I was hoping someone might shed some light on this subject... I am currently running my Durga for off-road club racing. I'm starting with the Rookie class since I am new to RC racing.
I have spend a couple weeks gathering the math to calculate gear ratio's, rollout, estimated MPH etc. All these numbers help to determine possible pinion choices and expected changes to your car when you swap out a motor, tires, etc - which is all great!
The one thing I have had trouble finding is the expected temperature tolerances for brushed and brushless motors.
Most have said that you want to keep your motor below 160F after a 5min run and never exceed 175F (both brushed and brushless).
I ran a new Trinity 27Turn with a 19T pinion last night... After 5min the motor temperature was pretty spot on at 155F (ESC was at 140F). I let it cool and put it through a longer 12min run and tested again - The motor was 178F and the ESC was 156F...
I also tried running a higher tooth pinion and as predicted it ramped up the temps after 5min runs so I backed down to the 19T since it appears to be safer overall.
Can anyone confirm if these temps are normal for a brushed motor? I cut the vents in the body (protected it with fly screen) for added airflow, but have not made the 'hot weather' cut in the rear since I am still running slow motors. Thanks.
Dan