Re: Alternator: which and how?
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Home away from home
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Keep us posted on your progress.
One thing to keep in mind is that "GM alternator" is simply not specific enuf make a long term decision. Which ever "GM ALTERNATOR" u decide on be sure to determine the SPECIFIC make model and year of GM product that the alternator was originaly intended for. THat way u KNOW what u have. LEt me put it another way, JUst try walking into aprts store and ask for a "GM alternator". I doubt that u will get very far. My specific recommendation, if i were converting to alternator would be to ask for 73 Chevy Caprice alternator or maybe 89 Caprice or maybe POlice version of either one of those two. Others mite have a better SPECIFIC make model and yhear recommendation. Try to avoid Cadillac simply due to cost issues. Just some research u need to do along those lines. The Cadillac is most likely same as the Chevy POlice version anyway. LEt us know what u find out.
Posted on: 2011/5/27 9:24
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VAPOR LOCK demystified: See paragraph SEVEN of PMCC documentaion as listed in post #11 of the following thread:f
https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=7245 |
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Re: Alternator: which and how?
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Forum Ambassador
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What does "self-exciting" mean? Is that the same as a "one wire" unit?
That same alternator site I referenced can give some specifics on various type alternators. Here is what they have to say about self exciting or one wire.http://www.alternatorparts.com/what_is_a_self_exciting_alternator.htm
Posted on: 2011/5/27 9:39
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Howard
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Re: Alternator: which and how?
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Home away from home
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Try this web site too. IT has an 'other applications' list feature that will list all make, model and year for any given part number (the stores part number).
http://www.oreillyauto.com/site/c/cat/Replacement+Parts/C0001/00000.oap
Posted on: 2011/5/27 9:55
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VAPOR LOCK demystified: See paragraph SEVEN of PMCC documentaion as listed in post #11 of the following thread:f
https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=7245 |
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Re: Alternator: which and how?
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I'm running the 63amp version of the 10si in my Clipper. This was basically the standard Alternator used in the mid-70s GM products. You can get them "clocked" in various positions so the the wire terminals are on the side you want them on. The also use a fan/pulley which works with the style of belts that Packard uses.
Posted on: 2011/5/27 10:01
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-BigKev
1954 Packard Clipper Deluxe Touring Sedan -> Registry | Project Blog 1937 Packard 115-C Convertible Coupe -> Registry | Project Blog |
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Re: Alternator: which and how?
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Home away from home
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Fairly big subject. There'll be auto-electricians out there in cyberspace that can explain better than me, but here goes . . . .
Basically early car generators had permanent magnetism (their armature was magnetized) incorporated in them at manufacture, so from 'startup' (spin-up) they created voltage immediately, even when car battery was flat. If that permanent magnetic field wasn't present - then no power generated at spinup. These older generators were connected to the old style voltage regulator, with F.A.D.E. terminals (Field, Ammeter, can't remember what 'D' was, and Earth). This regulator had wire-wound relays that cut in / out when the generator was at peak output (otherwise you would fry your battery with 30 volts instead of 13.6V). But they also were responsible for feeding a certain 'regulated' voltage back to the field coils of the generator to provide the extra magnetism needed for maximum efficiency. This is the principle of "self-excitation' where the generator itself provides current from it's output, to provide extra magnetism via electromagnets, rather than just relying on the weaker / less output from the permanent magnet. Therefore a more powerful generator resulted. With the advent of alternators and solid state rectifiers (with diodes) things changed. The alternator didn't have any permanent magnets in it, and relied on the car battery to energise (excite) the coils for the magnetism needed. Most still had a remotely positioned voltage regulator, so more than one wire went between alternator and regulator. Now with 'single wire' units the regulation is built into the alternator body, so the only wire 'out' is the charge wire. So, strictly speaking, one wire units have to be self-exciting, but the terminology is not a sweet fit as it is an old concept. Hope this makes sense. Others might add to it.
Posted on: 2011/5/27 10:21
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1951 Packard Club Sedan | [url=ht
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Re: Alternator: which and how?
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Home away from home
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I'd say that Kevin just gave the answer we needed.
Posted on: 2011/5/27 10:26
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VAPOR LOCK demystified: See paragraph SEVEN of PMCC documentaion as listed in post #11 of the following thread:f
https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=7245 |
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