By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Jan 24th

Final drive toothed belts?

All Topics | Latest Posts

Search for:  in Thread Title in  
Andrew Tinsley04/10/2019 16:23:07
1170 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?

Andrew.

Michael Gilligan04/10/2019 17:21:44
avatar
16203 forum posts
706 photos
Posted by Andrew Tinsley on 04/10/2019 16:23:07:

...Is this fact or fable?

Andrew.

.

Probably devil

... But seriously: There are many variations on the ‘toothed belt’ and some are smoother-running than others.

MichaelG.

Tim Stevens04/10/2019 17:26:58
avatar
1259 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.

Cheers, Tim

vintage engineer04/10/2019 17:40:06
avatar
254 forum posts
1 photos

Use two with offset pulleys!

SillyOldDuffer04/10/2019 17:48:45
Moderator
6193 forum posts
1345 photos
Posted by Andrew Tinsley on 04/10/2019 16:23:07:

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?

Andrew.

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.

Dave

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Support Our Partners
ChesterUK
Eccentric July 5 2018
cowells
EngineDIY
emcomachinetools
Warco
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest