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Old 11-14-2007, 04:18 PM   #1
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Join Date: Apr 2006
Posts: 13
Do not understand how Alternator low voltage load increase MPG.

I understand if you disconnect the belt from the alternator you will get better mpg.

What I do not understand, is how does regulating the voltage required to keep your car running increase mpg?

I also can see replacing batteries would be a cost increase.

I've read about switching to LEDS and some newer cars that lower the amount of voltage drawn from the alternator if the car is not requiring the full amount of voltage.

I need schooling!

An after thought. What about running the alternator off one of the drive axels? It would not turn when at a stop, (battery support only) then when you drive the axles would turn the alternator.

A pulley could be machined, from the inside out, to the outer diameter of the drive axle and welded. You could hang the alternator off the body and you would not have to extend the wiring that far. Only issue is, you would have to detach your drive axle from the output flange on your transmission to change a belt.

Regards,

Ryan
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