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Unread 08-01-2015, 12:38
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AKA: Gus Michel II
FRC #3946 (Tiger Robotics)
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Re: Elevator counterweight / constant spring and ability to lift different number of

Quote:
Originally Posted by Jon Stratis View Post
Instead of trying to counterbalance, think instead of applying a friction brake of some sort. Try thinking about how you brake a bicycle tire, and see if you can do something like that with your spool that lifts the elevator. Pneumatic would be a great way to generate that braking force without burning out a motor!
We opted for the KOP drive system, but we're equipping it with holonomic wheels, so we are considering "recycling" the 4" rubber tires as brakes. We'd build a clamp that fits around the wheel, probably with a brake lining of carpet, and open and close it pneumatically. Not sure how often we'd have to change the carpet - my guess is after a about 12-24 hours of practice, and between tournaments.