---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 05/23/23: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:09 AM - Fuel Boost Pump ON Annunciator (Mudfly) 2. 08:13 AM - Best Connector for 8awg-12awg fuse link (Jared Yates) 3. 09:34 AM - Re: Best Connector for 8awg-12awg fuse link (Charlie England) 4. 10:35 AM - Re: Best Connector for 8awg-12awg fuse link (Roger&Jean) 5. 10:40 AM - Re: Best Connector for 8awg-12awg fuse link (Jared Yates) 6. 11:06 AM - Re: Best Connector for 8awg-12awg fuse link (Charlie England) 7. 11:39 AM - Re: Overvoltage Protection for Rotax 9-Series Engines (dj_theis) ________________________________ Message 1 _____________________________________ Time: 05:09:44 AM PST US Subject: AeroElectric-List: Fuel Boost Pump ON Annunciator From: "Mudfly" Hello group, I want to wire an LED annunciator light that illuminates when the fuel boost pump switch is selected on. I was planning on making this an "idiot" light that just indicates the switch is on, not that the pump is actually working. I can verify pump operation other ways. My plan is to wire the light directly from the boost pump switch. Input side of the switch will be feed from fuse panel. Output side will have two wires, one to the boost pump and other to LED light. Seems simple but, as usual, I'm sure there may be other issues I'm missing. Here's the annunciator I will be using. https://www.steinair.com/product/green-led-indicator-light-12v/ I have also attached a diagram to show my plan. Sorry it's an attachment. I can't seem to convert the file to an attachable picture. Thanks, Shawn Read this topic online here: http://forums.matronics.com/viewtopic.php?p=510850#510850 Attachments: http://forums.matronics.com//files/fuel_boost_annunciator_672.pdf ________________________________ Message 2 _____________________________________ Time: 08:13:11 AM PST US From: Jared Yates Subject: AeroElectric-List: Best Connector for 8awg-12awg fuse link I'm installing a 40a B&C alternator as a backup in the z101b architecture. I figure I need 8-gauge wire for the b-lead which will make for a 12-gauge fuse link. Is there an elegant connector to use for that 8-12 junction, or should I just solder and heat shrink them? ________________________________ Message 3 _____________________________________ Time: 09:34:41 AM PST US From: Charlie England Subject: Re: AeroElectric-List: Best Connector for 8awg-12awg fuse link On Tue, May 23, 2023 at 10:15=AFAM Jared Yates wrote: > I'm installing a 40a B&C alternator as a backup in the z101b architecture .. > I figure I need 8-gauge wire for the b-lead which will make for a 12-gaug e > fuse link. Is there an elegant connector to use for that 8-12 junction, o r > should I just solder and heat shrink them? > Here's the 1st thing I hit; I just googled '8 gauge to 12 gauge butt splice '. Having said that, IIRC I cheated and shed a few strands from the 8 ga where it entered a yellow 10/12 butt splice (please don't tell anyone). Another option is to use a straight 8 ga butt splice with Bob's trick of jamming in a few 1/2" lengths of solid copper to fill out the fuselink side to 8 ga, but 8 ga splices tend to be bare copper too, which forces the use of heat shrink. Might as well solder & save the search. ;-) All the other butt splice options I found were quite pricey in small quantities. If I hadn't cheated with the 10/12, I'd have soldered. Charlie Virus-free.www.avast.com <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> ________________________________ Message 4 _____________________________________ Time: 10:35:19 AM PST US Subject: Re: AeroElectric-List: Best Connector for 8awg-12awg fuse link From: Roger&Jean If you solder a fuse link, wouldn't the solder melt and possibily separate before the copper fuse link? Roger On May 23, 2023 12:33 PM, Charlie England wrote: > > > On Tue, May 23, 2023 at 10:15AM Jared Yates wrote: >> >> I'm installing a 40a B&C alternator as a backup in the z101b architecture. I figure I need 8-gauge wire for the b-lead which will make for a 12-gauge fuse link. Is there an elegant connector to use for that 8-12 junction, or should I just solder and heat shrink them? > > > Here's the 1st thing I hit; I just googled '8 gauge to 12 gauge butt splice'. > > Having said that, IIRC I cheated and shed a few strands from the 8 ga where it entered a yellow 10/12 butt splice (please don't tell anyone). Another option is to use a straight 8 ga butt splice with Bob's trick of jamming in a few 1/2" lengths of solid copper to fill out the fuselinkside to 8 ga, but 8 ga splicestend to be bare copper too, which forces the use of heat shrink. Might as well solder & save the search. ;-) > > All the other butt splice options I found were quite pricey in small quantities. If I hadn't cheated with the 10/12, I'd have soldered. > > Charlie > > Virus-free.www.avast.com ________________________________ Message 5 _____________________________________ Time: 10:40:56 AM PST US From: Jared Yates Subject: Re: AeroElectric-List: Best Connector for 8awg-12awg fuse link Good thinking, if that happens, do I want it to happen? On Tue, May 23, 2023, 13:39 Roger&Jean wrote: t > > > > If you solder a fuse link, wouldn't the solder melt and possibily separat e > before the copper fuse link? > > Roger > > On May 23, 2023 12:33 PM, Charlie England wrote: > > > > > > > > On Tue, May 23, 2023 at 10:15=AFAM Jared Yates > wrote: > >> > >> I'm installing a 40a B&C alternator as a backup in the z101b > architecture. I figure I need 8-gauge wire for the b-lead which will make > for a 12-gauge fuse link. Is there an elegant connector to use for that > 8-12 junction, or should I just solder and heat shrink them? > > > > > > Here's the 1st thing I hit; I just googled '8 gauge to 12 gauge butt > splice'. > > > > Having said that, IIRC I cheated and shed a few strands from the 8 ga > where it entered a yellow 10/12 butt splice (please don't tell anyone). > Another option is to use a straight 8 ga butt splice with Bob's trick of > jamming in a few 1/2" lengths of solid copper to fill out the fuselink si de > to 8 ga, but 8 ga splices tend to be bare copper too, which forces the us e > of heat shrink. Might as well solder & save the search. ;-) > > > > All the other butt splice options I found were quite pricey in small > quantities. If I hadn't cheated with the 10/12, I'd have soldered. > > > > Charlie > > > > Virus-free.www.avast.com > =========== =========== =========== =========== =========== > > ________________________________ Message 6 _____________________________________ Time: 11:06:24 AM PST US Subject: Re: AeroElectric-List: Best Connector for 8awg-12awg fuse link From: Charlie England Fusible links typically open at the middle of the run of link wire. The closer you get to either end, the more 'heat sink' effect you get from the bigger wire or the hardware on each end. Besides, if the wire's hot enough to melt solder (>360 degrees), you want something to open up. ;-) On 5/23/2023 12:41 PM, Jared Yates wrote: > Good thinking, if that happens, do I want it to happen? > > On Tue, May 23, 2023, 13:39 Roger&Jean wrote: > > > > If you solder a fuse link, wouldn't the solder melt and possibily > separate before the copper fuse link? > > Roger > > On May 23, 2023 12:33 PM, Charlie England > wrote: > > > > > > > > On Tue, May 23, 2023 at 10:15AM Jared Yates > wrote: > >> > >> I'm installing a 40a B&C alternator as a backup in the z101b > architecture. I figure I need 8-gauge wire for the b-lead which > will make for a 12-gauge fuse link. Is there an elegant connector > to use for that 8-12 junction, or should I just solder and heat > shrink them? > > > > > > Here's the 1st thing I hit; I just googled '8 gauge to 12 gauge > butt splice'. > > > > Having said that, IIRC I cheated and shed a few strands from the > 8 ga where it entered a yellow 10/12 butt splice (please don't > tell anyone). Another option is to use a straight 8 ga butt splice > with Bob's trick of jamming in a few 1/2" lengths of solid copper > to fill out the fuselinkside to 8 ga, but 8 ga splicestend to be > bare copper too, which forces the use of heat shrink. Might as > well solder & save the search. ;-) > > > > All the other butt splice options I found were quite pricey in > small quantities. If I hadn't cheated with the 10/12, I'd have > soldered. > > > > Charlie > > > > Virus-free.www.avast.com > > ========== > - > Electric-List" rel="noreferrer noreferrer" > target="_blank">http://www.matronics.com/Navigator?AeroElectric-List > ========== > FORUMS - > eferrer noreferrer" target="_blank">http://forums.matronics.com > ========== > WIKI - > errer noreferrer" target="_blank">http://wiki.matronics.com > ========== > b Site - > -Matt Dralle, List Admin. > ="noreferrer noreferrer" > target="_blank">https://matronics.com/contribution > ========== > > -- This email has been checked for viruses by Avast antivirus software. www.avast.com ________________________________ Message 7 _____________________________________ Time: 11:39:01 AM PST US Subject: AeroElectric-List: Re: Overvoltage Protection for Rotax 9-Series Engines From: "dj_theis" Nice design Eric. In particular, I appreciate your use and reasoning behind switching the AC side of the charge circuit. Reliable switching of higher current DC generally requires relays that are expensive and bulky. I think it will require someone of Bob's caliber to catch any shortcomings in your work. Like Joe implies, you are you are punching well above your weight class. -------- Dan Theis Scratch building Sonex #1362 Still working on the Revmaster Alternator improvement Read this topic online here: http://forums.matronics.com/viewtopic.php?p=510857#510857 ------------------------------------------------------------------------------------- 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.