Thread: Can we really get 225 in-lbs from the drills?
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Unread 23-06-2002, 22:48
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#0047 (ChiefDelphi)
  
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Re: Can we really get 225 in-lbs from the drills?
Posted by Raul at 1/12/2001 1:58 PM EST


Engineer on team #111, Wildstang, from Rolling Meadows & Wheeling HS and Motorola.


In Reply to: Can we really get 225 in-lbs from the drills?
Posted by Jason Rukes on 1/12/2001 1:53 PM EST:



The breaker does not really trip at 30A. I do not know the specs but it will typically allow quite a bit more current for a certain amount of time.

Raul

: One of Woody's slides during the Kick-Off showed that a current-limited motor will have the same max speed, but less torque than a "current-unlimited" motor. That got me thinking about the drill motors and the effect of the 30A circuit breaker.

: The datasheet states the drill motor will stall at 225 in-lbs(low speed). The torque constant is 5.836mN-m/Amp which means the motor can only generate 62in-lbs of torque at 30 amps before tripping the breaker.

: Does this sound correct?


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