rotorwrench
Well-known member
I look at it this way. A 5 HP Briggs & Stratton engine would propel a go cart at a pretty good clip and a 4 HP wouldn't be far behind. My guess is that there is one too many zeros in that percentage. It's likely closer to 1%.
An electric fan with 3' blade span only needs about 1/2 HP to pull it with a belt and all.
An electric fan with 3' blade span only needs about 1/2 HP to pull it with a belt and all.