Bell Balancing on an OutRunner motor - RC Groups
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Jun 24, 2010, 03:37 PM
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Bell Balancing on an OutRunner motor

Can someone tell me the best way to balance the bell of an OutRunner, I have not had any luck doing it.
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Jun 26, 2010, 09:22 AM
jackerbes's Avatar
You might try getting it on a shaft that extends a ways from both ends and then using a magnetic prop balancer on it. Another way would be to rests the shaft ends on two parallel knife blades set an appropriate distance apart.

Rolling the magnet housing in the balancer will let you see if the shaft housing and outer shell are parallel or not, I wouldn't try to use the magnet housing unless the shaft and magnet housing are concentric.

When it is resting on the knife edges the heavy side will go to the bottom, add small amounts of epoxy or JB MetalWeld, or maybe another two part epoxy to an open area (like the interstices between the magnets) on the light side to correct the balance. As long as the adhesive is kept even with or below the tops of the magnets is should be OK.

I have two Torque T4014-570 motors and have noticed that the interstices between the magnet are not fully filled with adhesive, some have more than others. I assumed that might have been the result of some balancing during manufacture. I've never had any out of balance issued with them.

Jun 26, 2010, 01:03 PM
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flydiver's Avatar
Is this the towerpro motor?
Jun 26, 2010, 02:30 PM
jackerbes's Avatar
Originally Posted by flydiver
Is this the towerpro motor?
I thought I saw a question that was in regard to the Torque Revolution T5014-570 motor but I don't see any specific motor mentioned now. This is the motor I was talking about in it's present version (the T5014-570 became the T5016-500):


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