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Brokenparts
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Join Date: Oct 2012
10.28.2012, 08:41 PM

Gearing has changed again! Dan is sending me a 31T pinion and I already have a 54T spur on the way. With the jumbo claw dawgs it says I should expect 50mph with 3.8v per cell. If thats too tall, Ill just stick with the stock spur gear.

Whats the general rule on motor temps? battery and esc? I have had brushless setups before but they never got hot, too hot to hold anyways.
   
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_paralyzed_
working on a brushless for my wheelchair.....
 
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10.29.2012, 08:04 AM

Although not always true, a rule of thumb is:
Hot motor, cool controller, cool batteries = undergeared
Cool motor, hot controller, hot batteries = overgeared
Warm motor, warm controller, warm batteries = happy components

Hot, warm, and cool vary as well, so here's another general rule:
Hot for a motor = generally over 160F (71C)
Hot for a controller = generally over 150F (66C)(or "thermal" range for the controller)
Hot for batteries = generally over 150F (66C) for nimh, 130F (54C) for lipo
Warm for a motor = generally 100F (38C) through 150F (66C)
Warm for a controller = generally 100F (38C) through 130F (54C)
Warm for batteries = generally 100F (38C) through 130F (54C) for nimh, ambient temp through 120F (49C) for lipo
Cool for all components = generally ambient temp and up to 10 degrees F (5.6C) more


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It's "Dr. _paralyzed_" actually. Not like with a PhD, but Doctor like in Dr. Pepper.
   
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