Would this work?

[aqwut]

I've ran 8XL on 6S as well on an LST... but it probably doesn't get those the rpm limit when under load....

[lutach]

Originally Posted by JOHNNYMAXXIMA

I have a spare motor and a spare speed controller. The only problem is that the motor is a 18th scale Dynomite C4 9200kv and the controller is a BK 9920.
Over kill on the contoller I know but would it work?

Check this out: http://www.youtube.com/watch?v=6uPXuaiVuk0

[lincpimp]

I run a 15l feigao on 5s lipo and have not had any issues, that is around 30k.

[JOHNNYMAXXIMA]

Originally Posted by What's_nitro?

Yeah that's it. I was gonna say you need to keep the voltage under like 5 volts or it will over-rev the 9920. I believe the limit is 42k. That's a 1S motor!

Well I just tried it on a 1s that I had. Same pulsation. I will try to reprogram it and see if that does anything.

[What's_nitro?]

Could it be interference??? I have no idea from what...

Yeah, I would try reprogramming and see if it helps. Does it "glitch" with any of your other motors?

[JOHNNYMAXXIMA]

Well I reprogrammed it and no dice. I hooked up an old 9L that I have and it worked fine. I guess the little motor doesn't like the big speed control.