Calculating current draw ?

[Andris Golts]

Hi how do i figure out current draw on a b/l set up ? I know hull length + weight motor size and kv and dia and pitch of props i will be using. Where could i find the formula to get some what of an accurate current draw? Regards Andris Golts.

[RaceMechaniX]

There is no such calculator Andris, it's experience. Are you trying to size a motor for the boat or do you already have the motor?