---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 12/22/10: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:10 AM - Re: Using a SD-20 Alternator on a Lycoming R-680 (Robert L. Nuckolls, III) 2. 06:02 PM - Re: Using a SD-20 Alternator on a Lycoming R-680 (Kent Orr) 3. 06:11 PM - Re: Using a SD-20 Alternator on a Lycoming R-680 (Robert L. Nuckolls, III) 4. 08:25 PM - Is this good practice? (rvg8tor) ________________________________ Message 1 _____________________________________ Time: 06:10:32 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Using a SD-20 Alternator on a Lycoming R-680 At 11:31 PM 12/21/2010, you wrote: >Hello All, > >Dad and I are restoring a Stearman and would like to put a modern >alternator and electrical system on it without going to the expense >of a Jasco alternator. Our Stearman has the Lycoming R-680. Does >anyone have any experience or suggestions doing this with a B&C >SD-20 alternator? Any help and advice will be greatly appreciated. Does the engine have and AND20000 drive pad on it? Does it turn fast enough to stroke the SD20 to full output (4000 rpm). Is it stressed sufficiently for extracting the horsepower required to power the SD-20? Suggest you contact B&C at 316-283-8000 and discuss your design goals with them. Bob . . . ________________________________ Message 2 _____________________________________ Time: 06:02:21 PM PST US From: "Kent Orr" Subject: RE: AeroElectric-List: Using a SD-20 Alternator on a Lycoming R-680 Hi Bob, Thanks for your response. The engine has the standard vacuum pump mounting pad which I think is the AND20000 you mentioned. We are researching the output speed of this drive. We have not thought about how this drive is stressed. That is an excellent point to consider. We will investigate this further along with calling B&C. Mostly, I am fishing to see if this has been done before with a radial engine in an attempt to keep from reinventing the wheel when we go for a field approval. Thanks again for your help. Best wishes for a Happy Holiday season!! Kent -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L. Nuckolls, III Sent: Wednesday, December 22, 2010 8:07 AM Subject: Re: AeroElectric-List: Using a SD-20 Alternator on a Lycoming R-680 At 11:31 PM 12/21/2010, you wrote: Hello All, Dad and I are restoring a Stearman and would like to put a modern alternator and electrical system on it without going to the expense of a Jasco alternator. Our Stearman has the Lycoming R-680. Does anyone have any experience or suggestions doing this with a B&C SD-20 alternator? Any help and advice will be greatly appreciated. Does the engine have and AND20000 drive pad on it? Does it turn fast enough to stroke the SD20 to full output (4000 rpm). Is it stressed sufficiently for extracting the horsepower required to power the SD-20? Suggest you contact B&C at 316-283-8000 and discuss your design goals with them. Bob . . . ________________________________ Message 3 _____________________________________ Time: 06:11:06 PM PST US From: "Robert L. Nuckolls, III" Subject: RE: AeroElectric-List: Using a SD-20 Alternator on a Lycoming R-680 At 07:56 PM 12/22/2010, you wrote: >Hi Bob, > >Thanks for your response. The engine has the standard vacuum pump >mounting pad which I think is the AND20000 you mentioned. We are >researching the output speed of this drive. We have not thought >about how this drive is stressed. That is an excellent point to >consider. We will investigate this further along with calling >B&C. Mostly, I am fishing to see if this has been done before with >a radial engine in an attempt to keep from reinventing the wheel >when we go for a field approval. Thanks again for your help. > If it has been done, I suspect that B&C has a high probability of knowing about it. Best wishes for a Happy Holiday season!! You too! Bob . . . ________________________________ Message 4 _____________________________________ Time: 08:25:21 PM PST US Subject: AeroElectric-List: Is this good practice? From: "rvg8tor" My Breaker panel will be hinged at the bottom, the idea being future maintenance, you just have to tip the panel out to get to the bus bars. In order to support the wire bundles I want to use a cushion clamp attached to the bus bar. I have a a tie for two rows of breakers that is held together with #8 screws, this is a convenient place for a cushion clamp. You can see the clamp in the photo. The clamp is totally cushioned, (WDG type) so the wires will not touch any metal, but there would be voltage running trough the metal part of the clamp. I wonder if this could cause problems? It would take more work but I can fashion a standoff attached to the panel to make the same support. Just wonder if the easy route will work. Thanks for the help -------- Mike "Nemo" Elliott RV-8A QB (Fuselage) Read this topic online here: http://forums.matronics.com/viewtopic.php?p=324177#324177 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.