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Old 01-28-2012, 08:13 PM   #75 (permalink)
TheEnemy
The road not so traveled
 
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Join Date: Jan 2010
Location: New Mexico
Posts: 680

The Truck - '99 Nissan Frontier xe
90 day: 25.74 mpg (US)

The Ugly Duck - '84 Jeep CJ7 Rock crawler
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Quote:
Originally Posted by Old Mechanic View Post
Va Tech calculated my in wheel drive produced 380 pounds feet of torque at 0 RPM.

Per wheel at 99% efficiency at 0 RPM. Your motor can't touch that or regenerate any significant amount of energy.

regards
Mech
380ftlbs at 0 RPM = 0% efficiency, and without proper current limiting capabilities you are going to burn up your motor/controller/batteries/wiring.

My T-case is already dealing with over 700ftlbs on the input shaft and once I put the new transmission in it with a 6+:0 first gear it will have over 1300ftlbs at the input. There are others putting 2-3000ftlbs through the same gearbox without problems.

Edit to add: There are quite a few off roaders that are interested in the idea of an electric conversion because of the low RPM torque they put out.