I currently have a 120A alternator installed (the Cadillac conversion). I might be able to use a 500A DC/AC convertor with a peak for 750A. The 500A would increase the amount of time the fog element to heat. Not a big deal. It would be warm my the time I arrived at the show. My plan it to hit the fog when I am coming to a stop to provide a little effect and then switch it off as I drive. Otherwise I'd be Spy Hunter! The fog machine I have just bought will not run all the time. I have a wireless remote that I can use to turn the fog on and off as needed. I'm going to keep investigating... thanks for the help. > -----Original Message----- > From: Walter Coe [mailto:Whalt@xxxxxxx] > Sent: Friday, August 16, 2002 2:37 PM > To: DMCForum@xxxxxxxxxxxxxxx > Subject: Re: [DMCForum] To all the electrical gurus > > Travis, > > > I will use a DC/AC power inverter for the power supply. It's gotta be a > > hefty one, 500-700W. Can anyone foresee a problem using this? > > Doing a little math tells me that 600W is going to draw close to 50 amps > from the alternator. You are going to have a hard time getting this kind > of > juice from a normal alternator at a reasonable duty cycle or any > alternator > at idle speed. > > While I was at a local alternator rebuild shop to get my truck alternator > fixed, I brought two John Hervey alternators to see what they would do on > his test bench. I don't mean to sound like a commercial, but the 150 amp > version of what he sells may be your ticket. > > I asked about other alternatives, and the shop owner told me that the 150 > I > brought was about the best anyone could do with a conventional design at > low > RPMs. There are beefier designs, but they don't put out well at low RPM > (idle). If you go this route, then you might need to come up with a way > to > make your car idle at 1200+ RPM. > > He told me about another option which was using a "generator" as is used > in > large diesel trucks. They put out gobs of current at low RPM, but they > are > big & cost a bundle. It would barely fit in the stock alternator location > in the D (if at all) and it would cost around $800 - $900. If I > understood > him correctly, they start out with something on par with household AC and > then turn it into DC to run the truck. If this is correct, maybe you > could > use such a setup to run your BTTF accessories and skip using the inverter. > > I would love to find a way to make my car run continuously at idle without > eventually killing the battery. No alternator can do this -- not even > John > Hervey's. > > Walt ------------------------ Yahoo! Groups Sponsor ---------------------~--> 4 DVDs Free +s&p Join Now http://us.click.yahoo.com/pt6YBB/NXiEAA/Ey.GAA/HliolB/TM ---------------------------------------------------------------------~-> To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
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