Brand new Chameleon Pro, arching.

[scoob]

The title says it all. My brand new Cham pro has excessive brush arching. It gives off loud pops. I ran it in the living room after installing for just a couple minutes noticed the arch and stopped. Both brushes have minor burns on the outside. This motor was dyno tuned and supposedly broken in. What should I do?

[gizmoguy303]

Cut the comm...many comms come out of round right out of the box - even if it's the "pro dyno-tuned" version.

[scoob]

Well I tried breaking the motor in on my ICE charger. I ran it at 3V for 3 min to try and seat the brushes. I was wrong about both brushes being burned. It is only the + side that is arcing, that would mean that the comm is OK right? The brush looks alot better after break in. I'll reinstall it and see what happens. I don't have a lathe.

[RH Customs]

Hmmm, I agree with Gizmo. To me it sounds like the either the comm is out of round or the brushes are worn out. I break in all my motors at 3.6v for 60s and if they are still arching or arching alot it is time to inspect the motor closer. Check the following:

Does the armature spin freely without the brushes in?

Are the brushes still serrated ( almost new condition )?

If the answer is yes the armature spins freely and the brushes have a little serration, then try a softer spring on the negative side, try green. I always cut my motor's when I get a new one, just to make sure the comm is fresh. Although the stock springs should be fine, check to see how the motor is.

RH

[scoob]

Hmmm, I agree with Gizmo. To me it sounds like the either the comm is out of round or the brushes are worn out. I break in all my motors at 3.6v for 60s and if they are still arching or arching alot it is time to inspect the motor closer. Check the following:

Does the armature spin freely without the brushes in?

Are the brushes still serrated ( almost new condition )?

If the answer is yes the armature spins freely and the brushes have a little serration, then try a softer spring on the negative side, try green. I always cut my motor's when I get a new one, just to make sure the comm is fresh. Although the stock springs should be fine, check to see how the motor is.

RH

After break in I swiched the springs around and the arc went away :confused: It has a purple and a green spring. Anyway it runs strong now and the brushes and comm look fine after I put it through a tough run this afternoon so I guess all is well.

Thanks.

[scoob]

Hmmm, I agree with Gizmo. To me it sounds like the either the comm is out of round or the brushes are worn out. I break in all my motors at 3.6v for 60s and if they are still arching or arching alot it is time to inspect the motor closer. Check the following:

Does the armature spin freely without the brushes in?

Are the brushes still serrated ( almost new condition )?

If the answer is yes the armature spins freely and the brushes have a little serration, then try a softer spring on the negative side, try green. I always cut my motor's when I get a new one, just to make sure the comm is fresh. Although the stock springs should be fine, check to see how the motor is.

RH

After break in I swiched the springs around and the arc went away :confused: It has a purple and a green spring. Anyway it runs strong now and the brushes and comm look fine after I put it through a tough run this afternoon so I guess all is well. :)

Thanks.

[RH Customs]

I would go with a green and red spring.