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Old 04-26-2012, 02:56 PM   #11 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
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Quote:
Originally Posted by pete c View Post
I think running without the alternator for shorter trips is a very good idea. Using a portable PV array to help keep it topped off is also a good idea, but, I wonder if it's worth the cost and trouble? I think it may be if you remain parked for long enough stretches to provide a substantial charging. How long that period of time is, I have no idea. Depends on the size of the array and the strength of the sunlight.
Here is an older thread on this theme, check out Ryland's post (#2) in particular): http://ecomodder.com/forum/showthrea...ons-17009.html

Quote:
Originally Posted by pete c View Post
I think a better idea is active management of when the alternator is used and use of deep cycle batteries. A simple way would be to toggle it on with the brake light signal. An accurate voltmeter would tell you when your charge was getting low enough to need to go to full time alternator use.
This is a good idea if you drive your car engine on a lot and in the city. If you do a lot of engine off coasting, using the brakes won't engage the alternator. And if you drive a lot of the freeways (not in bumper-to-bumper traffic) a brake-activated system might not be ideal or even practical.

james

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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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