I really only have one question right now, would using the stock gear box be a bad idea?
It has a 4.1 gear reduction so you should only have to spin the input gear about 15k rpm to get the max rpm out of the impeller wheel. The only issue I would see is a motor with enough torque at 15k rpm to spin the gears.
It has a 4.1 gear reduction so you should only have to spin the input gear about 15k rpm to get the max rpm out of the impeller wheel. The only issue I would see is a motor with enough torque at 15k rpm to spin the gears.