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Unread 13-05-2014, 01:51
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Mechanical Engineer
AKA: Craig Boezwinkle
FRC #2811 (StormBots)
Team Role: Mentor
 
Join Date: Oct 2008
Rookie Year: 2009
Location: Chicago, IL
Posts: 217
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Re: Ball Shifter Force Requirements

Quote:
Originally Posted by T^2 View Post
We observed (anecdotally) that at our true top speed of 17.1ft/s (tested under 60fps camera) with a 3-CIM ballshifter, we had trouble shifting at less than 50-55psi. Our robot weight was about 135lbs; feel free to do the rest of the math.
This is great info. Not encouraging, since I was hoping the cylinders had a lot more safety factor, but good to know.

F = P x A, so that works out to about 25 lbs-f. Anyone else have data to support this?