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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	#3070 (permalink)
freebeard Master EcoModder Join Date: Aug 2012 Location: northwest of normal Posts: 27,768 Thanks: 7,800 Thanked 8,607 Times in 7,088 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.