on 6 and 12 cells the motor don't get soo hot, I think like 90ºF for the 6cells and maybe 130ºF for the 12cells. is not so hot.
yes I know it suppose to go soo fast, with my mini-t mamba 5400 and 3s LiPo I got something like 30-40mph easily but I don't check with my GPS but it gives the impression to.