PTO leaf blower

[Donman]

I got a very large pulley, and a very small pulley, figuring i would spin a squirrel cage fan 4x as fast as it was rated.

What a surpirse when the output was equal to a desk fan on low speed.

I got a chance to try this out again today and the way it looks to me I can't run it fast enough with my set up to make it act starved for intake air. Even at 1000 rpm pto speed wide open it blows harder than at half throttle. I do agree though that there is a speed where it will act that way - my set up just ain't fast enough.