Alex Solla on mon 26 may 03
Vince et al,
Was looking through one of my woodworking mags yesterday and wondering if one of these linked belts designed for tablesaws could be used as a replacement belt on a wheel? Has anyone tried this? My thought was to get one for my tablesaw, and grab a second for my wheel.
-Alex Solla
Vince Pitelka wrote:
> First, you need to find out for sure if the problem is in the motor.
> Take the belt off the motor and run it. Is the loud hum and vibration
> still there?
> If not, it is the belt or the wheelhead bearings.
David -
You give great advice, but this is a little more complicated. A motor with
bad bearings will often run very smoothly under no load, especially if it is
mounted vertically. We had that happen with our Venco pugmill. Without a
load, in the electric motor shop, the motor ran smooth as can be. Under
load, the armature was actually scraping against the field magnets. In this
case, if the motor is going bad, it may specifically be the side thrust of
the belt tension that is causing it to misbehave.
For the person who posted the original message, I think the best diagnosis
in this case requires a stethoscope, or in lieu of that, a piece of 1/2"
wood dowel. With the wheel running under load, press the dowel against the
base of the motor, and the other end against the outer flap of your ear
opening. Try it at the base of the wheelhead flange. You should be able to
hear the offending parts very clearly, allowing you to isolate the problem
to the motor or the wheelhead bearings.
If the noise does not seem to originate primarily from either of those
locations, the problem is probably in the belt, and it should show up when
you remove the belt and examine it. A belt that causes excessive noise
and/or vibration is usually work-hardened and checked or cracked. That
should be obvious under close examination. The belt should bend backwards
without any cracks or checks showing up on the inner surface.
Best wishes -
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Office - wpitelka@tntech.edu
615/597-6801 x111, FAX 615/597-6803
http://iweb.tntech.edu/wpitelka/
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Vince Pitelka on mon 26 may 03
> Was looking through one of my woodworking mags yesterday and wondering if
one of these linked belts designed for tablesaws could be used as a
replacement belt on a wheel? Has anyone tried this? My thought was to get
one for my tablesaw, and grab a second for my wheel.
Alex -
Those adjustable link-belts are only for standard V-groove pulleys. Most of
the electric wheels I am familiar with use a flat belt with multiple small
grooves, and thus the link-belts wouldn't work.
Best wishes -
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Office - wpitelka@tntech.edu
615/597-6801 x111, FAX 615/597-6803
http://iweb.tntech.edu/wpitelka/
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