That'll be why you need it- the 2700kv is an amp hog, you shouldnt run it on that much voltage (equal to 5s lipo), 4s at most except for short speed runs
with cool down periods.
http://www.airpowernet.com/twe3/prod...products_id=88
http://www.tamjets.com/original/prod...a9d0aed891f9dc
Huzzar...