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Unread 09-12-2012, 02:33
Brandon_L Brandon_L is offline
Back @ it again with the white vans
AKA: Brandon Liatys
FRC #2180 (Zero Gravity)
Team Role: Mentor
 
Join Date: Jan 2008
Rookie Year: 2007
Location: Newark, NJ
Posts: 1,207
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Re: Balancing an Arm

Quote:
Originally Posted by gabrielau23 View Post
Thanks for posting this here, Brandon! Our team had the same problem in 2011. Arm was pretty bad and required really heavy springs to balance, which just killed our weight budget.
So from what I've picked up so far, you can either use a super-powerful motor or use surgical tubing to balance said arm, correct? If using surgical tubing, would the tubing be attached to the arm both below and above the arm?
From what I've picked up, basically yes.

If I were able to go back and play logomotion again, I think I'd balance my arm with surgical tubing (and a lighter manipulator wouldn't hurt) and use a window motor (possibly with torque limiter) to avoid the motor stalling issue. You'd have to gear down its speed a bit though.

If it were a heavier game piece ('08) I'd probably use gas springs instead.

This thread turned out to be very informative, thanks to everyone who threw their $0.02 in
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FRC 2495 - Hamilton West Robotics [2007-2014] - whats a..."hive mind"?
FRC 3929 - Atomic Dragons [2012-2013]
FRC 2180 - Zero Gravity [2017-]

Just trying to collect all the possible team colors