540C motors, always hot?

[cart213]

Yeah, it's all about the rpm/V. With your 8 cells, the 9L was only running at 26,000 rpm unloaded. The 9S will do 37,000 rpm with the same number of cells, so it will be much faster.

Of course, if you crammed four more cells on there like me, you'd be hitting 39,000 rpm unloaded with the 9L and going about 50mph without overheating. :p