Quote:
Originally Posted by magnets
I'm designing a gearbox that would work really nicely if a gear with an OD of 1.700 had an OD that was .020 less. How bad would it be to to turn down the OD of the gear .020? Also, does anybody know exactly the OD of a CIM motor? The website claims 2.54 max, but do they come in under this?
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By the way, what are the dimensions and diametral pitch of this gear? It's kind of important to know how much of the tooth is being lost. But maybe that's part of the solution: you could go with the largest teeth that will work. In most cases, the limit will be set by the undercut of teeth on the pinion as you go down to small diameters. (To improve that, prefer a higher pressure angle given gears of a certain diameter and the same pitch.)