Castle 2200 on 4s or 6s

[hemiblas]

On my 2 pole feigao 7xl the timing is worth 1.5mph in each direction. I have gps'd it. At lowest timing I'm 37.5-38mph, next timing 39-39.5 and the next up was around 40.5-41mph. I havent tried highest timing yet but I have heard 2 pole motors are most efficient at the highest timing.

I will be running the 2200 on 4s as I have too much money invested in 2S packs. I've just decided that 45mph is fast enough for an MT. I cant wait for this motor to come out. My 7xl is insanely fast. If everything I have been reading is true then this motor puts it to shame.