Pretty constant RPM! Can a castle do it?
no there is normally no problem for a esc to give power to motor,it is when u come out of something and it will over rev a bit
difference between castle and kontronik is not only the price like some people like to think
when i talked to fredrik this flight is a normal flight like he always fly and hold rpm 25% better then with a pyro
cost of flight time for sure, nothing is for free but not as bad as u think if u not abuse .
if extream pitch pumping it will take some serious amps