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Hi,
I'm building a three wheeled "thing" and powering it with a 350W 24V (brushed) scooter motor. For this build, it would be extremely helpful if I could run the motor in reverse all the time-- just cross polarity and have done with it. My question is, are these little brush motors forward biased in some way? Are they more efficient in the intended FWD direction than they are in reverse? I suppose I could test the forward vs. reverse stall torque myself to see if there is a difference. But is torque a good enough indicator of inline efficiency?

Thanks for any "direction" you can give me!

Cheers,
--Max
 

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I think the brushes are neutral on those Unite Motors and they dont
mind if you run them reverse polarity.
I just got a new 36v 350W one for my bicycle. Im running it clockwise but I dismantled it after its first 20km and found the brushes were running half a millimeter off the end of the commutator ??!!
So I had to machine a new circlip groove in the brush end of the rotor
shaft so that it would move over 2mm. The com now sits under the brushes properly. Also drilled a bunch of holes in the aluminium end plates for cooling.
Made in China, Repaired in Australia.

 
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