# Drive belt Questions ?

Posted by BodgeIt
 Drive belt Questions ? January 03, 2009 10:49AM Registered: 15 years ago Posts: 478
I received the drive belt from the RRRF; I though it was odd as all the pictures show white belt this belt is black. So before making the gears using CAPA, as described by Joost van de Wiel in his post July 03, 2007 06:47AM.

I did a few calculations based on the XML Belt that seems to have 2.032 pitch not 2.5mm pitch thus:-

50-(0.64 * 2) * 3.14159265/ 2.032 = 75.32 (75) teeth.

14-(0.64 * 2) * 3.14159265 / 2.032 = 19.65 (20) teeth.

The original post by Joost did not indicate which belt was used.

Questions

Has any one else used the RRRF belt?
What was the diameter / number of teeth for each gear used?
If as above how can the difference of 0.468 mm per tooth be compensated for?
Was the belt originaly 2.032mm pitch with a recent design change to 2.5mm pitch?

Many thanks

Edited 1 time(s). Last edit at 01/03/2009 10:53AM by BodgeIt.

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 Re: Drive belt Questions ? January 03, 2009 11:26AM Registered: 15 years ago Posts: 478
OOPs excuse the questions the number of teeth is not significant.

Calculations based on 2.5mm pitch
NB the 0.64mm is the depth of belt before the teeth.

50-(0.64 * 2) * 3.14159265/ 2.032 = 61.22 (61) teeth.

14-(0.64 * 2) * 3.14159265 / 2.032 = 15.98 (16) teeth.

Thus one turn is 16 * 2.5mm 40mm the same as 20 teeth at 40mm / 2.032

Back to making CAPA / Polymorph moulds doh...

Bodge It [reprap.org]
=======================================

 BIQ Sanguinololu SD LCD board BIQ Stepcon BIQ Opto Endstop BIQ Heater Block PCB BIQ Extruder Peek clamp replacement BIQ Huxley Seedling BIQ Sanguinololu mounting BIQ standalone Sanguinololu or Ramps mounting Print It Stick It Cut it

My rep strap: [repstrapbertha.blogspot.com]

Buy the bits from B&Q pipestrap [diyrepstrap.blogspot.com]
How to Build a Darwin without any Rep Rap Parts [repstrapdarwin.blogspot.com]
Web Site [www.takeaway3dtech.com]
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