It will be interesting to see how mine works out. I will be running 10S so my current draw should stay below 40A. I wish I had purchased a 1907 instead of this 1912. I'm 90% certain 1912 will be way overkill, and a 1907 is 100g lighter (and cheaper of course).

My biggest concern so far is my gearing setup and the fact that these Neu 1900s cog quite heavily. The cogging might be a bad thing for coasting and I suspect might cause startup issues.