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Unread 17-01-2012, 17:40
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VEX Robotics Engineer
AKA: Arthur Dutra IV; NERD #18
FRC #0148 (Robowranglers)
Team Role: Engineer
 
Join Date: Mar 2005
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Re: Centrifugal Arm Claw

Quote:
Originally Posted by farmersvilleRob View Post
We don't have the funds to prototype and the pneumatic or window motor or regular motor is too heavy. If I use the polycarbonate it might only be slightly lighter, but I think it'll work better than the chain. Anybody know how much urethane friction would help against flying out?
I just ran the numbers* and the 553 oz-in servo you want to use is likely illegal due to rule R48-L (depending on what its maximum rotational speed is, as it will likely have a peak power output over the 4W at 6V limit).

* Assuming max torque is 553 oz-in and the max rotational speed is .21 sec/60 degree (which seems to be the average speed I found when looking up high torque servos in the 400-600 oz-in range at 6V), this results in a peak power output of 4.86 Watts.
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Art Dutra IV
Robotics Engineer, VEX Robotics, Inc., a subsidiary of Innovation First International (IFI)
Robowranglers Team 148 | GUS Robotics Team 228 (Alumni) | Rho Beta Epsilon (Alumni) | @arthurdutra

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