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Old 04-28-2009, 01:53 PM   #10 (permalink)
RandomFact314
My Goal: 35 MPG
 
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Join Date: Mar 2009
Location: South Carolina
Posts: 395

HAPPY - '00 Neon
90 day: 27.72 mpg (US)

G/F's Car - Kyan - '01 Rio
90 day: 25.79 mpg (US)
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Quote:
Originally Posted by theunchosen View Post
defroster as is stated turns on the compressor in most cars.

No the alt produces only as much power as is loaded.

Think about an anenometer(wind vain). If the vain is moving slower than the wind it obviously drains the wind(if it is pumping water or something), but if you disconnect it from the pump it will spin the same speed(theoretically) as the wind and not cause any(much) resistance. Alt works the same way just consider electricity a fluid and the electrical wiring are pipes and the alt is a pump, if its already moving as fast as the pump can get it the pump doesn't require as much juice.
So in other words, The more things your running the more your alternator is having to work, the more MPG your giving up.... And basically the amount of MPG you go down are depending on the power the object consumes? I think I got it right. Now how about the heater? It uses electricity obvious but is it a large amount?
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