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08-20-2019, 01:08 PM
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Join Date: Oct 2008
Location: Pleasant Prairie,Wisconsin
Posts: 67
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+1 Suzuki 60 amp alt
[quote=Mark Burns;1367957]I'd go with this auto alternator.
V-belt pulley is correct.
It's internally regulated but I'm ok with that.
You could be too
I have the same Suzuki alt and have 1100hrs on it. Winner Winner Chicken Dinner!
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08-20-2019, 01:12 PM
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Join Date: Mar 2008
Location: Dublin, CA
Posts: 1,261
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I have some of those same alternators on my list.
1976 Honda Accord 1.6L
Bosch AL257X (NAPA, Summit Racing)
14591 (Autozone)
14158 (Advanced Auto, O'Riellys)
Van's doesn't appear to sell the mounting bracket any more. It looks like B and C is the best option for a premade bracket. I'm not sure it will fit though.
__________________
Ray Tonks
2020 Donation Paid
Titan IOX-370, Dual PMAGs, 9.6:1 Pistons, FM-150
RV-7 Fuselage in progress
* Cabin Interior - In progress
RV-7 SB Wings
* Both Wings fully skinned
* Fuel Tanks Complete - No leaks finally
* Ailerons Complete
* Flaps Complete
RV-7 Empennage - Complete (a little fiberglass work left)
Vans Training Kit # 2 - Complete
RV-7 Preview Plans
Vans Training Kit #1 - Complete
EAA Sheet Metal Class - Complete
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08-20-2019, 01:55 PM
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Join Date: Jun 2006
Location: 8I3
Posts: 3,564
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Personally I would shy away from any of the older alternator designs, for a couple of reasons:
1. Local availability (don't see many 82 honda civics on the road)
2. Design improvements
3. Size (smaller)
4. Reliability improvements
The 12179 knockoffs are cheap enough you can have more than one spare shelf. I have a few but have yet to replace one thats been in-service.
Fan direction seems to have no effect on reliability in my experience.
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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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08-20-2019, 02:06 PM
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Join Date: Mar 2008
Location: Dublin, CA
Posts: 1,261
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I found the Vans brackets for those who are interested. Doing a search for Alternator didn't work since it's not in the title I guess. I tried ALT and that provided two different possible brackets.
__________________
Ray Tonks
2020 Donation Paid
Titan IOX-370, Dual PMAGs, 9.6:1 Pistons, FM-150
RV-7 Fuselage in progress
* Cabin Interior - In progress
RV-7 SB Wings
* Both Wings fully skinned
* Fuel Tanks Complete - No leaks finally
* Ailerons Complete
* Flaps Complete
RV-7 Empennage - Complete (a little fiberglass work left)
Vans Training Kit # 2 - Complete
RV-7 Preview Plans
Vans Training Kit #1 - Complete
EAA Sheet Metal Class - Complete
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08-20-2019, 02:59 PM
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Join Date: Oct 2009
Location: Edson, Alberta, Canada
Posts: 483
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Had a Prestolite but.....
would not fit in the cowling (for sale if anyone wants it)
After hours of reading and consulting my opinion is that if you are knowledgeable the Automotive alternators may be an option.
However, in that poll which i read long ago it was discovered that many B and C alt. go 1000+ hrs.
I went with a B and C alternator and it came with a bracket. Some things are better left alone and having an alternator failure VFR at night with a glass panel was not on my list of fun things to do.
IMHO - go B&C.
__________________
Dave Cobb
[color="Red"]=VAF=2019 Donation - and a bit extra for great work![/COLOR="blue"]
Empennage RV 7 - Tipper
Wings complete
Dynon installed and running
Fuse closer to completion, Canopy complete
AME reviewed and repaired O-320-Lyc installed
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08-20-2019, 06:16 PM
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Join Date: Mar 2005
Location: SE Florida
Posts: 1,499
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Why counterclockwise rotation?
Quote:
Originally Posted by rapid_ascent
snipped I'd like a 50+ amp, external regulator alternator. Preferably counter clockwise rotation. Also, I'd prefer not to have to swap the pulley to a single groove pulley. Anyone gone down this path recently?
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Why do you want a counterclockwise rotation alternator? Lycoming spin clockwise. Honda's older models also spin clockwise. Just about every other car manufacturer has their engines turn counter-clockwise. External voltage regulation on automotive alternators pretty much went away after the 1983 model year.
Auto manufacturers All pretty much did away with external voltage Regulators after the 1983 model year. However Chrysler in the mid-90s in their wacko wisdom decided to make the voltage regulator part of the engine computer rather than being an internal component of the alternator. go to the auto parts store and ask for an alternator for a 1995 Dodge half ton van. Engine size doesn't really matter. you'll get a nice Nippon Denso 70 - 80 amp alternator that spins counter-clockwise. Best of all it's set up for external voltage regulator because Chrysler put the voltage regulator in the engine computer. If you have a half inch air impact gun it's very easy to take the nut off and change the pulley out. Can be done in under 3 minutes.
Charlie
Last edited by chaskuss : 11-16-2019 at 12:16 PM.
Reason: Fix syntax error
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08-21-2019, 10:03 AM
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Join Date: Nov 2006
Location: Savannah, GA
Posts: 1,029
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Direction of rotation may depend on how it's defined on engine vs alternator. If you define alternator rotation looking from the pulley end, it would be counter-clockwise. Anyone know which case holds?
I too am alternator shopping but would like an 80A unit (electrically dependent engine, IFR, some goodies, and I want plenty of margin). I found a potential Denso unit on Summit but I need to verify a few things. If anyone has already picked out such a beast with external regulation I'm all ears.
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RV-7ER - finishing kit and systems installation
There are two kinds of fool in the world. The first says "this is old, and therefore good"; the second says "this is new, and therefore better".
Last edited by rmartingt : 08-21-2019 at 10:03 AM.
Reason: I hate typing on phones
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08-21-2019, 10:32 AM
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Join Date: Jul 2018
Location: WNC
Posts: 246
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Does rotation really matter? It's AC output. The rectifier doesn't care which way the rotor spins.
A 1g Ford alternator that's been upgraded to 55A+ internals would fit the bill. I've taken them apart and I don't recall seeing anything internally that was directional but I wasn't looking. The only thing that would be is the cooling fan. I have one sitting on the shelf I could disassemble.
I have this Powermaster on my '68 Mustang and it works. I don't have much time on it though. There are millions of Ford 1g alternators out there. They come in all sorts of cases as well.
The Aerotech and Falcon alternators are a spitting image of Ford 1g units..
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08-21-2019, 10:36 AM
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Join Date: Mar 2006
Location: Ottawa, ON
Posts: 650
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Quote:
Originally Posted by jacoby
Does rotation really matter? It's AC output. The rectifier doesn't care which way the rotor spins...
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The cooling fan is the issue, as it is designed to be more efficient in one direction.
__________________
Alfio
RV-9A Ottawa, Canada
First flight Dec. 18, 2008
> 1,000 hrs tach.
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08-21-2019, 10:39 AM
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Join Date: Jan 2005
Posts: 4,285
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HEAT IS THE KILLER....
Shield the Alternator for exhaust pipe heat as much as possible
Air blast tube on regulator (back) is a good idea.
Balance your prop... fixed or CS... less vibe's the better.
+1 on advice you got in this thread.
__________________
George
Raleigh, NC Area
RV-4, RV-7, ATP, CFII, MEI, 737/757/767
2020 Dues Paid
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