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Unread 03-05-2013, 22:50
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Tristan Lall Tristan Lall is offline
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FRC #0188 (Woburn Robotics)
 
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Re: designing a three motor gearbox

Quote:
Originally Posted by pmangels17 View Post
Designing for two CIMs and a miniCIM is the same as designing for three CIMs, they have the exact same mounting style.
Quote:
Originally Posted by 1683cadder View Post
Shouldn't the minicim be different than regular com? I thought they had significantly different rpm
To a first approximation, you can substitute one for the other, but if building a gearbox, you'll probably want to consider whether interchangeability or optimizing the operating state is more important. For most FRC applications, I'd lean towards running all the motors at the same points on the power curves (but because they're different motors, the magnitudes will be different). That means slightly different gear ratios, with less interchangeability between CIMs and Mini CIMS.