[lutach]

How is the timing on the MM? A 6 pole motor likes high timing to work efficiently. I had my Mega ACn22/30/2 in my MBX5T and with 14/48 it was running very good. I changed pinion to a 15 to test out a new ESC and the Mega was very hot, but after 7 minutes of hard running. I now have a FUN600-17, with the same 15/48 gearing and it gets very hot in about 2 minutes. The Mega is a power house and in a light vehicle you can get away with higher tooth count on your Rustler. In a heavier vehicle like mine, the proper gearing is recommended. A good tool to get is a data logger from Eagle Tree or BNB Products to see just how many AMPs your set up is giving you. Most of the time is just trial and error.