I'm running a mm in my crt.5. Using a Medusa 36-50-4800 on 2S geared for about 38MPH. In nearly 90 degree temps I'm getting temps of about 150-155 on the esc, 120-125 on the motor and about 110-115 on the lipo after full out speed runs. I love the programability of the mm and this little truggy is a blast.