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tdawson-townsend(at)auror
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 Posted: Wed Jun 16, 2010 3:41 pm Post subject: SD-20 alternator |
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Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but I’m wondering if it really has to get up to “run up” engine speeds to produce much. I did basic trouble shooting in the hangar and didn’t see anything amiss.
What are the experiences of others?
TDT
Tim Dawson-Townsend
RV-10 40025
tdt(at)aurora.aero (tdt(at)aurora.aero)
617-500-4812 (office)
617-905-4800 (mobile)
[quote][b]
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Phil.Perry(at)netapp.com
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| Posted: Wed Jun 16, 2010 3:53 pm Post subject: SD-20 alternator |
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An ALT should be producing power at the most modest idle settings. A generator would behave as you described.
Phil
________________________________
From: Dawson-Townsend,Timothy <tdawson-townsend(at)aurora.aero>
To: rv10-list(at)matronics.com <rv10-list(at)matronics.com>
Sent: Wed Jun 16 16:16:36 2010
Subject: RV10-List: SD-20 alternator
Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but I’m wondering if it really has to get up to “run up” engine speeds to produce much. I did basic trouble shooting in the hangar and didn’t see anything amiss.
What are the experiences of others?
TDT
Tim Dawson-Townsend
RV-10 40025
tdt(at)aurora.aero
617-500-4812 (office)
617-905-4800 (mobile)
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rene(at)felker.com
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| Posted: Wed Jun 16, 2010 3:59 pm Post subject: SD-20 alternator |
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I am and I think it has to be 1800 RPM or better. But don’t quote me……..
Rene' Felker
N423CF
801-721-6080
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Dawson-Townsend,Timothy
Sent: Wednesday, June 16, 2010 5:17 PM
To: rv10-list(at)matronics.com
Subject: SD-20 alternator
Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but I’m wondering if it really has to get up to “run up” engine speeds to produce much. I did basic trouble shooting in the hangar and didn’t see anything amiss.
What are the experiences of others?
TDT
Tim Dawson-Townsend
RV-10 40025
tdt(at)aurora.aero (tdt(at)aurora.aero)
617-500-4812 (office)
617-905-4800 (mobile)
| Quote: | | http://www.matronics.com/Navigator?RV10-List |
0123456789
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recapen(at)earthlink.net
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| Posted: Wed Jun 16, 2010 4:02 pm Post subject: SD-20 alternator |
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Mine works fine at idle speeds - I test it each time by energizing it before the primary.
[quote] ---
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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 25203
Location: Livermore CA USA
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| Posted: Wed Jun 16, 2010 4:05 pm Post subject: SD-20 alternator |
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Did you connect it up with a B&C external regulator? I've got an SD-20 as a secondary on my RV-8 and I find that it works nicely. At idle, however, it definitely doesn't put out full current. At cruse it does alright, but it can't keep up if I've got all the lights turned on. This is to be expected, though, since its only rated at 20amps.
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's RV-8 Construction Log
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: Enjoying The Fruits of 2500 Hours of Labor...
At 04:16 PM 6/16/2010 Wednesday, you wrote:
| Quote: | Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but Im wondering if it really has to get up to run up engine speeds to produce much. I did basic trouble shooting in the hangar and didnt see anything amiss.
What are the experiences of others?
TDT
Tim Dawson-Townsend
RV-10 40025
<mailto:tdt(at)aurora.aero>tdt(at)aurora.aero
617-500-4812 (office)
617-905-4800 (mobile)
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http://www.matronics.com/Navigator?RV10-List |
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Matt Dralle
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partner14
Joined: 12 Jan 2008
Posts: 540
Location: Granbury Texas
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| Posted: Wed Jun 16, 2010 4:13 pm Post subject: SD-20 alternator |
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Although my B&C 60amp alternator seems to work fine at lower rpm settings, the 20 seems to need more revs to offset the load and show a positive current.
My experience, Don McDonald
--- On Wed, 6/16/10, Dawson-Townsend,Timothy <tdawson-townsend(at)aurora.aero> wrote:
| Quote: |
From: Dawson-Townsend,Timothy <tdawson-townsend(at)aurora.aero>
Subject: SD-20 alternator
To: rv10-list(at)matronics.com
Date: Wednesday, June 16, 2010, 4:16 PM
Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but I’m wondering if it really has to get up to “run up” engine speeds to produce much. I did basic trouble shooting in the hangar and didn’t see anything amiss.
What are the experiences of others?
TDT
Tim Dawson-Townsend
RV-10 40025
tdt(at)aurora.aero (tdt(at)aurora.aero)
617-500-4812 (office)
617-905-4800 (mobile)
| Quote: |
get=_blank rel=nofollow>http://www.matronics.com/Navigator?RV10-List
=nofollow>http://forums.matronics.com
blank rel=nofollow>http://www.matronics.com/contribution
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[quote][b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Don A. McDonald
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n223rv(at)wolflakeairport
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| Posted: Wed Jun 16, 2010 4:24 pm Post subject: SD-20 alternator |
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How are you troubleshooting it? It will not output anything until the main alternator 'fails'. Start the engine, pull the breaker or turn the main alternator off and the secondary should kick in.
Sent from my iPhone
On Jun 16, 2010, at 7:16 PM, "-Townsend,Timothy" <tdawson-townsend(at)aurora.aero (tdawson-townsend(at)aurora.aero)> wrote:
[quote]
Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but I’m wondering if it really has to get up to “run up” engine speeds to produce much. I did basic trouble shooting in the hangar and didn’t see anything amiss.
What are the experiences of others?
TDT
Tim Dawson-Townsend
RV-10 40025
[url=mailto:tdt(at)aurora.aero]tdt(at)aurora.aero (tdt(at)aurora.aero)[/url]
617-500-4812 (office)
617-905-4800 (mobile)
| Quote: |
href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
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[b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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aarongleixner(at)sbcgloba
Guest
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| Posted: Wed Jun 16, 2010 5:10 pm Post subject: SD-20 alternator |
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I just got my plane flying, and thought I had a problem with my B&C SD-20. It did not appear to work at all (voltage at battery voltage when turned on during ground runs). Rather than trouble shoot the backup alternator, I decided to "fix" after first flight. Once I got the plane flying and running at higher RPM, it worked fine.
Aaron
From: Don McDonald <building_partner(at)yahoo.com>
To: rv10-list(at)matronics.com
Sent: Wed, June 16, 2010 8:12:34 PM
Subject: Re: SD-20 alternator
Although my B&C 60amp alternator seems to work fine at lower rpm settings, the 20 seems to need more revs to offset the load and show a positive current.
My experience, Don McDonald
--- On Wed, 6/16/10, Dawson-Townsend,Timothy <tdawson-townsend(at)aurora.aero> wrote:
| Quote: |
From: Dawson-Townsend,Timothy <tdawson-townsend(at)aurora.aero>
Subject: SD-20 alternator
To: rv10-list(at)matronics.com
Date: Wednesday, June 16, 2010, 4:16 PM
Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but I’m wondering if it really has to get up to “run up” engine speeds to produce much. I did basic trouble shooting in the hangar and didn’t see anything amiss.
What are the experiences of others?
TDT
Tim Dawson-Townsend
RV-10 40025
tdt(at)aurora.aero
<?XML:NAMESPACE PREFIX = SKYPE /> 617-500-4812 617-500-4812 (office)
617-905-4800 617-905-4800 (mobile)
| Quote: |
get=_blank rel=nofollow>http://www.matronics.com/Navigator?RV10-List=nofollow>http://forums.matronics.com
blank rel=nofollow>http://www.matronics.com/contribution
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[quote]p://www.matronics.com/contribution" target=_blank rel=nofollow>http://w=======================
[b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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sean(at)stephensville.com
Guest
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| Posted: Wed Jun 16, 2010 6:06 pm Post subject: SD-20 alternator |
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"Status: Enjoying The Fruits of 2500 Hours of Labor..."
Matt, quit enjoying those fruit and get us some videos. Priorities man, priorities! 
do not archive
Sean
#40303 - Not eating any fruit.
On 6/16/10 7:04 PM, Matt Dralle wrote:
| Quote: |
Did you connect it up with a B&C external regulator? I've got an SD-20 as a secondary on my RV-8 and I find that it works nicely. At idle, however, it definitely doesn't put out full current. At cruse it does alright, but it can't keep up if I've got all the lights turned on. This is to be expected, though, since its only rated at 20amps.
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com - Matt's RV-8 Construction Log
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: Enjoying The Fruits of 2500 Hours of Labor...
At 04:16 PM 6/16/2010 Wednesday, you wrote:
> Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but Im wondering if it really has to get up to run up engine speeds to produce much. I did basic trouble shooting in the hangar and didnt see anything amiss.
>
> What are the experiences of others?
>
> TDT
>
> Tim Dawson-Townsend
> RV-10 40025
> <mailto:tdt(at)aurora.aero>tdt(at)aurora.aero
> 617-500-4812 (office)
> 617-905-4800 (mobile)
>
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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Deems Davis
Joined: 09 Jan 2006
Posts: 925
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| Posted: Wed Jun 16, 2010 6:23 pm Post subject: SD-20 alternator |
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B&C used to have a graph, that plotted AMP output vs RPM for all of their alternators. I just looked on their web-site and couldn't find it. My memory of the graph is that the SD-20 doesn't produce it's full 20 am output until it's turning near max RPM's. My SD-20 Low Voltage light is lit when the engine is at idle. I have a check list item on my run-up to check that it extinguishes when I go through my run up.
Deems Davis
N519PJ
www.deemsrv10.com
On 6/16/2010 6:09 PM, Aaron Gleixner wrote: [quote] I just got my plane flying, and thought I had a problem with my B&C SD-20. It did not appear to work at all (voltage at battery voltage when turned on during ground runs). Rather than trouble shoot the backup alternator, I decided to "fix" after first flight. Once I got the plane flying and running at higher RPM, it worked fine.
Aaron
From: Don McDonald <building_partner(at)yahoo.com> (building_partner(at)yahoo.com)
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Sent: Wed, June 16, 2010 8:12:34 PM
Subject: Re: SD-20 alternator
Although my B&C 60amp alternator seems to work fine at lower rpm settings, the 20 seems to need more revs to offset the load and show a positive current.
My experience, Don McDonald
--- On Wed, 6/16/10, Dawson-Townsend,Timothy <tdawson-townsend(at)aurora.aero> (tdawson-townsend(at)aurora.aero) wrote:
| Quote: |
From: Dawson-Townsend,Timothy <tdawson-townsend(at)aurora.aero> (tdawson-townsend(at)aurora.aero)
Subject: SD-20 alternator
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Date: Wednesday, June 16, 2010, 4:16 PM
Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but I’m wondering if it really has to get up to “run up” engine speeds to produce much. I did basic trouble shooting in the hangar and didn’t see anything amiss.
What are the experiences of others?
TDT
Tim Dawson-Townsend
RV-10 40025
tdt(at)aurora.aero
617-500-4812 617-500-4812 (office)
617-905-4800 617-905-4800 (mobile)
|
| Quote: | p://www.matronics.com/contribution" target=_blank rel=nofollow>http://w=======================
href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
|
[b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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gengrumpy(at)aol.com
Guest
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| Posted: Wed Jun 16, 2010 11:04 pm Post subject: SD-20 alternator |
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Mine runs fine above 1200 rpm or so.
Grumpy
Do not archive
Sent from my iPad
On Jun 16, 2010, at 6:21 PM, Deems Davis <deemsdavis(at)cox.net (deemsdavis(at)cox.net)> wrote:
[quote] B&C used to have a graph, that plotted AMP output vs RPM for all of their alternators. I just looked on their web-site and couldn't find it. My memory of the graph is that the SD-20 doesn't produce it's full 20 am output until it's turning near max RPM's. My SD-20 Low Voltage light is lit when the engine is at idle. I have a check list item on my run-up to check that it extinguishes when I go through my run up.
Deems Davis
N519PJ
www.deemsrv10.com
On 6/16/2010 6:09 PM, Aaron Gleixner wrote: | Quote: | I just got my plane flying, and thought I had a problem with my B&C SD-20. It did not appear to work at all (voltage at battery voltage when turned on during ground runs). Rather than trouble shoot the backup alternator, I decided to "fix" after first flight. Once I got the plane flying and running at higher RPM, it worked fine.
Aaron
From: Don McDonald <[url=mailto:building_partner(at)yahoo.com]building_partner(at)yahoo.com (building_partner(at)yahoo.com)>[/url]
To: [url=mailto:rv10-list(at)matronics.com]rv10-list(at)matronics.com (rv10-list(at)matronics.com)[/url]
Sent: Wed, June 16, 2010 8:12:34 PM
Subject: Re: SD-20 alternator
Although my B&C 60amp alternator seems to work fine at lower rpm settings, the 20 seems to need more revs to offset the load and show a positive current.
My experience, Don McDonald
--- On Wed, 6/16/10, Dawson-Townsend,Timothy <[url=mailto:tdawson-townsend(at)aurora.aero]tdawson-townsend(at)aurora.aero (tdawson-townsend(at)aurora.aero)>[/url] wrote:
| Quote: |
From: Dawson-Townsend,Timothy <[url=mailto:tdawson-townsend(at)aurora.aero]tdawson-townsend(at)aurora.aero (tdawson-townsend(at)aurora.aero)>[/url]
Subject: SD-20 alternator
To: [url=mailto:rv10-list(at)matronics.com]rv10-list(at)matronics.com (rv10-list(at)matronics.com)[/url]
Date: Wednesday, June 16, 2010, 4:16 PM
Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but I’m wondering if it really has to get up to “run up” engine speeds to produce much. I did basic trouble shooting in the hangar and didn’t see anything amiss.
What are the experiences of others?
TDT
Tim Dawson-Townsend
RV-10 40025
tdt(at)aurora.aero (tdt(at)aurora.aero)
617-500-4812 617-500-4812 (office)
617-905-4800 617-905-4800 (mobile)
|
href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
|
[b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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rene(at)felker.com
Guest
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| Posted: Thu Jun 17, 2010 5:03 am Post subject: SD-20 alternator |
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Need to add a correction……..I am running the 8 amp model……not the 20 amp.
Rene' Felker
N423CF
801-721-6080
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Rene Felker
Sent: Wednesday, June 16, 2010 5:55 PM
To: rv10-list(at)matronics.com
Subject: RE: SD-20 alternator
I am and I think it has to be 1800 RPM or better. But don’t quote me……..
Rene' Felker
N423CF
801-721-6080
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Dawson-Townsend,Timothy
Sent: Wednesday, June 16, 2010 5:17 PM
To: rv10-list(at)matronics.com
Subject: SD-20 alternator
Anyone using a B&C SD-20 alternator on the vacuum pad? I was not getting any juice on initial engine runs, but I’m wondering if it really has to get up to “run up” engine speeds to produce much. I did basic trouble shooting in the hangar and didn’t see anything amiss.
What are the experiences of others?
TDT
Tim Dawson-Townsend
RV-10 40025
tdt(at)aurora.aero (tdt(at)aurora.aero)
617-500-4812 (office)
617-905-4800 (mobile)
| Quote: | | http://www.matronics.com/Navigator?RV10-List http://forums.matronics.com http://www.matronics.com/contribution |
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| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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