Wouldnt be suprised... wind resistance has a massive effect on continuous current draw.. all the air inside the beater will be wofting around causing a massive amount of drag.

The spinning OD has a large effect on spinup current aswell.. my drum is only 95mm tip to tip and the gear ratio is 3:1... quite high considering the OD of the weapon.

I spent more time deciding on weapon motor/ratio/drum weight when designing 720 than anything else and its worked out really well... the castle motor only gets what id consider luke warm after 3min of abuse, and now its combat hardened i wont be changing them.