So, I ran 13/54 on 3s. It's really to much for the ESC. I had temps get up to around 150, with an ambient of 40, so issues were only a warm up away. But before I geared down, I tried to test the speed today, it wouldn't let me hit full throttle . http://www.youtube.com/watch?v=6pzwnOfRV5A Before sending a broken wheel flying anyway.