David, I am going to run a neu 1515 1/y on 4s in my savage with the 3 speed. Mine should weigh about 12lbs at a guess. I pretty sure that the 1515 1/y will stay cool, geared for 60mph in my revo(only radar-ed in at 55mph) it never got over 130*f, cant say the same for the batteries though!

My chassis should be here tomorrow, I cant wait!!!!!!

Bye