What am I doing wrong

[starscream]

Originally Posted by brushlessboy16

I just got done racing my 8ight (3rd in the a-main by the way) and im having a really bad heating problem


Started off the day running the 2200kv setup, 16t pinion geared for 45mph.. after a 5 minute heat the motor was about 150 F.. I didn't have another pinion I could put on so I ended up throwing a 1515 2d in the car (2050kv) and ran the car, ran the second heat fine, didnt bother to check temps, then i ran the main, starting off with my rc-monster 2s packs that bit the dust... had to do a battery swap to my Smc 4100mah packs about 7 minutes into the 10 minute main, then continued to run the race.


Car ran flawless- great power, acted like all was well.

Then come to find out as a I drove up pit lane to pull the car off I happed to check temps. The motor was at 180 degrees, batteries were at 105 or so and speed controller was 100 even.

Am I geared too high? I know people are running 1512's in buggies that run cooler.

Unfortunately, emaxxnitro is incorrect on this one.
The faster a motor spins the more heat is generated.
So, a smaller pinion will only heat the motor up even more as the motor will spin even faster causing more heat.

My recommendation to reduce motor heat is to set the ESC timming to 0 and the ESC punch control to 50% or more

Not necesarily starscream. In both my revo and slash, reducing pinion size reduces temp. It is easier for the motor to push a car around if the gearing is lower (lower temps), unfortunatley that comes at a cost; speed. The motor will ALWAYS spin at the same speed with it's correlating throttle position, no matter what the gearing. If you increase pinion size, it is harder for the motor to move a car (more heat) but you get higher speeds.