yes we will.the KD has less wire on the arm than the C2 and also less than the hemi wound chameleon from what i have been told.the magnets on the orion are strong but the KD are when they are new.when the magnets fade on the KD,thats when the motor falls off.every KD i have has dropped in RPM after the magnets dropped off as did the tourqe.i will check on the actual weight difference between the arms but the KD arm is alot lighter than the orion which is the reason for the high rpm and less tourqe.tall gearing does not always mean faster motor.the KD is very difficult to hit gearing on but when you do it is insane.just remember when we were checking motors at joes.23500 RPM is weak compared to what i am getting out of em now.i have 3 doing 27000-29000.you dont want none of this sucka.