Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

freebeard · 03-21-2017, 12:27 AM

I looked at it the other way (I was going to let this go, but...)

A 30Krpm alternator on an engine good for maybe 6Krpm would be 5:1 ratio. If the alternator pulley were 3" the crank pulley would be 15". That's THIS BIG.

03-21-2017, 12:27 AM	#3069 (permalink)
freebeard Master EcoModder Join Date: Aug 2012 Location: northwest of normal Posts: 27,665 Thanks: 7,767 Thanked 8,575 Times in 7,061 Posts	I looked at it the other way (I was going to let this go, but...) A 30Krpm alternator on an engine good for maybe 6Krpm would be 5:1 ratio. If the alternator pulley were 3" the crank pulley would be 15". That's THIS BIG.