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)
  
Join Date: May 2001
Location: Pontiac, MI
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you get all that and more
Posted by Joe Johnson at 1/12/2001 3:14 PM EST


Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.


In Reply to: Re: Can we really get 225 in-lbs from the drills?
Posted by Raul on 1/12/2001 1:58 PM EST:



My experience is that you get all that and more.

The motor is a .6N-m motor. In low, you have a 64:1 ratio. .85-.90 per stage and 3 stages, the effective stall torque is between (low est) .6*64*.85*.85*.85 = 23 N-m or 210 in-lbs and (high est) .6*64*.9*.9*.9 = 28 N-m or 250 in-lbs.

From playing with the transmissions over the years, I estimate that it is closer to the second than the first.

Joe J.

P.S. The breaker does trip but not for a while.


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