RX8 1700 truggy issues

[itbvolks]

What tire/traction?

[nuz69]

And geared for the same speed, The mamba 2200kV ran a little cooler or hotter than the tekin motor ?
Yes, the play in diffs is very bad, because the shimming is no constant, it eats your diff pinions and it drag the transmission + noise :(
175 °F is ok for the motor, but it is the limit, it means that you dont run it at its max efficiency (efficiency drops a lot with high temps...). You could increase significantly you runtime with a little lower pinion because lower amp draw and longer runtime ==> lower temp ==> best efficiency ==> lower amp draw ect...
Of course it wont give you an additional 10 mins, but it helps !

Upon continuing my work on the diffs, I noticed that the Red motor wire was not soldered well. If you jiggled it attached to the motor mount, it was snug but once I removed the motor you could tell it was not completely secure. I hope this helps also to lowering the temps. While I do agree that 175 is ok, I would rather be in the 140-160 range for my likings and efficiency. When I was running the MMM combo, it was the heat of summer and it ran under 160 all the time. It was extremely fast probably too fast and I really liked the idea of a sensored motor so I switched and ran semi indoors in the winter. And as far as tire/traction there were several other E-truggies running revolvers but I kept going back to bowties for outdoors. On the standard offset rims now, I am running AKA I-beams since they don't make bowties for 2.0 rims. My next tire purchase will probably be AKA City Blocks since I hear so many good things about them. I am going to run tomorrow to see what kind of temps I get and I will post them for you guys tomorrow night. Once again thanks for all the replies. It is people like you that make the hobby less frustrating and keep it alive.

[nuz69]

The sensor bring precision at very very very low speed like 1 mph, above low speed the system switchs on sensorless mode anyway. That's why most of 1:8 brushless system don't use sensor. You probably feel your tekin smoother than the mmv3 2200kV due to the lower kV, not because of the sensor.
The CC/neu 2200kV handle more power than the tekin truggy motors, so it is logic that it ran a little cooler...

[simplechamp]

Originally Posted by simplechamp

Maybe a bad connection or solder joint to one of the phases on the motor?

Originally Posted by Ellwood BL

Upon continuing my work on the diffs, I noticed that the Red motor wire was not soldered well.

We have a winner!!! Those solder joints can be tricky. Sometimes the solder joint feels solid physically but is poorly conductive electrically (cold solder joint, etc.) Glad you got it sorted out.