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sportav8r(at)aol.com
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 Posted: Sat Jan 14, 2006 4:50 pm Post subject: need some advice here, guys- alternator for RV |
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Armed with info gleaned from the AeroElectric list and elsewhere on the web, I went alternator-shopping at the local auto parts stores today, to see how close I could get to the recommended 70 A machine that goes by part number Lester 13353 or NipponDenso 121000-346. If I had not had the additional tidbit that it fits a '93 Dodge Ramcharger 5.2 liter pickup, I think the parts counter clerks would have been helpless to assist me. The choices that came up "in stock" were limited to one: the Dodge's optional 90 amp externally-regulated machine (reman) with a serpentine pulley, in a 125mm case. My quest for a VR-166 Ford regulator also ended with a substitute, the Sorensen VR-301.
The alternator comes with its own computer-generated test output graph and data table, indicating it is capable of 126 amps at 6000 rpm, and draws 5.72 amps of field current at that output. It seems to weigh about 11 lbs on the bathroom scales. Already I'm thinking this might be more of a fire-breathing machine than I should bolt to my RV, even if it's a physical fit, which I think it will be. I'm not sure the electronic regulator will necessarily "handle" it, but not sure why it wouldn't. I don't need anywhere near the output this alternator is capable of, and I don't want my 5 amp field breaker nuisance-tripping because the field happens to want near that amount (no idea how linear the field current vs output curve might be, so no way to know field current at closer to 50-60 amps, for example.)
Finally, I'm unsure how easily the V-pulley from my original Van's 35 A machine will slip onto the shaft of the new alternator. Any takers on that one? When I make the swap, I'd like to have everything go smoothly with a minimum of downtime. Basically, I'd like some reassurance that this is worth trying. I can always take it back and order the Dodge 70 amp alternator; same physical size, and ironically more money.
Advice appreciated, friends. Thanks.
-Bill Boyd RV-6A O-320 FP
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vitez(at)carolina.rr.com
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| Posted: Sat Jan 14, 2006 5:18 pm Post subject: need some advice here, guys- alternator for RV |
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Whatcha gonna do with all those amps Stormy? What kind of loads are you
anticipating?
Radomir
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sportav8r(at)aol.com
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| Posted: Sat Jan 14, 2006 5:48 pm Post subject: need some advice here, guys- alternator for RV |
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Don't exactly know, Radomir, but I trust it will put and end to the pulsating radio and instrument lights I have now with the 35 amp unit, and the low volts warning light that comes on after a minute with the landing lights on 
-Stormy
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chagerty(at)worldnet.att.
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| Posted: Sun Jan 15, 2006 11:56 am Post subject: need some advice here, guys- alternator for RV |
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