Clutch style fan?

mullinax, what fan did you buy that moves 3500 cfm?

I run a 16" that flows 2950 cfm and it works great...I'll never run a belt driven fan again.
Hot cam, I live in Florida and can idle all day.
It's mounted in a custom aluminum shroud and has a thermostat to turn it on and off. When that thing comes on it's one incredible heat wave!