i've seen the novak ballistic motors in action and they have great power and run cool. i've seen a 8.5 (5000kv) temp at 95F after a 45min run in a slash.
They say a good mechanic only needs 2 tools - WD40 & Duct tape. If it moves, and its not supposed to, duct tape. If it doesn't move, and its supposed to, WD40.