I might take isue with the statement motor alts don't make much power.
I'm flying a 1/2 hp motor conversion thats is producing 2025 watts at 30 mph.
I will agree however that ceiling fan motors won't make much power.
4 magnets and a garbage disposal motor can do an easy 650 watts at 30 mph.
This is with stock coils. No rewinding.
Just my input from a motor conversion dood. Not trying to step on any toes. Just didn't want someone to think baddly of motor conversions.
JK TAS Jerry