OK-Bob and Nikos. I downloaded the new firmware and disabled the motor temp cutoff. I couldn't get a 14t pinion so I tried a 15 and a 13. First the 15 pinion was at 165 deg at 3 mins and 190 deg at 6 mins. I stopped there. The 13 pinion was at 145 at 3 mins 170 at 6 mins and 199 at 10 mins. Not good. Finally a friend of mine gave me a heatsink to try. Same set up as before with the 13t pinion we ran it for about 14 mins and never got above 145 on the motor and 80 on the esc. The motor still feels weak on the bottom and doesn't have enough top but at least it will finish a race. I can probably get more out of it but then I'm playing the temp game again and it will still not be able to keep up with the 4 pole motors. Thanks for your help!