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06-28-2018, 08:18 PM
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Join Date: Jun 2013
Location: Jacksonville, FL
Posts: 132
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Automotive alternator
Can anyone recommend a part number for an automotive one wire alternator that can fit on an O-320. I am not real particular on the amperage and will take anything over 30A.
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06-28-2018, 09:49 PM
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Join Date: May 2006
Location: Pocahontas MS
Posts: 3,884
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Look for a mid 90's Suzuki Samurai/Swift, Geo Metro/Tracker. Here's one example at 55 amps:
https://smile.amazon.com/LActrical-A...ift+alternator
You may need to change the pulley. Some of the older Samurai alts came with single V pulleys (and lower current), but the one I linked obviously has a multi-V.
Charlie
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06-28-2018, 11:57 PM
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Join Date: Apr 2009
Location: Stockton, California
Posts: 296
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06-29-2018, 05:09 AM
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Join Date: Aug 2016
Location: Asheville, NC
Posts: 2,104
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Quote:
Originally Posted by Marc Bourget
You don't plan to fly over about 6000 ft?
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I don't understand your comment. I have a 30A Toyota (I think) alternator in my Lancair and it works fine at 12,500'. Should I be worried about something?
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(2020 dues paid)
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06-29-2018, 06:22 AM
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Join Date: May 2007
Location: Inver Grove Hgts, MN
Posts: 329
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I've had my "science fair project" Honda alternator to 16,500, no problem...
__________________
Mike Hilger
RV-6 N207AM w/G3X, 1,600 hours +
South St. Paul, MN (KSGS)
A&P, EAA Tech Counselor
We're all here because we're not all there...
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06-29-2018, 06:33 AM
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Join Date: Jun 2006
Location: 8I3
Posts: 3,564
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__________________
Please don't PM me! Email only!
Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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06-29-2018, 10:26 AM
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Join Date: Mar 2008
Location: Reno NV
Posts: 542
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Automotive alternator
I use the Ultra 14870 60 amp (lifetime warranty) unit from the aviation aisle of of O'Riellys. Dan from Reno
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06-29-2018, 10:34 AM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,652
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Quote:
Originally Posted by brian257
Can anyone recommend a part number for an automotive one wire alternator that can fit on an O-320...
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Just to be clear, do you mean a true "one wire" - an alternator that has only the output wire, or do you mean the more conventional "internally regulated" which has two wires (output and field/turn on)?
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.
Michael Robinson
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Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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06-29-2018, 12:29 PM
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Join Date: Mar 2008
Location: Clarksboro, NJ
Posts: 829
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17,500 with an automotive alternator, but I don't think he was referring to a true altitude issue as much as a joking comment on reliability. I have 900hrs on mine.
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06-30-2018, 09:47 AM
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Join Date: Apr 2009
Location: Stockton, California
Posts: 296
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My comment about operating altitudes came from a conversation with an actual engineer buried in the back- shop of Plane Power.
I recall two points of interest, rpm and brushes. After further research, I my memory has been refreshed and I correct my post. Please forgive, it was offered in good faith.
Posts subsequent to mine, questioning my point, caused me to do more research this morning and I came across a forgotten article, April 93, (updated 2003) by Bob Nuckolls where he explained:
"One of my readers called recently to say he had been verbally keel-hauled by an engineer with an alternator manufacturing company. The reader had confessed to considering a plain vanilla brush for use in the alternator on his RV-4. There's a lot of "hangar mythology" about what constitutes aircraft ratings in components. We all know that much of what is deemed "aircraft" today are the same products certified onto airplanes 30-50 years ago. Many developers and suppliers consider aviation a "dying" market; few are interested in researching and qualifying new products. However, automotive markets continue to advance in every technology.
It is sad to note that many products found on cars today far exceed the capabilities and quality of similar hardware found on certified airplanes. Alternators, motors and components thereof are striking examples!"
I had no reason, at the time I spoke with Plane Power's Tech guy, to question his statement and forgot the above article gathered as part of my "due diligence" back in 2011 or so.
Onward and upward
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