Wow, serious track. I've only had my 1515/1y for one practice and one race weekend. That weekend on a very small and easy track it was drinking about 1800mAh from my 4900 packs to complete a 5 minute race. Not bad considering the motor I replaced was doing the same thing in 2600mAh plus it was WAY faster.

How are you gearing it? I've got mine pegged at 38.75/36.8 according to BG's speedcalc. On the track it feels much faster than the numbers sound. Even at Wolcott, which is a huge track (like yours) it was plenty fast with plenty of go to clear the biggest Quadruple jump I've ever hit.