crt.5 lipo size and a lot of question

[BrianG]

For the CRT.5, any of the MM motors will get too hot IMO. You'd be better off running an L size motor with a 3s lipo. The maxamps 5Ah 3s pack would work nicely.

Don't know about the X1. But I'd shoot for a XL size motor. And since you're running the MM ESC, you can only go up to 4s lipo, so that somewhat limits your motor choices to something in the 2400 kv range.