View Single Post
Old 10-14-2013, 02:40 PM   #6 (permalink)
mort
EcoModding Lurcher
 
mort's Avatar
 
Join Date: Dec 2010
Location: Los Angeles
Posts: 333
Thanks: 150
Thanked 109 Times in 80 Posts
Quote:
Originally Posted by JRMichler View Post
I too much driving at 800 engine RPM, where the alternator is barely keeping up with the base electrical load.
Please note the alternator efficiency is at alternator RPM:

On all the cars and trucks I've seen the alternator sheave is much smaller than the crankshaft sheave, maybe 1/4 as big for old Chryslers.

-mort
Attached Thumbnails
Click image for larger version

Name:	alt-eff.JPG
Views:	222
Size:	25.9 KB
ID:	13932  
  Reply With Quote