|Andrew Tinsley||04/10/2019 16:23:07|
|942 forum posts|
I have read, or been told that if one uses a toothed belt for the final drive to the lathe mandrel, then you are likely to get a "pattern" on the turned surface. Is this fact or fable?
|Michael Gilligan||04/10/2019 17:21:44|
14648 forum posts
... But seriously: There are many variations on the ‘toothed belt’ and some are smoother-running than others.
|Tim Stevens||04/10/2019 17:26:58|
1122 forum posts
My guess is this:
Properly used - in line with the design criteria - there is less likelihood of patterning than with a gear drive, or a chain drive. Or even, perhaps, from an electric drive driven by AC.
But if the very thought gives you the shivers, why not a poly-V belt drive? No thicker than a toothed belt, and lots of torque capability.
|vintage engineer||04/10/2019 17:40:06|
215 forum posts
Use two with offset pulleys!
|5036 forum posts|
Only if you have a lathe with a single-phase motor and/or damaged bearings! Single phase motors vibrate much more than any other, and a springy belt would help hide the defect. But if a plain belt is slack enough to absorb single phase vibration, it can't deliver power consistently to the cutter. That's another way of creating an unwanted pattern.
With all the fuss about levelling and Rollies Dad, I'm surprised more interest isn't taken in stopping lathes from vibrating.
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