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07-21-2008, 09:43 PM
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Join Date: Nov 2007
Location: Ohio
Posts: 89
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supplenator anyone?
Anyone look at the supplenator as a standby alternator for the 360?
Anyone install one?
Any feedback?
http://www.gami.com/supplenator/supplenator.php |
07-21-2008, 10:01 PM
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Join Date: Jan 2005
Location: NC25
Posts: 3,503
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Quote:
Originally Posted by ncarmon
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Sounds like something that B&C Speciality has been selling to the Homebuilt community for years but with more current.
http://www.bandc.biz/sd20desc.html
__________________
Gary A. Sobek
NC25 RV-6 Flying
3,400+ hours
Where is N157GS
Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.
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07-22-2008, 03:53 AM
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Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,690
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Thanks for the tip
This alternator appears large enough to be my primary. I've been talking to B&C for a while, trying to get my loads down to allow their 20 amp vac pad alt to do the job. One issue that is not well advertized is that the B&C unit does not put out any significant power at idle. The salesman at the SnF booth basically said zero. I plan to check on this GAMA unit to see if it is similar.
__________________
Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
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07-22-2008, 01:03 PM
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Join Date: Jun 2005
Posts: 693
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Bill,
I have an SD-20 on Bus B, and there is always a low voltage condition at idle up to about 1500 RPM. Once you takeoff though it's fine.
__________________
Marc Ausman
RV-7 980 hours, IO-390, VP-X (sold)
RV-8 (flying a friend's)
Thinking about low and slow backcountry build.
VAF Advertiser - Aircraft Wiring Guide
Book to help with experimental aircraft wiring.
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07-22-2008, 01:12 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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Think a bit here.
The main alternator is driven from the flywheel pulley-----apx 10", to a pulley about 3" on the alt itself.
Roughly 3 to 1 overdrive.
The accessory pad is at engine speed, or maybe half I would imagine.
Seems normal for an alternator on the acc drive to be weak at idle.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010 
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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07-23-2008, 03:53 AM
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Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,690
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Darned physics, anyway
Yep, I know the vac pad is at 1.3 : 1 . vs the approx 3:1 available using a belt. When I first began dreaming of using the vac pad as primary, I had hoped that the B&C 20 amp alternator windings were designed for the lower rpm. Instead, it is essentially using the belt driven alternator rotor and windings in a new casting and accepting what you get in regards to power. This is a reasonable design for a backup alternator, but hey, I've been called unreasonable before
__________________
Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
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