My bandsaw has developed considerable vibration so I set out to mitigate it.
Took off blade, covers, etc. to check if the wheels were coplanar. They
are. Balanced? Yep, very well AAMOF.
That pretty much leave the belts so I ordered somr link belt even though the
exiating ones have very little set. The motor is mounted in a way that
makes it easy to use longer or shorter belts, within reason, so my question
is this: am I better off vibration wise in using a long or short belt?
On Mon, 3 Oct 2016 17:28:45 -0400, "dadiOH" <[email protected]> wrote:
>My bandsaw has developed considerable vibration so I set out to mitigate it.
>Took off blade, covers, etc. to check if the wheels were coplanar. They
>are. Balanced? Yep, very well AAMOF.
>
>That pretty much leave the belts so I ordered somr link belt even though the
>exiating ones have very little set. The motor is mounted in a way that
>makes it easy to use longer or shorter belts, within reason, so my question
>is this: am I better off vibration wise in using a long or short belt?
>
http://www.harborfreight.com/vibration-free-link-belt-43771.html
Similar belts at Woodcraft, Rockler, etc.
Belts that sit a long time will take a "set" and the motor pulley is
usually the smallest one. If you take off the belt and let it rest on
the table and you see the memory of a small pulley curve it will
affect the operation for a good five or ten minutes until the belt
warms up and then things will quiet down.
If the motor pulley and the driven pulley are not in a perfectly
straight line it also will affect the operations. It will eventually
cause the motor pulley to have excessive wear on one side and you can
tell by looking at the motor pulley with the belt off.
Also, if everything looks straight and the belt is tight like on your
old auto engines it will cause excessive wear, again on the motor
pulley, and will wear a grove in it. With the belt off run your
fingernail up either side. If you feel a ridge on either side, or
both, you will get belt slapping and vibration as it goes in and out
of that grove.
Any wear on the motor pulley is reason to replace it, it shortens the
life of belts and causes the problems mentioned above.
New pulley? Get a new belt. If the pulleys are rated or sized for an
A, B, or C belt always buy for the pulley style.
Small motor pulleys under 3.5 inches should be a toothed belt or
better yet, one like the one linked to above. It reduces wear and tear
on the pulley and the vibration it can create, as well a reduce the
amperage on the motor draw. Always have about 1/2, to 1 inch
deflection on the belt when tightened according to manf specs.
Checking the motor actual amperage against the nameplate rating will
tell you if your are too tight, drawing more amperage than it is rated
for, or too loose. Loose belts can also squeal and the saw will
seemingly stall if the belts are not tight enough.
The belt shown about and linked to, is highly recommended in most all
cases, especially for table saws. It will cost you less to operate,
will run quieter, and reduce vibration even with new pulleys. Follow
the instructions to the "T" about readjusting after an hour or two of
operation and you will not be disappointed. Save the excess links in
case your belt ever comes apart to replace the broken link. Although I
never have had to do so. And yes, I can vouch for less vibration and
smooth running. (Making sure the motor mounts are all tight and the
pulley system is "co planar")
>> My bandsaw has developed considerable vibration so I set out to mitigate it.
>> Took off blade, covers, etc. to check if the wheels were coplanar. They
>> are. Balanced? Yep, very well AAMOF.
>>
>> That pretty much leave the belts so I ordered somr link belt even though the
>> exiating ones have very little set. The motor is mounted in a way that
>> makes it easy to use longer or shorter belts, within reason, so my question
>> is this: am I better off vibration wise in using a long or short belt?
>
>Until excessively short I don't think it'll make any real difference.
>
>I'm not sold much on the belt and vibration theory; even if they sit for
>a while lightweight B cross-section belts don't take long at all to warm
>up and work out any "set". Sorta' like only nylon-cord bias ply tires
>in the winter starting out in the morning.
>
>I'd be looking at possibly getting some kink in a blade or weld location
>hardening, tires getting flattened or perhaps bunching (that is, not
>evenly distributed around the wheel so slight variations in thickness)
>or the like.
>
>What's the characterics of the vibration can be informative as well...
Very aged tires can become "punky" for lack of a better word -
the rubber composition changed / deteoriated ...
I would be looking there before the belt ...
as others have suggested.
John T.
On 10/3/2016 4:28 PM, dadiOH wrote:
> My bandsaw has developed considerable vibration so I set out to mitigate it.
> Took off blade, covers, etc. to check if the wheels were coplanar. They
> are. Balanced? Yep, very well AAMOF.
>
> That pretty much leave the belts so I ordered somr link belt even though the
> exiating ones have very little set. The motor is mounted in a way that
> makes it easy to use longer or shorter belts, within reason, so my question
> is this: am I better off vibration wise in using a long or short belt?
>
>
The shorter the span the less the belt will vibrate.
"Spalted Walt" <[email protected]> wrote in message
news:[email protected]...
> "dadiOH" <[email protected]> wrote:
>
>> My bandsaw has developed considerable vibration so I set out to mitigate
>> it.
>> Took off blade, covers, etc. to check if the wheels were coplanar.
>
> That was your first mistake: https://youtu.be/wGbZqWac0jU?t=357
Not a mistake, they are exactly how they came.
>
>> That pretty much leave the belts
>
> And tires and bearings, especially if you leave your blade tensioned
> for long periods of non-use.
Bearings are fine, tires need minimal dressing, blade is never left
tensioned so, do you know about belts or not?
On 10/03/2016 4:28 PM, dadiOH wrote:
> My bandsaw has developed considerable vibration so I set out to mitigate it.
> Took off blade, covers, etc. to check if the wheels were coplanar. They
> are. Balanced? Yep, very well AAMOF.
>
> That pretty much leave the belts so I ordered somr link belt even though the
> exiating ones have very little set. The motor is mounted in a way that
> makes it easy to use longer or shorter belts, within reason, so my question
> is this: am I better off vibration wise in using a long or short belt?
Until excessively short I don't think it'll make any real difference.
I'm not sold much on the belt and vibration theory; even if they sit for
a while lightweight B cross-section belts don't take long at all to warm
up and work out any "set". Sorta' like only nylon-cord bias ply tires
in the winter starting out in the morning.
I'd be looking at possibly getting some kink in a blade or weld location
hardening, tires getting flattened or perhaps bunching (that is, not
evenly distributed around the wheel so slight variations in thickness)
or the like.
What's the characterics of the vibration can be informative as well...
On 10/03/2016 7:12 PM, [email protected] wrote:
...
> Very aged tires can become "punky" for lack of a better word -
> the rubber composition changed / deteoriated ...
> I would be looking there before the belt ...
> as others have suggested.
> John T.
Indeed, very similar to my earlier--the other thing is buildup _under_
the tire, particularly if somebody tried to glue 'em on at some time...
"Leon" <lcb11211@swbelldotnet> wrote in message
news:[email protected]...
> On 10/3/2016 4:28 PM, dadiOH wrote:
>> My bandsaw has developed considerable vibration so I set out to mitigate
>> it.
>> Took off blade, covers, etc. to check if the wheels were coplanar. They
>> are. Balanced? Yep, very well AAMOF.
>>
>> That pretty much leave the belts so I ordered somr link belt even though
>> the
>> exiating ones have very little set. The motor is mounted in a way that
>> makes it easy to use longer or shorter belts, within reason, so my
>> question
>> is this: am I better off vibration wise in using a long or short belt?
>>
>>
>
>
> The shorter the span the less the belt will vibrate.
Thank you :)
"OFWW" <[email protected]> wrote in message
news:[email protected]...
> On Mon, 3 Oct 2016 17:28:45 -0400, "dadiOH" <[email protected]> wrote:
>
>>My bandsaw has developed considerable vibration so I set out to mitigate
>>it.
>>Took off blade, covers, etc. to check if the wheels were coplanar. They
>>are. Balanced? Yep, very well AAMOF.
>>
>>That pretty much leave the belts so I ordered somr link belt even though
>>the
>>exiating ones have very little set. The motor is mounted in a way that
>>makes it easy to use longer or shorter belts, within reason, so my
>>question
>>is this: am I better off vibration wise in using a long or short belt?
>>
> http://www.harborfreight.com/vibration-free-link-belt-43771.html
>
> Similar belts at Woodcraft, Rockler, etc.
>
> Belts that sit a long time will take a "set" and the motor pulley is
> usually the smallest one. If you take off the belt and let it rest on
> the table and you see the memory of a small pulley curve it will
> affect the operation for a good five or ten minutes until the belt
> warms up and then things will quiet down.
>
> If the motor pulley and the driven pulley are not in a perfectly
> straight line it also will affect the operations. It will eventually
> cause the motor pulley to have excessive wear on one side and you can
> tell by looking at the motor pulley with the belt off.
>
> Also, if everything looks straight and the belt is tight like on your
> old auto engines it will cause excessive wear, again on the motor
> pulley, and will wear a grove in it. With the belt off run your
> fingernail up either side. If you feel a ridge on either side, or
> both, you will get belt slapping and vibration as it goes in and out
> of that grove.
>
> Any wear on the motor pulley is reason to replace it, it shortens the
> life of belts and causes the problems mentioned above.
>
> New pulley? Get a new belt. If the pulleys are rated or sized for an
> A, B, or C belt always buy for the pulley style.
>
> Small motor pulleys under 3.5 inches should be a toothed belt or
> better yet, one like the one linked to above. It reduces wear and tear
> on the pulley and the vibration it can create, as well a reduce the
> amperage on the motor draw. Always have about 1/2, to 1 inch
> deflection on the belt when tightened according to manf specs.
>
> Checking the motor actual amperage against the nameplate rating will
> tell you if your are too tight, drawing more amperage than it is rated
> for, or too loose. Loose belts can also squeal and the saw will
> seemingly stall if the belts are not tight enough.
>
> The belt shown about and linked to, is highly recommended in most all
> cases, especially for table saws. It will cost you less to operate,
> will run quieter, and reduce vibration even with new pulleys. Follow
> the instructions to the "T" about readjusting after an hour or two of
> operation and you will not be disappointed. Save the excess links in
> case your belt ever comes apart to replace the broken link. Although I
> never have had to do so. And yes, I can vouch for less vibration and
> smooth running. (Making sure the motor mounts are all tight and the
> pulley system is "co planar")
Thank you.
"dadiOH" <[email protected]> wrote:
> My bandsaw has developed considerable vibration so I set out to mitigate it.
> Took off blade, covers, etc. to check if the wheels were coplanar.
That was your first mistake: https://youtu.be/wGbZqWac0jU?t=357
> That pretty much leave the belts
And tires and bearings, especially if you leave your blade tensioned
for long periods of non-use.