Quote:
Originally Posted by bobson
The belts are timing belts from old printer/scanner and are inverted (teeth out).
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Hmm.. When I mentioned "teeth out" in one of my previous posts, I meant something else.. When I was playing with the concept, I used a tightly mounted (glued) timing belt on a wheel with teeth out, so that effectively this forms a timing pulley with rubber teeth.
Then, I used larger timing belt of the same pitch, with much smaller timing pulley (from Small parts) on the encoder shaft.
The way you made your assembly, there may be some slippage between pulleys and belt, that could partly explain those small discrepancies you mentioned earlier.