RE: [CAD_CAM_EDM_DRO] Re: Treadmill motors as Servos

If you can get a belt in narrow form that will do, you can double up belts
side by side. Obviously if the belts long the two abraid each other as they
bounce together.
One automotive manufacture was experimenting with twin timing belts, on
break you get a hell of a lot of noise, by the cam still turns.
We have also used twin belts on big superchargers, again because we couldn't
get anything else at short notice, but I think they stayed on the car for
several months before we put a single belt on.

Regs Mark

-----Original Message-----
From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Wayne Weedon
Sent: 12 November 2006 23:56
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Re: Treadmill motors as Servos

Mark Vaughan wrote:

> Hi Wayne
>
> My 10 meters of 10mm wide 5mm tooth pitch belt is usually about £50 if
> that’s any guide
>

Mark..

The belts only cost a couple of quid each. (220XL) It was the pulleys
that cost ;) All the stuff upto half inch is quite easy to get off the
shelf. These 3/4" pulleys were not held as stock.

Even then they were only blanks and I had a fair bit of work to do to
them, broaching keyways etc.

My problem, was than I had to change ratio( 1.87:1 > 2.5:1), but still
maintain exactly the same centre distance. Also using the same width
belt as Hardinge did.

Wayne...

--
---------------------------------------------------------------------------
Wayne M Weedon Email: wayne@...
Fdos Design Poole UK
Tel +44-1202-677025 Fax +44-1202-770515 Mobile: 07774 439915

Specialists in small batch & Production Mechanical/Electrical Engineering
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