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Unread 13-01-2012, 00:12
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Re: FRC 2012 Ball Launcher by iR3

Quote:
Originally Posted by pfreivald View Post
Could you give us an indication of what kind of rpm you were spinning those wheels at for the various ranges?
We are actually doing our best to track down a tachometer but theoretically CIM motors free speed around ~5310 rpm.

We currently have it configured as a 1 stage reduction 14 CIM Gear to 40 Tooth Gear. So a gear reduction of roughly 2.85:1.

5310/2.85 = 1863.15 RPM

Taking into account the mass moment of the wheels and some inefficiencies maybe like 1400 rpm @ around 75% efficiency?
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