Starting a BB Duster project

That is a pretty simple call. I don't believe them. That show is for entertainment, nothing else. I'm pretty sure a 5 hp electric motor will spin a nylon fan to 6000 rpm. If a 5 hp electric motor can spin it then how could it require 30 hp? The guys on engine masters either didn't double check their results or the messed up the test somehow.

Or think about a lawn mower engine that spins a big blade which also cuts grass. Lawn mowers are usually around 5hp and they spin a much larger blade than a nylon fan.