Starting a BB Duster project

I might check a couple of different fans next time I'm on the dyno. I can't see more than a few HP difference between fans. 30 hp doesn't seem believable. That would say that if you put one of those fans on a 30 hp electric motor that it would stall the motor. I doubt that it takes that much power to spin that nylon fan at 6000 rpm. It might require a couple of hp.