brushless 1/5 4wd conversion about to begin! couple questions.

[aqwut]

only other option is to get a lower KV Motor and run 12S....
with the 12T your motor should be same temp or cooler, especially with the same voltage.... I think the 85 Deg. temps made the ESC and Motor temps go up not the gearing.. imagine that day if you had the 15T pinnion, you're esc would be close or higher than 150 Deg. Stay with the 15T if you get a lower KV motor......if the ESC is less than 150 Deg, you should be alright man...