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Dore Westbury Milling Machine

Drive Belt......help required!

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Adrian Dixon27/06/2011 22:25:28
6 forum posts
I am having problems with the drive belt on a MkII D/W (i.e. with belt guard). The supplied round fabric reinforced belt is a shade too long (possibly stratched slightly over time) and I cannot get sufficient tension before the motor pulleys move too far back and foul the guard.
I am currenlty using 6mm green round belting but it is limited how much tension / loading the welded joint will take before it fails - I know I've done it! I have reduced the tension to the point that the joint survives but this limits the cut before slippage occurs (and the motor then gradually gets a covering of green dust off the belt!).
Does anyone have a solution, preferably know a supplier of a shorter 1/4" dia round fabric type belt?
Adrian
DMB28/06/2011 09:34:02
1585 forum posts
1 photos
Hi Adrian,
Watch out for that green dust. Even if its not carcinogenic, it will still do you no good to breath it, or ANY other dust. Use a mask, including when you`ve finished and sweeping up.
John.
Ian S C29/06/2011 12:24:18
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7468 forum posts
230 photos
Sounds to me that 1/4" is too small a size for even the smallest mill, I use the 1/4" stuff on my Super Adept with a 180 watt motor. You should'nt have that sort of slip, and you'll get it what ever sort of belt I imagine. Are the pullies a U section or a V? Ian S C
,29/06/2011 19:41:07
41 forum posts
1 photos
Hi Adrian,
Try Tony Griffiths in Buxton (lathes.co.uk). He does a huge range of sizes of round belting in both leather and plastic and is almost certain to be able to help you
Phil
Bogstandard29/06/2011 21:14:30
263 forum posts
 
 
Bogs


Edited By Bogstandard on 29/06/2011 21:17:04

Adrian Dixon29/06/2011 22:33:07
6 forum posts
Thanks for the responses. Yes it is 1/4" to transmit 1/3HP if I recall correctly. The existing belt is to most intents 'unbreakable' and one thought is to fit a jockey pulley to lose some length, but it would have to be supported off the bottom plate of the belt guard (an alloy casting) and would still potentially leave a problem in future when (if?) the belt ultimately fails.
I am currently using 6mm green belt bought at Harrogate last year, I think it is Swiss made. It runs in semi-circular grooved pulleys but the weak point seems to be the heat welded join, though I have managed to get a satisfactory result that has lasted several months now providing I don't try and take more than a light cut. It is a light machine but is capable of more than I dare subject the belt too.
The hollow belt with fasteners is an option but will the join cause noise and vibration? The smallest pulleys are quite small, maybe 1.5" - leather with fasteners is not preferred for the same reason.
I have seen it stated that the original belts were by a firm called Dawsons and that they no longer have the moulds. Re-machining to suit Poly-V belt (say only 3 wide) may be an option. Anybody tried that route?
Adrian
Chris Trice29/06/2011 23:38:56
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1376 forum posts
10 photos
Wasn't the Dore Westbury a kit? I had a Mk 1 (bought secondhand finished) and remember the belting being standard V belt.
Chris Trice29/06/2011 23:41:58
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1376 forum posts
10 photos
I use these people a lot for belts and bearings.

http://www.fiveways-bearings.co.uk/
Redpiperbob30/06/2011 06:21:25
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92 forum posts
41 photos
Hi All My Dore Westbury kit had a round fabric type belt never stretched in all the time I had the mill. Model Engineer Services was the company I bought mine from. But I believe Ivan Law the owner has retired.
Bob
 
Andyf01/07/2011 08:43:12
392 forum posts
Posted by Chris Trice on 29/06/2011 23:38:56:
Wasn't the Dore Westbury a kit? I had a Mk 1 (bought secondhand finished) and remember the belting being standard V belt.
 
I have a Mk I and use a car fan belt on its 3-step pulleys. But I think the Mk II pulleys are 5-step, with narrower grooves to take a round belt. See third pic down here: http://www.lathes.co.uk/dore%20westbury/page2.html
 
Andy
 

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