I wonder if TX circut board would be able to run B5685M-S04 without any major modifications.
If it did, it would make the most powerfull TX on the market ~ 80W motor
http://www.alibaba.com/product-detail/B5685M-brushless-dc-motor_1264324613.html
Anyone still in contact with Andrew?
Update:
Quick update for anyone interested, T300RS works quite well with increased voltages!