Motor frying

[ashleyb4]

Hi

at dudley this weekend i was frying motors evety race they where coming off really really hot i started with a 19t which gotreally hoti started with a 23 on a white spur and came of really really then i wnt to a 24 and that came of slightly cooler but still to hot. Then i went to a 25 and was even hotter again. So i went back to the 24 for round 4 with a new hole in the shell for cooling. This also got hot but i only ran for a few minutes as i was getting interferance. So i thought it maight have been my motor just not powerfull enough so i changed it to my 14 V2 and i was doing well insane amounts of speed i was in third place chasing the 2nd place man when the motor came unsoldered cus of the heat i was runing this on a 23t pinion and a white spur. What the hell is wrong why is it getting so hot.

A