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Unread 13-01-2012, 08:18
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AKA: Patrick Freivald
FRC #1551 (The Grapes of Wrath)
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Re: FRC 2012 Ball Launcher by iR3

Quote:
Originally Posted by Dan Richardson View Post
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?
Thanks! We did the math on a half-court shot and the surface speed of a 6" wheel is in that order.
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