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Unread 18-01-2012, 21:13
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Kenyow
FRC #3620 (Average Joes)
Team Role: Engineer
 
Join Date: Jan 2012
Rookie Year: 2011
Location: St. Joseph MI
Posts: 6
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Re: Ideal compression for flywheel?

As promised, here are the results of the tests on ball compression. And how to use them. I took a pressure plate and placed the ball on top, and rigged a system where i could lower a surface in half inch increments and measure the force on the ball. Here is what i got. I would encourage other teams to try it out for themselves.

0.0in 0.0 N
0.5in 22.3 N
1.0in 45.8 N
1.5in 66.5 N
2.0in 90.4 N
2.5in 112.6 N
3.0in 127.6 N

If you want to know the torque needed on the motor, use this formula:

Torque = Force of compression X Radius of the shooter wheel X The compressed coefficient of friction between the ball and the shooter.

Hope this helps

Last edited by Kenyow : 19-01-2012 at 17:25.