b4 power loss, that this might think
this is grounded and fire w/remaining voltage. But doubtful.
On 12/6/2012 6:10 PM, dpb wrote:
> On 12/6/2012 5:39 PM, Leon wrote:
>> On 12/6/2012 5:28 PM, dpb wrote:
>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>> "To answer your question: if there is a power failure while the saw is
>>>> running, the cartridge might stay powered for about 1-2 seconds at most
>>>> while its internal voltage falls off.
>>>>
>>>> So under those conditions (saw coasting down, no power to saw at all)
>>>> touching the blade would not activate the safety system."
> ...
>>>> So here is how I read this. If the lights go out you try not to
>>>> continue
>>>> sawing. In the event you are very close to the blade while cutting and
>>>> the power fails the blade is going to stop more quickly and the brake
>>>> may activate before the blade stops.
>>>>
>>>
>>> How so????...they just explicitly said "under those conditions...
>>> touching the blade would not activate the safety system."
>>
>> Power for one to two seconds to trip the brake is enough. I think if you
>> have a black out you are not likely to continue pushing your hand
>> towards the blade and if you do the wood should stop the blade.
> ...
>
> I repeat their words...
>
>>>>> "So under those conditions (saw coasting down, no power to saw at all)
>>>>> touching the blade would not activate the safety system."
>
> No power, no trip...
>
> --
>
Read his first paragraph. He is just covering his ass in the event that
does not work.
On 12/6/2012 5:59 PM, Richard wrote:
> On 12/6/2012 5:39 PM, Leon wrote:
>> On 12/6/2012 5:28 PM, dpb wrote:
>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>> "To answer your question: if there is a power failure while the saw is
>>>> running, the cartridge might stay powered for about 1-2 seconds at most
>>>> while its internal voltage falls off.
>>>>
>>>> So under those conditions (saw coasting down, no power to saw at all)
>>>> touching the blade would not activate the safety system."
>>>>
>>>>
>>>>
>>>> So here is how I read this. If the lights go out you try not to
>>>> continue
>>>> sawing. In the event you are very close to the blade while cutting and
>>>> the power fails the blade is going to stop more quickly and the brake
>>>> may activate before the blade stops.
>>>>
>>>
>>> How so????...they just explicitly said "under those conditions...
>>> touching the blade would not activate the safety system."
>>
>> Power for one to two seconds to trip the brake is enough. I think if you
>> have a black out you are not likely to continue pushing your hand
>> towards the blade and if you do the wood should stop the blade.
>
>
> Why are you pushing your HAND toward the blade in the first place?
Well what direction do you push your hand when cutting wood on a TS?
On 12/6/2012 5:38 PM, John Grossbohlin wrote:
>
> "Leon" <lcb11211@swbelldotnet> wrote in message
> news:[email protected]...
>> "To answer your question: if there is a power failure while the saw is
>> running, the cartridge might stay powered for about 1-2 seconds at
>> most while its internal voltage falls off.
>>
>> So under those conditions (saw coasting down, no power to saw at all)
>> touching the blade would not activate the safety system."
>>
>>
>>
>> So here is how I read this. If the lights go out you try not to
>> continue sawing. In the event you are very close to the blade while
>> cutting and the power fails the blade is going to stop more quickly
>> and the brake may activate before the blade stops.
>>
>
> Hmmmm..... a product flaw that is ripe for lawsuit picking. In the
> scenario where the power fails the workman cannot see to control the
> wood or keep his/her hands clear of the blade and gets badly cut as the
> saw is winding down. This problem was foreseeable and preventable... One
> or more large capacitors, or a UPS (uninterruptable power supply) on the
> safety device could have kept the safety device active for several
> seconds or more giving the saw time to wind down and the user to safely
> remove their hands from the danger area. Out lawyer the lawyer? ;~)
>
> John
>
>
So do you propose going after the power company? Under normal
circumstances the saw safety will work. If the lights go out and the
motor looses power I suspect no one will blame the saw should an
accident happen.
On 12/6/2012 6:06 PM, G. Ross wrote:
> Leon wrote:
>> "To answer your question: if there is a power failure while the saw is
>> running, the cartridge might stay powered for about 1-2 seconds at most
>> while its internal voltage falls off.
>>
>> So under those conditions (saw coasting down, no power to saw at all)
>> touching the blade would not activate the safety system."
>>
>>
>>
>> So here is how I read this. If the lights go out you try not to
>> continue sawing. In the event you are very close to the blade while
>> cutting and the power fails the blade is going to stop more quickly and
>> the brake may activate before the blade stops.
>>
>>
>>
> How about those impatient souls who turn off the saw then get cut by the
> coasting blade as they grab the cut-off piece of wood. Does the safety
> system remain active for more than two seconds after the saw is turned off?
>
Yes the system is active after the motor is turned off and the blade is
still spinning.
On 12/7/2012 8:11 AM, dpb wrote:
> On 12/7/2012 7:54 AM, Leon wrote:
>> On 12/6/2012 9:30 PM, dpb wrote:
>>> On 12/6/2012 9:22 PM, Leon wrote:
>>>> On 12/6/2012 6:10 PM, dpb wrote:
>>>>> On 12/6/2012 5:39 PM, Leon wrote:
>>>>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>>>>> "To answer your question: if there is a power failure while the
>>>>>>>> saw is
>>>>>>>> running, the cartridge might stay powered for about 1-2 seconds at
>>>>>>>> most
>>>>>>>> while its internal voltage falls off.
>>>>>>>>
>>>>>>>> So under those conditions (saw coasting down, no power to saw at
>>>>>>>> all)
>>>>>>>> touching the blade would not activate the safety system."
>>>>> ...
>>>>>>>> So here is how I read this. If the lights go out you try not to
>>>>>>>> continue
>>>>>>>> sawing. In the event you are very close to the blade while cutting
>>>>>>>> and
>>>>>>>> the power fails the blade is going to stop more quickly and the
>>>>>>>> brake
>>>>>>>> may activate before the blade stops.
>>>>>>>>
>>>>>>>
>>>>>>> How so????...they just explicitly said "under those conditions...
>>>>>>> touching the blade would not activate the safety system."
>>>>>>
>>>>>> Power for one to two seconds to trip the brake is enough. I think if
>>>>>> you
>>>>>> have a black out you are not likely to continue pushing your hand
>>>>>> towards the blade and if you do the wood should stop the blade.
>>>>> ...
>>>>>
>>>>> I repeat their words...
>>>>>
>>>>>>>>> "So under those conditions (saw coasting down, no power to saw at
>>>>>>>>> all)
>>>>>>>>> touching the blade would not activate the safety system."
>>>>>
>>>>> No power, no trip...
>>>>>
>>>>> --
>>>>>
>>>>
>>>> Read his first paragraph. He is just covering his ass in the event that
>>>> does not work.
>>>
>>> Read his last words--he said it won't work reliable...which means it
>>> doesn't work and isn't intended to work.
>>>
>
>> Does not work reliably = Does not work. Not in my world.
>
> When the designer/manufacturer says "would not activate the safety
> system" I think he says exactly what he means. He didn't even say it
> _might_ work; he said the event which is to be protected against "would
> not activate the safety system". Can't get more clear than that.
Actually he did say it "might" work. copied from his reply,
if there is a power failure while the saw is running, the cartridge
might stay powered for about 1-2 seconds at most while its internal
voltage falls off.
Now granted any time after the 1~2 seconds you would be unprotected from
the spinning blade.
Again I read that as the stop might trigger at the moment after the
power failure but not after 1~2 seconds.
In article <[email protected]>, lcb11211
@swbelldotnet says...
> On 12/7/2012 12:32 PM, dpb wrote:
> > On 12/7/2012 8:30 AM, Leon wrote:
> >> On 12/7/2012 8:11 AM, dpb wrote:
> >>> On 12/7/2012 7:54 AM, Leon wrote:
> >>>> On 12/6/2012 9:30 PM, dpb wrote:
> >>>>> On 12/6/2012 9:22 PM, Leon wrote:
> >>>>>> On 12/6/2012 6:10 PM, dpb wrote:
> >>>>>>> On 12/6/2012 5:39 PM, Leon wrote:
> >>>>>>>> On 12/6/2012 5:28 PM, dpb wrote:
> >>>>>>>>> On 12/6/2012 4:52 PM, Leon wrote:
> >>>>>>>>>> "To answer your question: if there is a power failure while the
> >>>>>>>>>> saw is
> >>>>>>>>>> running, the cartridge might stay powered for about 1-2
> >>>>>>>>>> seconds at
> >>>>>>>>>> most
> >>>>>>>>>> while its internal voltage falls off.
> >>>>>>>>>>
> >>>>>>>>>> So under those conditions (saw coasting down, no power to saw at
> >>>>>>>>>> all)
> >>>>>>>>>> touching the blade would not activate the safety system."
> >>>>>>> ...
> >>>>>>>>>> So here is how I read this. If the lights go out you try not to
> >>>>>>>>>> continue
> >>>>>>>>>> sawing. In the event you are very close to the blade while
> >>>>>>>>>> cutting
> >>>>>>>>>> and
> >>>>>>>>>> the power fails the blade is going to stop more quickly and the
> >>>>>>>>>> brake
> >>>>>>>>>> may activate before the blade stops.
> >>>>>>>>>>
> >>>>>>>>>
> >>>>>>>>> How so????...they just explicitly said "under those conditions...
> >>>>>>>>> touching the blade would not activate the safety system."
> >>>>>>>>
> >>>>>>>> Power for one to two seconds to trip the brake is enough. I
> >>>>>>>> think if
> >>>>>>>> you
> >>>>>>>> have a black out you are not likely to continue pushing your hand
> >>>>>>>> towards the blade and if you do the wood should stop the blade.
> >>>>>>> ...
> >>>>>>>
> >>>>>>> I repeat their words...
> >>>>>>>
> >>>>>>>>>>> "So under those conditions (saw coasting down, no power to
> >>>>>>>>>>> saw at
> >>>>>>>>>>> all)
> >>>>>>>>>>> touching the blade would not activate the safety system."
> >>>>>>>
> >>>>>>> No power, no trip...
> >>>>>>>
> >>>>>>> --
> >>>>>>>
> >>>>>>
> >>>>>> Read his first paragraph. He is just covering his ass in the event
> >>>>>> that
> >>>>>> does not work.
> >>>>>
> >>>>> Read his last words--he said it won't work reliable...which means it
> >>>>> doesn't work and isn't intended to work.
> >>>>>
> >>>
> >>>> Does not work reliably = Does not work. Not in my world.
> >>>
> >>> When the designer/manufacturer says "would not activate the safety
> >>> system" I think he says exactly what he means. He didn't even say it
> >>> _might_ work; he said the event which is to be protected against "would
> >>> not activate the safety system". Can't get more clear than that.
> >>
> >>
> >> Actually he did say it "might" work. copied from his reply,
> >>
> >> if there is a power failure while the saw is running, the cartridge
> >> might stay powered for about 1-2 seconds at most while its internal
> >> voltage falls off.
> >>
> >>
> >> Now granted any time after the 1~2 seconds you would be unprotected from
> >> the spinning blade.
> >>
> >> Again I read that as the stop might trigger at the moment after the
> >> power failure but not after 1~2 seconds.
> >
> > The operative word there is "might"...and if the discussion stopped
> > there I might even tend to think he meant what you seem to want it to
> > mean. But, he didn't--he went on and said it won't actuate. Just
> > because it has some voltage that might keep the sensor electronics alive
> > for a while that doesn't mean it'll have enough current to actually blow
> > the fusible link when it wasn't designed for such.
> >
> > You're stretching for some reason I've no clue of why it seems so
> > important to you.
> >
> > I'm killing the thread now so I'm no longer tempted to respond any
> > longer...it's asinine. If you think there really is some way his words
> > are misinterpreted then follow up and ask for the clarification but I
> > think the odds are about Ivory pure that he'll tell you precisely what
> > I've done--the sensor electronics may live for a short time but there's
> > essentially no chance there's enough power to actually trigger the brake
> > once't you pull the plug.
> >
> > --
>
> Ok he said it might work for 1~2 seconds. BUT because it takes longer
> for spin down to happen it is not going to protect during the whole spin
> down time period, only the first 1~2 seconds.
>
> Since you do not know what my question to him was, that may be the
> problem. I asked if the saw would protect in the even of a power
> failure. A simple answer of NO would have been sufficient if it would
> not protect during a power failure. Because as he explained, the
> cartridge might stay powered for about 1-2 seconds at most while its
> internal voltage falls off, you might be protected for the second or two
> after the power failure.
>
> After that period of time you would not be protected during the
> remainder of the coast down.
>
> Either way, you are likely to be cut if every thing goes wrong but there
> is a slight window of opportunity where you ge an extra second or two
> that another brand saw would not afford you.
Why not write back to them/him, quote the explanation and say, "Is this
a yes or a no?" and end all speculation.
On 12/6/2012 5:39 PM, Leon wrote:
> On 12/6/2012 5:28 PM, dpb wrote:
>> On 12/6/2012 4:52 PM, Leon wrote:
>>> "To answer your question: if there is a power failure while the saw is
>>> running, the cartridge might stay powered for about 1-2 seconds at most
>>> while its internal voltage falls off.
>>>
>>> So under those conditions (saw coasting down, no power to saw at all)
>>> touching the blade would not activate the safety system."
>>>
>>>
>>>
>>> So here is how I read this. If the lights go out you try not to continue
>>> sawing. In the event you are very close to the blade while cutting and
>>> the power fails the blade is going to stop more quickly and the brake
>>> may activate before the blade stops.
>>>
>>
>> How so????...they just explicitly said "under those conditions...
>> touching the blade would not activate the safety system."
>
> Power for one to two seconds to trip the brake is enough. I think if you
> have a black out you are not likely to continue pushing your hand
> towards the blade and if you do the wood should stop the blade.
Why are you pushing your HAND toward the blade in the first place?
I'm going to misquote Wilbur Wright - If you want perfect safety
go sit on the fence... (but fasten a seat belt so you don't fall off!)
On 12/6/2012 9:30 PM, dpb wrote:
> On 12/6/2012 9:22 PM, Leon wrote:
>> On 12/6/2012 6:10 PM, dpb wrote:
>>> On 12/6/2012 5:39 PM, Leon wrote:
>>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>>> "To answer your question: if there is a power failure while the
>>>>>> saw is
>>>>>> running, the cartridge might stay powered for about 1-2 seconds at
>>>>>> most
>>>>>> while its internal voltage falls off.
>>>>>>
>>>>>> So under those conditions (saw coasting down, no power to saw at all)
>>>>>> touching the blade would not activate the safety system."
>>> ...
>>>>>> So here is how I read this. If the lights go out you try not to
>>>>>> continue
>>>>>> sawing. In the event you are very close to the blade while cutting
>>>>>> and
>>>>>> the power fails the blade is going to stop more quickly and the brake
>>>>>> may activate before the blade stops.
>>>>>>
>>>>>
>>>>> How so????...they just explicitly said "under those conditions...
>>>>> touching the blade would not activate the safety system."
>>>>
>>>> Power for one to two seconds to trip the brake is enough. I think if
>>>> you
>>>> have a black out you are not likely to continue pushing your hand
>>>> towards the blade and if you do the wood should stop the blade.
>>> ...
>>>
>>> I repeat their words...
>>>
>>>>>>> "So under those conditions (saw coasting down, no power to saw at
>>>>>>> all)
>>>>>>> touching the blade would not activate the safety system."
>>>
>>> No power, no trip...
>>>
>>> --
>>>
>>
>> Read his first paragraph. He is just covering his ass in the event that
>> does not work.
>
> Read his last words--he said it won't work reliable...which means it
> doesn't work and isn't intended to work.
>
> --
Does not work reliably = Does not work. Not in my world.
On 12/6/2012 10:11 PM, Ed Pawlowski wrote:
> On Thu, 06 Dec 2012 21:20:55 -0600, Leon <lcb11211@swbelldotnet>
> wrote:
>
>
>
>>>> Power for one to two seconds to trip the brake is enough. I think if you
>>>> have a black out you are not likely to continue pushing your hand
>>>> towards the blade and if you do the wood should stop the blade.
>>>
>>>
>>> Why are you pushing your HAND toward the blade in the first place?
>>
>> Well what direction do you push your hand when cutting wood on a TS?
>>
>>
>>
>
> I never push towards the blade. I push towards the back of the saw,
> usually along the fence or holding a push block. NEVER in line with
> the blade.
>
But pushing towards the back of the saw is towards the blade. Not
directly but your hand actually comes closer when pushing. That is the
point I am making.
"Leon" <lcb11211@swbelldotnet> wrote in message
news:[email protected]...
> "To answer your question: if there is a power failure while the saw is
> running, the cartridge might stay powered for about 1-2 seconds at most
> while its internal voltage falls off.
>
> So under those conditions (saw coasting down, no power to saw at all)
> touching the blade would not activate the safety system."
>
>
>
> So here is how I read this. If the lights go out you try not to continue
> sawing. In the event you are very close to the blade while cutting and
> the power fails the blade is going to stop more quickly and the brake may
> activate before the blade stops.
>
Hmmmm..... a product flaw that is ripe for lawsuit picking. In the scenario
where the power fails the workman cannot see to control the wood or keep
his/her hands clear of the blade and gets badly cut as the saw is winding
down. This problem was foreseeable and preventable... One or more large
capacitors, or a UPS (uninterruptable power supply) on the safety device
could have kept the safety device active for several seconds or more giving
the saw time to wind down and the user to safely remove their hands from the
danger area. Out lawyer the lawyer? ;~)
John
On 12/7/2012 3:11 PM, [email protected] wrote:
> On Thu, 06 Dec 2012 21:20:55 -0600, Leon <lcb11211@swbelldotnet>
> wrote:
>
>> On 12/6/2012 5:59 PM, Richard wrote:
>>> On 12/6/2012 5:39 PM, Leon wrote:
>>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>>> "To answer your question: if there is a power failure while the saw is
>>>>>> running, the cartridge might stay powered for about 1-2 seconds at most
>>>>>> while its internal voltage falls off.
>>>>>>
>>>>>> So under those conditions (saw coasting down, no power to saw at all)
>>>>>> touching the blade would not activate the safety system."
>>>>>>
>>>>>>
>>>>>>
>>>>>> So here is how I read this. If the lights go out you try not to
>>>>>> continue
>>>>>> sawing. In the event you are very close to the blade while cutting and
>>>>>> the power fails the blade is going to stop more quickly and the brake
>>>>>> may activate before the blade stops.
>>>>>>
>>>>>
>>>>> How so????...they just explicitly said "under those conditions...
>>>>> touching the blade would not activate the safety system."
>>>>
>>>> Power for one to two seconds to trip the brake is enough. I think if you
>>>> have a black out you are not likely to continue pushing your hand
>>>> towards the blade and if you do the wood should stop the blade.
>>>
>>>
>>> Why are you pushing your HAND toward the blade in the first place?
>>
>> Well what direction do you push your hand when cutting wood on a TS?
>>
>>
>>
> Unless your nickname is "lefty", generally PARRALLEL to the blade.
>
And yet if your hand does not come closer to the blade as you push,
regardless of of parallel or directly towards, you are not feeding the
wood. You hand has to move closer to the blade to feed.
On 12/6/2012 5:28 PM, dpb wrote:
> On 12/6/2012 4:52 PM, Leon wrote:
>> "To answer your question: if there is a power failure while the saw is
>> running, the cartridge might stay powered for about 1-2 seconds at most
>> while its internal voltage falls off.
>>
>> So under those conditions (saw coasting down, no power to saw at all)
>> touching the blade would not activate the safety system."
>>
>>
>>
>> So here is how I read this. If the lights go out you try not to continue
>> sawing. In the event you are very close to the blade while cutting and
>> the power fails the blade is going to stop more quickly and the brake
>> may activate before the blade stops.
>>
>
> How so????...they just explicitly said "under those conditions...
> touching the blade would not activate the safety system."
Power for one to two seconds to trip the brake is enough. I think if
you have a black out you are not likely to continue pushing your hand
towards the blade and if you do the wood should stop the blade.
Not as safe but a lot of things would have to go wrong besides the
lights and power going out.
On Sat, 08 Dec 2012 08:36:04 -0600, Leon <lcb11211@swbelldotnet>
wrote:
>Ok he said it might work for 1~2 seconds. BUT because it takes longer
>for spin down to happen it is not going to protect during the whole spin
>down time period, only the first 1~2 seconds.
>
>Since you do not know what my question to him was, that may be the
>problem. I asked if the saw would protect in the even of a power
>failure. A simple answer of NO would have been sufficient if it would
>not protect during a power failure. Because as he explained, the
>cartridge might stay powered for about 1-2 seconds at most while its
>internal voltage falls off, you might be protected for the second or two
>after the power failure.
>
>After that period of time you would not be protected during the
>remainder of the coast down.
>
>Either way, you are likely to be cut if every thing goes wrong but there
>is a slight window of opportunity where you ge an extra second or two
>that another brand saw would not afford you.
>
In reality, how much protection do you need? Spin down of a blade
with no load takes a few seconds, a blade in the middle of a cut stops
quickly by comparison. I've had the lights go out. I just froze
until everything was quiet. Normal reaction time would still keep you
a good distance from the blade if you were still pushing.
Yes, things can go wrong and we can argue theory all day, but in real
life, I don't see it as a problem. Certainly not a deal beaker for
me.
On 12/9/2012 7:21 AM, phorbin wrote:
> In article <[email protected]>, lcb11211
> @swbelldotnet says...
>> On 12/7/2012 12:32 PM, dpb wrote:
>>> On 12/7/2012 8:30 AM, Leon wrote:
>>>> On 12/7/2012 8:11 AM, dpb wrote:
>>>>> On 12/7/2012 7:54 AM, Leon wrote:
>>>>>> On 12/6/2012 9:30 PM, dpb wrote:
>>>>>>> On 12/6/2012 9:22 PM, Leon wrote:
>>>>>>>> On 12/6/2012 6:10 PM, dpb wrote:
>>>>>>>>> On 12/6/2012 5:39 PM, Leon wrote:
>>>>>>>>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>>>>>>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>>>>>>>>> "To answer your question: if there is a power failure while the
>>>>>>>>>>>> saw is
>>>>>>>>>>>> running, the cartridge might stay powered for about 1-2
>>>>>>>>>>>> seconds at
>>>>>>>>>>>> most
>>>>>>>>>>>> while its internal voltage falls off.
>>>>>>>>>>>>
>>>>>>>>>>>> So under those conditions (saw coasting down, no power to saw at
>>>>>>>>>>>> all)
>>>>>>>>>>>> touching the blade would not activate the safety system."
>>>>>>>>> ...
>>>>>>>>>>>> So here is how I read this. If the lights go out you try not to
>>>>>>>>>>>> continue
>>>>>>>>>>>> sawing. In the event you are very close to the blade while
>>>>>>>>>>>> cutting
>>>>>>>>>>>> and
>>>>>>>>>>>> the power fails the blade is going to stop more quickly and the
>>>>>>>>>>>> brake
>>>>>>>>>>>> may activate before the blade stops.
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> How so????...they just explicitly said "under those conditions...
>>>>>>>>>>> touching the blade would not activate the safety system."
>>>>>>>>>>
>>>>>>>>>> Power for one to two seconds to trip the brake is enough. I
>>>>>>>>>> think if
>>>>>>>>>> you
>>>>>>>>>> have a black out you are not likely to continue pushing your hand
>>>>>>>>>> towards the blade and if you do the wood should stop the blade.
>>>>>>>>> ...
>>>>>>>>>
>>>>>>>>> I repeat their words...
>>>>>>>>>
>>>>>>>>>>>>> "So under those conditions (saw coasting down, no power to
>>>>>>>>>>>>> saw at
>>>>>>>>>>>>> all)
>>>>>>>>>>>>> touching the blade would not activate the safety system."
>>>>>>>>>
>>>>>>>>> No power, no trip...
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>>
>>>>>>>>
>>>>>>>> Read his first paragraph. He is just covering his ass in the event
>>>>>>>> that
>>>>>>>> does not work.
>>>>>>>
>>>>>>> Read his last words--he said it won't work reliable...which means it
>>>>>>> doesn't work and isn't intended to work.
>>>>>>>
>>>>>
>>>>>> Does not work reliably = Does not work. Not in my world.
>>>>>
>>>>> When the designer/manufacturer says "would not activate the safety
>>>>> system" I think he says exactly what he means. He didn't even say it
>>>>> _might_ work; he said the event which is to be protected against "would
>>>>> not activate the safety system". Can't get more clear than that.
>>>>
>>>>
>>>> Actually he did say it "might" work. copied from his reply,
>>>>
>>>> if there is a power failure while the saw is running, the cartridge
>>>> might stay powered for about 1-2 seconds at most while its internal
>>>> voltage falls off.
>>>>
>>>>
>>>> Now granted any time after the 1~2 seconds you would be unprotected from
>>>> the spinning blade.
>>>>
>>>> Again I read that as the stop might trigger at the moment after the
>>>> power failure but not after 1~2 seconds.
>>>
>>> The operative word there is "might"...and if the discussion stopped
>>> there I might even tend to think he meant what you seem to want it to
>>> mean. But, he didn't--he went on and said it won't actuate. Just
>>> because it has some voltage that might keep the sensor electronics alive
>>> for a while that doesn't mean it'll have enough current to actually blow
>>> the fusible link when it wasn't designed for such.
>>>
>>> You're stretching for some reason I've no clue of why it seems so
>>> important to you.
>>>
>>> I'm killing the thread now so I'm no longer tempted to respond any
>>> longer...it's asinine. If you think there really is some way his words
>>> are misinterpreted then follow up and ask for the clarification but I
>>> think the odds are about Ivory pure that he'll tell you precisely what
>>> I've done--the sensor electronics may live for a short time but there's
>>> essentially no chance there's enough power to actually trigger the brake
>>> once't you pull the plug.
>>>
>>> --
>>
>> Ok he said it might work for 1~2 seconds. BUT because it takes longer
>> for spin down to happen it is not going to protect during the whole spin
>> down time period, only the first 1~2 seconds.
>>
>> Since you do not know what my question to him was, that may be the
>> problem. I asked if the saw would protect in the even of a power
>> failure. A simple answer of NO would have been sufficient if it would
>> not protect during a power failure. Because as he explained, the
>> cartridge might stay powered for about 1-2 seconds at most while its
>> internal voltage falls off, you might be protected for the second or two
>> after the power failure.
>>
>> After that period of time you would not be protected during the
>> remainder of the coast down.
>>
>> Either way, you are likely to be cut if every thing goes wrong but there
>> is a slight window of opportunity where you ge an extra second or two
>> that another brand saw would not afford you.
>
> Why not write back to them/him, quote the explanation and say, "Is this
> a yes or a no?" and end all speculation.
>
Because the answer would be yes if every thing and the timing is just
right for 1~2 seconds and no it would not work normally.
It is not a designed feature so it might or might not work.
On 12/8/2012 8:22 AM, Leon wrote:
> On 12/7/2012 10:50 PM, Richard wrote:
>> On 12/7/2012 7:11 PM, Leon wrote:
>>> On 12/7/2012 3:11 PM, [email protected] wrote:
>>>> On Thu, 06 Dec 2012 21:20:55 -0600, Leon <lcb11211@swbelldotnet>
>>>> wrote:
>>>>
>>>>> On 12/6/2012 5:59 PM, Richard wrote:
>>>>>> On 12/6/2012 5:39 PM, Leon wrote:
>>>>>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>>>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>>>>>> "To answer your question: if there is a power failure while the
>>>>>>>>> saw is
>>>>>>>>> running, the cartridge might stay powered for about 1-2 seconds
>>>>>>>>> at most
>>>>>>>>> while its internal voltage falls off.
>>>>>>>>>
>>>>>>>>> So under those conditions (saw coasting down, no power to saw at
>>>>>>>>> all)
>>>>>>>>> touching the blade would not activate the safety system."
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> So here is how I read this. If the lights go out you try not to
>>>>>>>>> continue
>>>>>>>>> sawing. In the event you are very close to the blade while
>>>>>>>>> cutting and
>>>>>>>>> the power fails the blade is going to stop more quickly and the
>>>>>>>>> brake
>>>>>>>>> may activate before the blade stops.
>>>>>>>>>
>>>>>>>>
>>>>>>>> How so????...they just explicitly said "under those conditions...
>>>>>>>> touching the blade would not activate the safety system."
>>>>>>>
>>>>>>> Power for one to two seconds to trip the brake is enough. I think
>>>>>>> if you
>>>>>>> have a black out you are not likely to continue pushing your hand
>>>>>>> towards the blade and if you do the wood should stop the blade.
>>>>>>
>>>>>>
>>>>>> Why are you pushing your HAND toward the blade in the first place?
>>>>>
>>>>> Well what direction do you push your hand when cutting wood on a TS?
>>>>>
>>>>>
>>>>>
>>>> Unless your nickname is "lefty", generally PARRALLEL to the blade.
>>>>
>>> And yet if your hand does not come closer to the blade as you push,
>>> regardless of of parallel or directly towards, you are not feeding the
>>> wood. You hand has to move closer to the blade to feed.
>>
>> I never let my hands get anywhere near the table, much less the blade.
>>
>> Make a few pushers, and use them.
>
> Surely your comment is a troll... But to address that, the table is not
> going to hurt you, it is that round spinning thing that will. If you
> don't understand that an accident is headed your way. Push sticks are no
> safer than using your bare hand, something to hold down the work as you
> push your wood through is by far safer in that they will further help to
> prevent the front feed end of the work from lifting.
>
>
>
>
>
Troll?
I'm not going to argue with you, Leon.
You do it your way.
On 12/6/2012 4:52 PM, Leon wrote:
> "To answer your question: if there is a power failure while the saw is
> running, the cartridge might stay powered for about 1-2 seconds at most
> while its internal voltage falls off.
>
> So under those conditions (saw coasting down, no power to saw at all)
> touching the blade would not activate the safety system."
>
>
>
> So here is how I read this. If the lights go out you try not to continue
> sawing. In the event you are very close to the blade while cutting and
> the power fails the blade is going to stop more quickly and the brake
> may activate before the blade stops.
>
How so????...they just explicitly said "under those conditions...
touching the blade would not activate the safety system."
My reading is the sensor electronics may hang on for very short time but
again w/o power the likelihood of the fusible link firing is essentially
zero.
I'd guess there's also a decent chance the power transient may trash the
processor anyway, even if the absolute voltage Vcc hasn't dropped below
the Vmin threshold.
--
In article <[email protected]>,
[email protected] says...
> On Sun, 9 Dec 2012 08:21:12 -0500, phorbin <[email protected]> wrote:
> >Why not write back to them/him, quote the explanation and say, "Is this
> >a yes or a no?" and end all speculation.
>
> And for you, why not trim over 120 lines of wasted text?
> "Is this a yes or a no?" and end the speculation that you know what
> you're doing.
Fair enough... ...but you should probably make your own oatmeal.
On Sun, 9 Dec 2012 08:21:12 -0500, phorbin <[email protected]> wrote:
>Why not write back to them/him, quote the explanation and say, "Is this
>a yes or a no?" and end all speculation.
And for you, why not trim over 120 lines of wasted text?
"Is this a yes or a no?" and end the speculation that you know what
you're doing.
On 12/6/2012 5:39 PM, Leon wrote:
> On 12/6/2012 5:28 PM, dpb wrote:
>> On 12/6/2012 4:52 PM, Leon wrote:
>>> "To answer your question: if there is a power failure while the saw is
>>> running, the cartridge might stay powered for about 1-2 seconds at most
>>> while its internal voltage falls off.
>>>
>>> So under those conditions (saw coasting down, no power to saw at all)
>>> touching the blade would not activate the safety system."
...
>>> So here is how I read this. If the lights go out you try not to continue
>>> sawing. In the event you are very close to the blade while cutting and
>>> the power fails the blade is going to stop more quickly and the brake
>>> may activate before the blade stops.
>>>
>>
>> How so????...they just explicitly said "under those conditions...
>> touching the blade would not activate the safety system."
>
> Power for one to two seconds to trip the brake is enough. I think if you
> have a black out you are not likely to continue pushing your hand
> towards the blade and if you do the wood should stop the blade.
...
I repeat their words...
>>>> "So under those conditions (saw coasting down, no power to saw at all)
>>>> touching the blade would not activate the safety system."
No power, no trip...
--
On 12/6/2012 6:06 PM, G. Ross wrote:
...
> How about those impatient souls who turn off the saw then get cut by the
> coasting blade as they grab the cut-off piece of wood. Does the safety
> system remain active for more than two seconds after the saw is turned off?
This isn't turning the saw off; it's loss of power _to_ the
saw...totally different.
--
On 12/6/2012 9:22 PM, Leon wrote:
> On 12/6/2012 6:10 PM, dpb wrote:
>> On 12/6/2012 5:39 PM, Leon wrote:
>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>> "To answer your question: if there is a power failure while the saw is
>>>>> running, the cartridge might stay powered for about 1-2 seconds at
>>>>> most
>>>>> while its internal voltage falls off.
>>>>>
>>>>> So under those conditions (saw coasting down, no power to saw at all)
>>>>> touching the blade would not activate the safety system."
>> ...
>>>>> So here is how I read this. If the lights go out you try not to
>>>>> continue
>>>>> sawing. In the event you are very close to the blade while cutting and
>>>>> the power fails the blade is going to stop more quickly and the brake
>>>>> may activate before the blade stops.
>>>>>
>>>>
>>>> How so????...they just explicitly said "under those conditions...
>>>> touching the blade would not activate the safety system."
>>>
>>> Power for one to two seconds to trip the brake is enough. I think if you
>>> have a black out you are not likely to continue pushing your hand
>>> towards the blade and if you do the wood should stop the blade.
>> ...
>>
>> I repeat their words...
>>
>>>>>> "So under those conditions (saw coasting down, no power to saw at
>>>>>> all)
>>>>>> touching the blade would not activate the safety system."
>>
>> No power, no trip...
>>
>> --
>>
>
> Read his first paragraph. He is just covering his ass in the event that
> does not work.
Read his last words--he said it won't work reliable...which means it
doesn't work and isn't intended to work.
--
On 12/7/2012 7:54 AM, Leon wrote:
> On 12/6/2012 9:30 PM, dpb wrote:
>> On 12/6/2012 9:22 PM, Leon wrote:
>>> On 12/6/2012 6:10 PM, dpb wrote:
>>>> On 12/6/2012 5:39 PM, Leon wrote:
>>>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>>>> "To answer your question: if there is a power failure while the
>>>>>>> saw is
>>>>>>> running, the cartridge might stay powered for about 1-2 seconds at
>>>>>>> most
>>>>>>> while its internal voltage falls off.
>>>>>>>
>>>>>>> So under those conditions (saw coasting down, no power to saw at
>>>>>>> all)
>>>>>>> touching the blade would not activate the safety system."
>>>> ...
>>>>>>> So here is how I read this. If the lights go out you try not to
>>>>>>> continue
>>>>>>> sawing. In the event you are very close to the blade while cutting
>>>>>>> and
>>>>>>> the power fails the blade is going to stop more quickly and the
>>>>>>> brake
>>>>>>> may activate before the blade stops.
>>>>>>>
>>>>>>
>>>>>> How so????...they just explicitly said "under those conditions...
>>>>>> touching the blade would not activate the safety system."
>>>>>
>>>>> Power for one to two seconds to trip the brake is enough. I think if
>>>>> you
>>>>> have a black out you are not likely to continue pushing your hand
>>>>> towards the blade and if you do the wood should stop the blade.
>>>> ...
>>>>
>>>> I repeat their words...
>>>>
>>>>>>>> "So under those conditions (saw coasting down, no power to saw at
>>>>>>>> all)
>>>>>>>> touching the blade would not activate the safety system."
>>>>
>>>> No power, no trip...
>>>>
>>>> --
>>>>
>>>
>>> Read his first paragraph. He is just covering his ass in the event that
>>> does not work.
>>
>> Read his last words--he said it won't work reliable...which means it
>> doesn't work and isn't intended to work.
>>
> Does not work reliably = Does not work. Not in my world.
When the designer/manufacturer says "would not activate the safety
system" I think he says exactly what he means. He didn't even say it
_might_ work; he said the event which is to be protected against "would
not activate the safety system". Can't get more clear than that.
Write him back w/ your "explanation" of how that isn't actually what he
said and see what he says in return...
--
On 12/7/2012 8:30 AM, Leon wrote:
> On 12/7/2012 8:11 AM, dpb wrote:
>> On 12/7/2012 7:54 AM, Leon wrote:
>>> On 12/6/2012 9:30 PM, dpb wrote:
>>>> On 12/6/2012 9:22 PM, Leon wrote:
>>>>> On 12/6/2012 6:10 PM, dpb wrote:
>>>>>> On 12/6/2012 5:39 PM, Leon wrote:
>>>>>>> On 12/6/2012 5:28 PM, dpb wrote:
>>>>>>>> On 12/6/2012 4:52 PM, Leon wrote:
>>>>>>>>> "To answer your question: if there is a power failure while the
>>>>>>>>> saw is
>>>>>>>>> running, the cartridge might stay powered for about 1-2 seconds at
>>>>>>>>> most
>>>>>>>>> while its internal voltage falls off.
>>>>>>>>>
>>>>>>>>> So under those conditions (saw coasting down, no power to saw at
>>>>>>>>> all)
>>>>>>>>> touching the blade would not activate the safety system."
>>>>>> ...
>>>>>>>>> So here is how I read this. If the lights go out you try not to
>>>>>>>>> continue
>>>>>>>>> sawing. In the event you are very close to the blade while cutting
>>>>>>>>> and
>>>>>>>>> the power fails the blade is going to stop more quickly and the
>>>>>>>>> brake
>>>>>>>>> may activate before the blade stops.
>>>>>>>>>
>>>>>>>>
>>>>>>>> How so????...they just explicitly said "under those conditions...
>>>>>>>> touching the blade would not activate the safety system."
>>>>>>>
>>>>>>> Power for one to two seconds to trip the brake is enough. I think if
>>>>>>> you
>>>>>>> have a black out you are not likely to continue pushing your hand
>>>>>>> towards the blade and if you do the wood should stop the blade.
>>>>>> ...
>>>>>>
>>>>>> I repeat their words...
>>>>>>
>>>>>>>>>> "So under those conditions (saw coasting down, no power to saw at
>>>>>>>>>> all)
>>>>>>>>>> touching the blade would not activate the safety system."
>>>>>>
>>>>>> No power, no trip...
>>>>>>
>>>>>> --
>>>>>>
>>>>>
>>>>> Read his first paragraph. He is just covering his ass in the event
>>>>> that
>>>>> does not work.
>>>>
>>>> Read his last words--he said it won't work reliable...which means it
>>>> doesn't work and isn't intended to work.
>>>>
>>
>>> Does not work reliably = Does not work. Not in my world.
>>
>> When the designer/manufacturer says "would not activate the safety
>> system" I think he says exactly what he means. He didn't even say it
>> _might_ work; he said the event which is to be protected against "would
>> not activate the safety system". Can't get more clear than that.
>
>
> Actually he did say it "might" work. copied from his reply,
>
> if there is a power failure while the saw is running, the cartridge
> might stay powered for about 1-2 seconds at most while its internal
> voltage falls off.
>
>
> Now granted any time after the 1~2 seconds you would be unprotected from
> the spinning blade.
>
> Again I read that as the stop might trigger at the moment after the
> power failure but not after 1~2 seconds.
The operative word there is "might"...and if the discussion stopped
there I might even tend to think he meant what you seem to want it to
mean. But, he didn't--he went on and said it won't actuate. Just
because it has some voltage that might keep the sensor electronics alive
for a while that doesn't mean it'll have enough current to actually blow
the fusible link when it wasn't designed for such.
You're stretching for some reason I've no clue of why it seems so
important to you.
I'm killing the thread now so I'm no longer tempted to respond any
longer...it's asinine. If you think there really is some way his words
are misinterpreted then follow up and ask for the clarification but I
think the odds are about Ivory pure that he'll tell you precisely what
I've done--the sensor electronics may live for a short time but there's
essentially no chance there's enough power to actually trigger the brake
once't you pull the plug.
--
On 12/8/2012 8:36 AM, Leon wrote:
...
> Ok he said it might work for 1~2 seconds. BUT because it takes longer
> for spin down to happen it is not going to protect during the whole spin
> down time period, only the first 1~2 seconds.
>
> Since you do not know what my question to him was, that may be the
> problem. I asked if the saw would protect in the even of a power
> failure. A simple answer of NO would have been sufficient if it would
> not protect during a power failure. Because as he explained, the
> cartridge might stay powered for about 1-2 seconds at most while its
> internal voltage falls off, you might be protected for the second or two
> after the power failure.
>
> After that period of time you would not be protected during the
> remainder of the coast down.
>
> Either way, you are likely to be cut if every thing goes wrong but there
> is a slight window of opportunity where you ge an extra second or two
> that another brand saw would not afford you.
...
OK, I said I wouldn't but... :)
I spent a number of years designing, analyzing and licensing safety
systems for commercial reactors (amongst many other things alongst the
way; this was mostly early 10-15 yr).
If I had _ever_ written such an assessment of a functional safety system
or tried to weasel-word such testimony as a "might" to the ACRS
(Advisory Committee on Reactor Safeguards the ultimate technical body
that made the judgments on vendor issues before the NRC) it would
certainly have been deemed as "doesn't work" and we'd have had to start
over.
Not to mention, of course, my employer would have likely terminated me
before the hearing was over for such incompetence as to think somehow
that would be 'ok' for a safety system to perhaps work some of the time
or then again, maybe it won't. :)
IOW, from what (I presume Dr Gass) wrote, it's clear the scenario is
_not_ considered in the design and therefore it's almost purely
happenstance if it were to happen to actually trigger under those
circumstances. That, to me, is about as clear a "no" as it gets.
I think there's essentially no additional protection over any other saw
under those conditions. That's not to say it isn't a well-designed and
functional system for what the design _does_ include but there's no
point in trying to claim it's capable of something that isn't intended
on the basis of a random event occurring.
--
On 12/9/2012 7:58 AM, Leon wrote:
...
> Now I think we are seeing it the same way. ;~) The explanation would be
> similar to the selling the smoothness of the blade elevation wheel. You
> can turn it by hand or give it a quick spin and it will spin a few times
> on it's own. Not really a feature but something that might happen if the
> stars align properly.
Glad to see you finally come around, Leon!!! :) <vbg,d&r)
--
On 12/9/2012 8:42 AM, dpb wrote:
> On 12/9/2012 7:58 AM, Leon wrote:
> ...
>
>> Now I think we are seeing it the same way. ;~) The explanation would be
>> similar to the selling the smoothness of the blade elevation wheel. You
>> can turn it by hand or give it a quick spin and it will spin a few times
>> on it's own. Not really a feature but something that might happen if the
>> stars align properly.
>
> Glad to see you finally come around, Leon!!! :) <vbg,d&r)
>
> --
;~O
On 12/7/2012 11:17 AM, John Grossbohlin wrote:
>
> "Leon" <lcb11211@swbelldotnet> wrote in message
> news:[email protected]...
>> On 12/6/2012 5:38 PM, John Grossbohlin wrote:
>>>
>>> "Leon" <lcb11211@swbelldotnet> wrote in message
>>> news:[email protected]...
>>>> "To answer your question: if there is a power failure while the saw is
>>>> running, the cartridge might stay powered for about 1-2 seconds at
>>>> most while its internal voltage falls off.
>>>>
>>>> So under those conditions (saw coasting down, no power to saw at all)
>>>> touching the blade would not activate the safety system."
>>>>
>>>>
>>>>
>>>> So here is how I read this. If the lights go out you try not to
>>>> continue sawing. In the event you are very close to the blade while
>>>> cutting and the power fails the blade is going to stop more quickly
>>>> and the brake may activate before the blade stops.
>>>>
>>>
>>> Hmmmm..... a product flaw that is ripe for lawsuit picking. In the
>>> scenario where the power fails the workman cannot see to control the
>>> wood or keep his/her hands clear of the blade and gets badly cut as the
>>> saw is winding down. This problem was foreseeable and preventable... One
>>> or more large capacitors, or a UPS (uninterruptable power supply) on the
>>> safety device could have kept the safety device active for several
>>> seconds or more giving the saw time to wind down and the user to safely
>>> remove their hands from the danger area. Out lawyer the lawyer? ;~)
>>>
>>> John
>>>
>>>
>>
>> So do you propose going after the power company? Under normal
>> circumstances the saw safety will work. If the lights go out and the
>> motor looses power I suspect no one will blame the saw should an
>> accident happen.
>
> No... poking fun at the flawless product...
>
>
Oh, OK, ;~)
On Thu, 06 Dec 2012 21:20:55 -0600, Leon <lcb11211@swbelldotnet>
wrote:
>>> Power for one to two seconds to trip the brake is enough. I think if you
>>> have a black out you are not likely to continue pushing your hand
>>> towards the blade and if you do the wood should stop the blade.
>>
>>
>> Why are you pushing your HAND toward the blade in the first place?
>
>Well what direction do you push your hand when cutting wood on a TS?
>
>
>
I never push towards the blade. I push towards the back of the saw,
usually along the fence or holding a push block. NEVER in line with
the blade.
"Leon" <lcb11211@swbelldotnet> wrote in message
news:[email protected]...
> On 12/6/2012 5:38 PM, John Grossbohlin wrote:
>>
>> "Leon" <lcb11211@swbelldotnet> wrote in message
>> news:[email protected]...
>>> "To answer your question: if there is a power failure while the saw is
>>> running, the cartridge might stay powered for about 1-2 seconds at
>>> most while its internal voltage falls off.
>>>
>>> So under those conditions (saw coasting down, no power to saw at all)
>>> touching the blade would not activate the safety system."
>>>
>>>
>>>
>>> So here is how I read this. If the lights go out you try not to
>>> continue sawing. In the event you are very close to the blade while
>>> cutting and the power fails the blade is going to stop more quickly
>>> and the brake may activate before the blade stops.
>>>
>>
>> Hmmmm..... a product flaw that is ripe for lawsuit picking. In the
>> scenario where the power fails the workman cannot see to control the
>> wood or keep his/her hands clear of the blade and gets badly cut as the
>> saw is winding down. This problem was foreseeable and preventable... One
>> or more large capacitors, or a UPS (uninterruptable power supply) on the
>> safety device could have kept the safety device active for several
>> seconds or more giving the saw time to wind down and the user to safely
>> remove their hands from the danger area. Out lawyer the lawyer? ;~)
>>
>> John
>>
>>
>
> So do you propose going after the power company? Under normal
> circumstances the saw safety will work. If the lights go out and the
> motor looses power I suspect no one will blame the saw should an accident
> happen.
No... poking fun at the flawless product...
On 12/8/2012 3:00 PM, dpb wrote:
> On 12/8/2012 8:36 AM, Leon wrote:
> ...
>
>> Ok he said it might work for 1~2 seconds. BUT because it takes longer
>> for spin down to happen it is not going to protect during the whole spin
>> down time period, only the first 1~2 seconds.
>>
>> Since you do not know what my question to him was, that may be the
>> problem. I asked if the saw would protect in the even of a power
>> failure. A simple answer of NO would have been sufficient if it would
>> not protect during a power failure. Because as he explained, the
>> cartridge might stay powered for about 1-2 seconds at most while its
>> internal voltage falls off, you might be protected for the second or two
>> after the power failure.
>>
>> After that period of time you would not be protected during the
>> remainder of the coast down.
>>
>> Either way, you are likely to be cut if every thing goes wrong but there
>> is a slight window of opportunity where you ge an extra second or two
>> that another brand saw would not afford you.
>
> ...
>
> OK, I said I wouldn't but... :)
>
> I spent a number of years designing, analyzing and licensing safety
> systems for commercial reactors (amongst many other things alongst the
> way; this was mostly early 10-15 yr).
>
> If I had _ever_ written such an assessment of a functional safety system
> or tried to weasel-word such testimony as a "might" to the ACRS
> (Advisory Committee on Reactor Safeguards the ultimate technical body
> that made the judgments on vendor issues before the NRC) it would
> certainly have been deemed as "doesn't work" and we'd have had to start
> over.
>
> Not to mention, of course, my employer would have likely terminated me
> before the hearing was over for such incompetence as to think somehow
> that would be 'ok' for a safety system to perhaps work some of the time
> or then again, maybe it won't. :)
>
> IOW, from what (I presume Dr Gass) wrote, it's clear the scenario is
> _not_ considered in the design and therefore it's almost purely
> happenstance if it were to happen to actually trigger under those
> circumstances. That, to me, is about as clear a "no" as it gets.
>
> I think there's essentially no additional protection over any other saw
> under those conditions. That's not to say it isn't a well-designed and
> functional system for what the design _does_ include but there's no
> point in trying to claim it's capable of something that isn't intended
> on the basis of a random event occurring.
>
> --
Now I think we are seeing it the same way. ;~) The explanation would
be similar to the selling the smoothness of the blade elevation wheel.
You can turn it by hand or give it a quick spin and it will spin a few
times on it's own. Not really a feature but something that might happen
if the stars align properly.