---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 08/09/18: 14 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:30 AM - Re: Y connections (Art Zemon) 2. 05:08 AM - Re: Y connections (C&K) 3. 05:48 AM - Re: Y connections (Werner Schneider) 4. 07:11 AM - Re: Y connections (FLYaDIVE) 5. 09:09 AM - Re: Y connections (Robert L. Nuckolls, III) 6. 10:27 AM - Re: Y connections (Pat Little) 7. 12:01 PM - Re: CROWBARS? (bob noffs) 8. 01:46 PM - Re: Y connections (Robert L. Nuckolls, III) 9. 03:07 PM - Re: Y connections (Charlie England) 10. 03:26 PM - Re: CROWBARS? (Charlie England) 11. 05:09 PM - Re: CROWBARS? (user9253) 12. 05:23 PM - Re: Re: CROWBARS? (Charlie England) 13. 07:04 PM - Re: CROWBARS? (user9253) 14. 08:47 PM - Re: Re: CROWBARS? (Charlie England) ________________________________ Message 1 _____________________________________ Time: 04:30:59 AM PST US From: Art Zemon Subject: Re: AeroElectric-List: Y connections Hi Pat, I had much the same issues when I wired my BD-4C. I blogged about my splicing at the bottom of this article on my website: https://cheerfulcurmudgeon.com/2016/07/19/physical-electrical-considerations-when-mounting-avionics/ I found that that worked pretty well for three wires. You will find that technique more specifically written up at http://www.aeroelectric.com/articles/Solder_Lap_Splicing/Solder_Lap_Splices.html Also try Googling "site:aeroelectric.com splice" Cheers, -- Art Z. On Thu, Aug 9, 2018 at 12:58 AM Pat Little wrote: > I am starting to plan out the wiring for a Zenith STOL CH750 that is being > built here in Missoula. I have a good working knowledge of electrical and > electronic stuff, but am not familiar with how things are done in the > aircraft world. The first part of the aircraft wiring I am thinking through > is the wing tip strobe lights. Since both the left and right lights are > controlled by a single switch I need to figure out the right components and > techniques for making a Y connection for the supply voltage lines. It seems > all the "splice" connectors I find online are for joining two wires, not > three. Can someone point me in the right direction? > Thanks, > Pat Little > -- https://CheerfulCurmudgeon.com/ *"We do not see the world as it is. We see the world as we are."* ________________________________ Message 2 _____________________________________ Time: 05:08:20 AM PST US Subject: Re: AeroElectric-List: Y connections From: C&K I would recommend joining the two wires at the connection to the switch. Anything else reduces reliability and complicates future maintenance and upgrades. Unnecessary inline splices can be a red flag for a possible future purchaser. Ken On 09/08/2018 7:30 AM, Art Zemon wrote: > Hi Pat, > > I had much the same issues when I wired my BD-4C. I blogged about my > splicing at the bottom of this article on my website: > https://cheerfulcurmudgeon.com/2016/07/19/physical-electrical-considerations-when-mounting-avionics/ > I found that that worked pretty well for three wires. > > You will find that technique more specifically written up at > http://www.aeroelectric.com/articles/Solder_Lap_Splicing/Solder_Lap_Splices.html > > Also try Googling "site:aeroelectric.com splice" > > Cheers, > -- Art Z. > > > On Thu, Aug 9, 2018 at 12:58 AM Pat Little > wrote: > > I am starting to plan out the wiring for a Zenith STOL CH750 that > is being built here in Missoula. I have a good working knowledge > of electrical and electronic stuff, but am not familiar with how > things are done in the aircraft world. The first part of the > aircraft wiring I am thinking through is the wing tip strobe > lights. Since both the left and right lights are controlled by a > single switch I need to figure out the right components and > techniques for making a Y connection for the supply voltage lines. > It seems all the "splice" connectors I find online are for joining > two wires, not three. Can someone point me in the right direction? > Thanks, > Pat Little > > > -- > https://CheerfulCurmudgeon.com/ > > /"We do not see the world as it is. We see the world as we are."/ ________________________________ Message 3 _____________________________________ Time: 05:48:29 AM PST US Subject: Re: AeroElectric-List: Y connections From: Werner Schneider You could as well go for a switch with a double set of contacts, they do fit in the standard spacing of switches in my plane, no splicing and less load on the contacts. Cheers Werner >> On Thu, Aug 9, 2018 at 12:58 AM Pat Little > > wrote: >> >> I am starting to plan out the wiring for a Zenith STOL CH750 that >> is being built here in Missoula. I have a good working knowledge >> of electrical and electronic stuff, but am not familiar with how >> things are done in the aircraft world. The first part of the >> aircraft wiring I am thinking through is the wing tip strobe >> lights. Since both the left and right lights are controlled by a >> single switch I need to figure out the right components and >> techniques for making a Y connection for the supply voltage lines. >> It seems all the "splice" connectors I find online are for joining >> two wires, not three. Can someone point me in the right direction? >> Thanks, >> Pat Little ________________________________ Message 4 _____________________________________ Time: 07:11:41 AM PST US From: FLYaDIVE Subject: Re: AeroElectric-List: Y connections Pat: You DO NOT make a Y or a T connection. You run separate wires directly to the switch. OMG! All that extra wire? All that extra weight? Yes, that way the common failure point is the switch. And if a wire should fail you still have power to the opposite side. AND you are not doubling the current through a common wire. K.I.S.S. M.E. Barry On Thu, Aug 9, 2018 at 1:48 AM Pat Little wrote: > I am starting to plan out the wiring for a Zenith STOL CH750 that is being > built here in Missoula. I have a good working knowledge of electrical and > electronic stuff, but am not familiar with how things are done in the > aircraft world. The first part of the aircraft wiring I am thinking through > is the wing tip strobe lights. Since both the left and right lights are > controlled by a single switch I need to figure out the right components and > techniques for making a Y connection for the supply voltage lines. It seems > all the "splice" connectors I find online are for joining two wires, not > three. Can someone point me in the right direction? > Thanks, > Pat Little > ________________________________ Message 5 _____________________________________ Time: 09:09:34 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Y connections At 12:42 AM 8/9/2018, you wrote: >I am starting to plan out the wiring for a Zenith STOL CH750 that is >being built here in Missoula. I have a good working knowledge of >electrical and electronic stuff, but am not familiar with how things >are done in the aircraft world. The first part of the aircraft >wiring I am thinking through is the wing tip strobe lights. Since >both the left and right lights are controlled by a single switch I >need to figure out the right components and techniques for making a >Y connection for the supply voltage lines. It seems all the "splice" >connectors I find online are for joining two wires, not three. Can >someone point me in the right direction? >Thanks, >Pat Little https://goo.gl/c85k64 https://goo.gl/FMCY9K https://goo.gl/Lqhv2t Any of the above techniques will do the job . . . Bob . . . ________________________________ Message 6 _____________________________________ Time: 10:27:10 AM PST US From: Pat Little Subject: Re: AeroElectric-List: Y connections Thanks Bob. I like the first one, PIDG-style, and the practical example at the bottom of that page looks like what I will be doing. I have to make an inline splice with 3 #20 wires. Appreciate the quick helpful response. Pat On Thu, Aug 9, 2018 at 10:16 AM Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > At 12:42 AM 8/9/2018, you wrote: > > I am starting to plan out the wiring for a Zenith STOL CH750 that is being > built here in Missoula. I have a good working knowledge of electrical and > electronic stuff, but am not familiar with how things are done in the > aircraft world. The first part of the aircraft wiring I am thinking through > is the wing tip strobe lights. Since both the left and right lights are > controlled by a single switch I need to figure out the right components and > techniques for making a Y connection for the supply voltage lines. It seems > all the "splice" connectors I find online are for joining two wires, not > three. Can someone point me in the right direction? > Thanks, > Pat Little > > > https://goo.gl/c85k64 > > https://goo.gl/FMCY9K > > https://goo.gl/Lqhv2t > > Any of the above techniques will do the job . . . > > > Bob . . . > ________________________________ Message 7 _____________________________________ Time: 12:01:30 PM PST US From: bob noffs Subject: Re: AeroElectric-List: CROWBARS? hi bob, i am trying to do ov protection on a viking 110. b and c would have the ovm blow a breaker and cut off current to coil in a relay. i think i have seen drawings of yours where a contactor is used betweeen alternator and main bus . can you direct me to a drawing that is as simple as you say. any current for relays/ contactors would have to come straight from the alternator. worst case with the honda is that both batteries must be taken off line, leaving the alternator to provide spark. thanks, bob noffs On Thu, Jul 12, 2018 at 7:49 AM, Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > At 05:45 AM 7/12/2018, you wrote: > > well, i guess i should wire in a crowbar. seems like it should be pretty > straight forward to have it break the circuit to the field. i will take a > look in bob's book for ideas and go from there. > > > The crowbar ov protection module can be added to > any system wherein alternator field power is > taken through a typical 5A breaker. The > module is wired from field supply line to > ground at any point downstream of that > breaker. You can find examples in the Z-figures. > > > Bob . . . > ________________________________ Message 8 _____________________________________ Time: 01:46:41 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Y connections At 12:26 PM 8/9/2018, you wrote: >Thanks Bob. I like the first one, PIDG-style, and the practical >example at the bottom of that page looks like what I will be doing. >I have to make an inline splice with 3 #20 wires. Appreciate the >quick helpful response. You'll need a blue pidg splice for that one. They taught us how to do that when I worked at Boeing back in '61 . . . Bob . . . ________________________________ Message 9 _____________________________________ Time: 03:07:52 PM PST US Subject: Re: AeroElectric-List: Y connections From: Charlie England I salvaged about a 10 pound rat's nest of wire that was a very small chunk of an airliner wiring harness. (There's an airliner recycler fairly close to me.) Several ounces of that 10 pounds consisted of crimp splices, fanning a single wire out to two, three, and more wires. Boy, those airliner builders sure are careless, wasteful critters.... On 8/9/2018 9:10 AM, FLYaDIVE wrote: > Pat: > > You DO NOT make a Y or a T connection. You run separate wires > directly to the switch. OMG! All that extra wire? All that extra weight? > > Yes, that way the common failure point is the switch. And if a wire > should fail you still have power to the opposite side. AND you are not > doubling the current through a common wire. > > K.I.S.S. M.E. > > > Barry > > > On Thu, Aug 9, 2018 at 1:48 AM Pat Little > wrote: > > I am starting to plan out the wiring for a Zenith STOL CH750 that > is being built here in Missoula. I have a good working knowledge > of electrical and electronic stuff, but am not familiar with how > things are done in the aircraft world. The first part of the > aircraft wiring I am thinking through is the wing tip strobe > lights. Since both the left and right lights are controlled by a > single switch I need to figure out the right components and > techniques for making a Y connection for the supply voltage lines. > It seems all the "splice" connectors I find online are for joining > two wires, not three. Can someone point me in the right direction? > Thanks, > Pat Little > --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 10 ____________________________________ Time: 03:26:45 PM PST US Subject: Re: AeroElectric-List: CROWBARS? From: Charlie England I'm not (either) Bob, but... I assume you're talking about an internally regulated alternator. If you have a copy of the 'Connection, go to drawing z13/8, 'all electric plane on a budget'. You can copy the circuit shown for the Dynamo (upper right hand and top center of the page). Just erase the dynamo/regulator parts and the filter capacitor, and tie what's labeled as a red wire at the voltage regulator to the B lead of the alternator. Charlie On 8/9/2018 2:00 PM, bob noffs wrote: > hi bob, > i am trying to do ov protection on a viking 110. b and c would have > the ovm blow a breaker and cut off current to coil in a relay. i think > i have seen drawings of yours where a contactor is used betweeen > alternator and main bus . can you direct me to a drawing that is as > simple as you say. any current for relays/ contactors would have to > come straight from the alternator. worst case with the honda is that > both batteries must be taken off line, leaving the alternator to > provide spark. > thanks, bob noffs > > On Thu, Jul 12, 2018 at 7:49 AM, Robert L. Nuckolls, III > > > wrote: > > At 05:45 AM 7/12/2018, you wrote: >> well, i guess i should wire in a crowbar. seems like it should be >> pretty straight forward to have it break the circuit to the >> field. i will take a look in bob's book for ideas and go from there. > > The crowbar ov protection module can be added to > any system wherein alternator field power is > taken through a typical 5A breaker. The > module is wired from field supply line to > ground at any point downstream of that > breaker. You can find examples in the Z-figures. > > > Bob . . . > > --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 11 ____________________________________ Time: 05:09:13 PM PST US Subject: AeroElectric-List: Re: CROWBARS? From: "user9253" Bob Noffs, Here is a link to Bob's drawings: http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/ It is OK to mix and match desired features from different drawings. Z-19 and Z-24 might be useful for you. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=482252#482252 ________________________________ Message 12 ____________________________________ Time: 05:23:55 PM PST US Subject: Re: AeroElectric-List: Re: CROWBARS? From: Charlie England On 8/9/2018 7:08 PM, user9253 wrote: > > Bob Noffs, > Here is a link to Bob's drawings: > http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/ > It is OK to mix and match desired features from different drawings. > Z-19 and Z-24 might be useful for you. > > -------- > Joe Gores That will work if he has a dynamo with the B&C regulator, but that drawing doesn't interrupt the B lead of a regular IR alternator. I don't think he spec'd which alternator he's using. Charlie --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 13 ____________________________________ Time: 07:04:08 PM PST US Subject: AeroElectric-List: Re: CROWBARS? From: "user9253" Z-19 has dual batteries and a single alternator, which is what Bob plans for his Viking. Z-24 has a contactor in series with the alternator "B" lead. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=482256#482256 ________________________________ Message 14 ____________________________________ Time: 08:47:34 PM PST US Subject: Re: AeroElectric-List: Re: CROWBARS? From: Charlie England Oops; my bad. I just opened the 1st doc in that list. Sorry 'bout that. Charlie On 8/9/2018 9:03 PM, user9253 wrote: > > Z-19 has dual batteries and a single alternator, which is what Bob plans for his Viking. Z-24 has a contactor in series with the alternator "B" lead. > > -------- > Joe Gores > --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ------------------------------------------------------------------------------------- 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.