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Unread 22-01-2008, 23:05
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Travis Hoffman Travis Hoffman is offline
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FRC #0048 (Delphi E.L.I.T.E.)
Team Role: Engineer
 
Join Date: Sep 2001
Rookie Year: 2001
Location: Warren, Ohio USA
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Re: Andy Mark Super Shifter

Quote:
Originally Posted by Capt. Quirk View Post
Are teams using the shifter transmissions backing off on the power and then shifting or are you shifting under power?
Shifting under power. These are designed for shift on the fly operation.

We also still have the original servos on our Gen 2's. They lasted 6+ events' worth of matches with no problems last year. We overdrove the servos a bit past each of the shift positions to help maintain the dog gear mesh (you command the servo to keep going to a position a bit past the shift point but it can never make it there because of the mechanical interference of the gears, so there's always a bit of error-correcting holding force applied in the direction of the shift), but we didn't peg the servos to their limits. You will find you'll have to experiment and dial in your servo shift positions to obtain the best, most repeatable performance.
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Travis Hoffman, Enginerd, FRC Team 48 Delphi E.L.I.T.E.
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Last edited by Travis Hoffman : 22-01-2008 at 23:08.