Fan on Motor, Speedo or Both?

[maxxdude1234]

Wow, 200*F is pretty toasty. If your motor's at running 165*F that should be fine. Once you've got the heatsink on it that should drop by a good 10*F or so. If you can get any airflow (holes in windshield) over the motor this will help, but it will also add a bit of drag. After a good 20minute run my motor gets upto 175*F, so 165*F shouldn't be a problem.

How hot does your speed control get? It might be worth putting a small fan over the heatsink (you'll want the air blowing onto the heatsink.