You should not need a 150 amp ESC for that motor
70 - 80 amp range should be plenty, 120 would be overkill
I would look at upgrading your battery to a lipo for better motor performance
The motor determines how many amps are drawn from your battery, the ESC simply provides a path
Cheers
Last edited by crusey_aus; 11-30-2011 at 05:05 AM.