bl motor set up info

[steveo]

ok guys help me out, i run a c-50 hacker on 12 cells, i do very well against the gas trucks at the local track, but now the track is longer, and the motor and speedo is hot at the end of the race, , i would like a lower temp on the motor and speedo, how can i acheive this, and can i do it with 12 cell and carry same speed with proper gearing, or is more cells needed with xl or l series motors , more run time would be nice to.

thanks