Well, you need to gear appropriately for your motor & wheels too.
I originally built this as a racer with a .32 engine, then converted it years later.
So, it was already sporting the FOC kit with a gear flip which increases speed. I have also changed the bevel gears to the higher ratio for more speed since being converted.
I'm using a motor much bigger than yours because I wanted the torque to be able to gear up for insane speeds. Last clocked chasing with a car at 100km/h at 3/4 throttle (still to try the 34T pinion on the freeway). My motor gets to about 65-70 degrees Celsius, not sure of Fahrenheit, after a full pack doing WOT runs. ESC has a fan & it rarely turns on. Unless it's a 30+ degree day.
If I gear down it will flip constantly, but, this is still a wheelie king!!
Another thing, I soon discovered that my truck was mostly starting off in 2nd gear anyway as the torque produced was overriding the two-speed clutches instantly!
This next video is running my original setup (See pic) which was a +4 over stock on metal gears which explains the ringing noise in the camera.
http://www.youtube.com/watch?v=gmbs_-iFO9A