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Unread 10-01-2011, 23:16
Unsung FIRST Hero
JVN JVN is offline
@JohnVNeun
AKA: John Vielkind-Neun
FRC #0148 (Robowranglers)
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 2000
Location: Greenville, Tx
Posts: 3,159
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Re: Don Don Don

Quote:
Originally Posted by Bruceb View Post
Don Don Don... I have the motor curves and I have the JVN design calculator.
I know the free speed is 5500 rpm. I am not an engineer. I don't know how to figure what I can realistically expect the CIMs to be turning at at nominal load at speed. Sorry, my calculus is nonexistent, I never had physics and I am just trying to help some kids build a robot. Now, if you are willing to help, great.
Bruce
If you're geared "reasonably" and your drivetrain doesn't have some ridiculous friction load (or is a Mecanum), the CIMs will run at about 81% of their free speed when at top speed.

Reasonably geared is defined for a drive 4 motors to be "less than 13 fps @ free speed."

-John
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