Hey everyone

I have a mugen MBX6 with the tekno conversion kit, with Tekin RX8 and 2650kv motor, and on 4s Li-Po. This is a wicked fast setup, and we really like it, but when we run it, the motor heats up to about 155-165 degrees Fahrenheit. Our gearing is 13/46(i think 46 is stock on the m-spec?). I am also running a 40mm fan on the motor, and have quite a few holes in the body and one window next to motor. any tips appreciated.

thats actually not a bad place to be for temps. you should be able to go up to about 180 before you will have to start to worry about causing damage in 1/8th scale motors.

really? well, i would like to get the temps below 150... Just to be safe. whats a good way to lower temps further? like put in the mechanical brakes, and disable regular motor brakes? does the mx-sport have channel mixing?

get a motor that is closer to 2000kv..

my 1900kV doesn't get higher than 130 on 4s. I have 15t pinion, 46t spur.

That's not too bad for that motor/battery setup. If you're not running on a really wide open track, try going with a 11T or 12T pinion which should get you down to the 35-39 MPH range. It might reduce temps (but it might not also). It's worth trying if you're trying to reduce temps. You can't really ask for a super cool running motor if you're running 2650KV.

EDIT: I also wanted to add that running mech brakes should reduce temps a bit also and if you're running the Tekno kit, you don't need a radio that has channel mixing. All you need is Y-harness so that you can plug the ESC and brake servo on the same channel. Mechanically, you can configure the brake linkage to apply brakes when the servo pushes instead of when it pulls. When you're pulling the throttle, the brake linkage will move but basically wouldn't be doing anything.

Thanks for the info everyone, will maybe try the mech brakes