How do you fix the phase shorting problem in Crystalyte H?

[parajared]

I was cruising around the neighborhood and my motor started intermittently jittering every 10 minutes or so (for a second or two). The temp gauge started to rapidly rise from 80 celcius to 110c. Once the motor hit 115c the motor stopped working and all throttle inputs solely resulted in only motor jittering. The motor smelled of smoke (I have a drilled side cover). Just bicycling down the road made the temperature spike too. I seriously had to stop and wait for the motor to cool solely on my efforts to peddle down the road.
I opened the motor cover and found that a bearing had ground down the phase wires and shorted two of them together. I soldered on new phase wires added a piece of plastic as a barrier to the wires, put everything back together again and everything was working great for about 30 seconds. The motor stopped spinning and went back to just jittering with throttle input. No visible smoke, but definitely smelled burnt again, I didn’t have the temp gauge hooked up this time but I presume the motor overheated.

My question is how do you fix the phase wire short problem common in Crystalyte H series motors. It appears there is more to fixing the motor after you have a short than just putting on new wires.

 

[hydro-one]

Buy a new motor. Welcome to crystalyte. Because of the partial short your motor was very unefficent and probably burnt a winding.

 

[dogman dan]

Sounds to me like you melted er down. Not exclusive to clyte though, just what happens when you hit motors with more power than they are designed for.

The bearing might have melted your wires, but to grind through it would have to have stopped working as a bearing and become a bushing.

Might be fixable, but not if the windings have had the varnish melted off enough. Sure your controller is OK? Shorted phases are hard on them.

 

[parajared]

actually the problem may have been more derpy than I thought. I popped the cover off once again (which is a total pain in the rear on the crystalyte) and when I hooked the phase wires up to the controller again with the cover off it was working fine. I believe that the phase wires may have been touching the side cover after my "repair." I will zip tie those suckers down this time and pop the cover back on and try it again when I get home.

 

[miro13car]

"not exlusive to Cristallite" ????
For sure exclusive to China brand design
You can NOT overheat:
Tidal Force
Eplus
FALCO
motors on those systems.
It is called overheating protection
On those motors electronics will power down or shut down if certain threshold temp detected
On EPLUS motor this threshold is 70C

 

[parajared]

I run my 9c at 110c all the time. From what I hear some fellas on the forum cut off at 140c (doctorbass I think).

Also I insulated and zip tied my phase wires and that didn't fix it. I can get the motor to spin, but just barely touching the spinning wheel with my hand makes it stop and jitter.