[hemiblas]

My feigao 7xl setup that smoked my MMM is now running strong with an MM and external BEC. I dont think the motor efficiency has anything to do with it. You cant gear them much above 38mph on a stock emaxx or they heat up too much. MM does fine its the motor to worry about. If the new Castle motors are really that much more efficient than my feigao running it with an MM might just be the way to go. It still amazes me everytime I hit the throttle how well the MM handles the current and just lights the tires right up. The crazy part of all this is that the current spikes are less on this setup than on my 7700 combo in my stampede.