Quote:
Originally Posted by RMS11
We didnt think we needed a tensioner. We can tension by hand and there should be about 180 degrees of contact i think...
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I'm not sure what you mean by tension by hand. Do you mean try to stretch the train onto the sprockets? that won't work.
you could do *exact* center to center distances, but that would be difficult with all the different parts, and once the chain stretches it wouldn't work.
Really, you should be a tensioner in there, and position it so you get more wrap on the globe motor. Also, the globe motor output shaft should be supported.
As for the replies to the thread, he's designing crab drive, he already decided that. Help him with that, or don't reply.