Thread: How to do calculations with a 2 CIM, 1 Mini-CIM gearbox?
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Unread 17-11-2014, 09:58
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Re: How to do calculations with a 2 CIM, 1 Mini-CIM gearbox?
Quote:
Originally Posted by Jay O'Donnell View Post
Hi CD,
I've been working on drivetrain designs lately and I've been looking into using a 2 CIM, 1 Mini CIM gearbox. I've been told by people from multiple teams that this is ok to do and that I shouldn't have to change the pinion gear on the mini CIM. Can someone help me figure out things like torque and free speed of a gearbox like that? I don't really know how to find gearbox calculations besides just plugging into JVN Calculator, so I'd like to learn how to calculate it.
Add the torques.

Free speed is given by the formula (T1+T2+T3)/(T1/S1+T2/S2+T3/S3),

where Tn, Sn is the stall torque and free speed of motor "n".