Quote:
Originally Posted by Munchskull
Thank you for all of the information. Would the pure calculation or adding a few thousandth to the distance yeild a drive that would be less likely to snap a belt?
Also I have heard that mixing different belt with htd5 pulleys can result in less failure than just using HTD 5. Is there any merit to that?
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Once you add enough distance, you start to over-tension the belt, and you risk failure that way. Once you remove enough distance, you risk ratcheting.
5 thou or less added seems like it would be fine.
Using GT2 belts with HTD pulleys is slightly stronger than HTD / HTD, but weaker than GT2 / GT2. I don't think you need to do this - if your belt strength is marginal enough for this to make the difference you don't have a big enough safety factor.
Remember, 15mm wide for 24T pulleys in a drivetrain.