Thread: Dog Gear?
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Unread 29-01-2010, 02:39
RRLedford RRLedford is offline
FTC 3507 Robo Theosis -- FRC 3135
AKA: Dick Ledford
FRC #3135 (Robotic Colonels)
Team Role: Mentor
 
Join Date: Jan 2010
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Re: Dog Gear?

How can this winder scheme pause for storing energy as tension/torque while waiting to take a shot?
After full wind point is reached, can motor just be de-energized? Does the high gear down ratio prevent wind back under the reverse pulling torque/tension of the cable/bungee wrap?
Can motor driver program allow motor to hold a fixed wind up position against full torque of winder at full tension position without it burning out?

Or, is there a freewheel integrated with the dog scheme to first let gearbox shaft disengage from torque load while freewheel still carries this torque, then further dog travel also releases freewheel to spin back at opposite rotation to the windup, delivering stored energy to kicker? In other words, is it a two stage dog release - 1st gearbox is disengaged to take load off motor, and then a freewheel is disengaged to fire off shot (when ready)?

-Dick Ledford

Last edited by RRLedford : 29-01-2010 at 17:24. Reason: clarity