---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Mon 03/27/06: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:59 AM - Re: Denso Alternator Hook-up () 2. 04:19 AM - Off, R, L, Both, Start switch () 3. 07:18 AM - wing tip HID lights and lenses (Ron Patterson) 4. 07:18 AM - wiring starter and mag switches for Left on / Right off (Ron Patterson) 5. 08:35 AM - Switching (Sam Marlow) 6. 11:24 AM - Re: Switching (Peter Laurence) 7. 11:54 AM - Re: Re: Battery Cranking Power (Robert L. Nuckolls, III) 8. 12:42 PM - Re: Re: Battery Cranking Power (Bill Dube) 9. 03:31 PM - Re: wiring starter and mag switches for Left on / Right off (Robert L. Nuckolls, III) 10. 03:31 PM - Re: Off, R, L, Both, Start switch (Robert L. Nuckolls, III) 11. 08:10 PM - Z-13 Component Locations for RV-7 (PIAVIS) ________________________________ Message 1 _____________________________________ Time: 01:59:41 AM PST US From: Subject: AeroElectric-List: Re: Denso Alternator Hook-up --> AeroElectric-List message posted by: Peter: It would be good to have a part number but I think I got it. When you say wire protruding I assume from a "T" shape plug. Some more info: http://img116.imageshack.us/img116/3039/altwiring5cm.jpg (Ignore the round plug, the D terminal is a Dummy terminal for the model shown) http://img110.imageshack.us/img110/9978/toyota7gf.jpg (Shown for refrence only, slightly modified Toyota diagram, it shows fuse and fusible links with the wavy line or lines respectively. You can and should sub in CB's in some locations.) Yes a CB on the "B-lead" (Battery lead the big heavy gage wire from the alternator output to the battery. It is NOT one of the two small wires in the plug. The CB should be of the type that can be pulled manually, that is my suggestion. It just allows you another way to isolate the alternator if needed.) Time: 02:09:36 PM PST US From: "'Peter Braswell'" Subject: AeroElectric-List: Denso Alternator Hook-up --> AeroElectric-List message posted by: "'Peter Braswell'" All, I'm certain this is going to be a 101 question, forgive me. I'm about to hookup my Denso alternator and it has two wires protruding from the back, one labeled 'L' and the other labeled 'I'. I'm certain one is for the "idiot light" and the other should be the input for 12V and I'm no certain which is which. Any help would be greatly appreciated! -peter Peter J. Braswell CTO/CIO Canal Capital LLC 804.934.0300 ext 21 --------------------------------- ________________________________ Message 2 _____________________________________ Time: 04:19:01 AM PST US From: Cc: Subject: AeroElectric-List: Off, R, L, Both, Start switch --> AeroElectric-List message posted by: 3/27/2006 Hello Guy, So you want to take this notoriously fickle switch, (see this web page for example//http://www.avweb.com/news/columns/191792-1.html), modify it, and put it into your electronic ignition circuits where a single point failure can render both of your electronic ignitions inoperative. Why would you want to do that? OC Time: 09:09:56 PM PST US From: guy fulton Subject: AeroElectric-List: Off, R, L, Both, Start switch --> AeroElectric-List message posted by: guy fulton -=Guy=- I converted to Dual electronic ignition 2years ago, now am doing a complete dash replacment. Now use a series of toggle switches for each of the two ignition systems. I wanted to use a standard aircraft ignition switch but it works opposite of what is needed for electronic ignition. Is there an aircraft switch manufactured that would work with the electronic ignition? Is there a modification I could make to a standard switch that would work? thanks for any help. ________________________________ Message 3 _____________________________________ Time: 07:18:07 AM PST US From: Ron Patterson Subject: AeroElectric-List: wing tip HID lights and lenses --> AeroElectric-List message posted by: Ron Patterson anyone know a good source for small bulkheads and lenses for the RV-4 wintips? I'm using creative air landinig lights but they don't sell the 110 degree bulkheads or plexiglass lenses. Thanks Ron Patterson N8ZD@yahoo.com ________________________________ Message 4 _____________________________________ Time: 07:18:07 AM PST US From: Ron Patterson Subject: AeroElectric-List: wiring starter and mag switches for Left on / Right off --> AeroElectric-List message posted by: Ron Patterson Can someone point me to the description or schematic of how to wire my mag switches so that when the right mag is ON the starter will not engage? I'm trying to avoid a seperate starter on/off switch Thanks Ron Patterson N8ZD@yahoo.com ________________________________ Message 5 _____________________________________ Time: 08:35:10 AM PST US From: Sam Marlow Subject: AeroElectric-List: Switching --> AeroElectric-List message posted by: Sam Marlow Just wondered if anyone has any experience with the Power Board from Blue Mountain. It has a nice switch arrangement for lighted, engraved low voltage switches that really look nice. I'm a bit concerned about reliability though. Any thoughts? ________________________________ Message 6 _____________________________________ Time: 11:24:14 AM PST US From: " Peter Laurence" Subject: Re: AeroElectric-List: Switching --> AeroElectric-List message posted by: " Peter Laurence" Sam I'm not familiar with this switchboard. However, If the switches are soldered to a board and a crtical one fails, you might be stuck while you wait for a replacement. . I'd stick with Carling toggles. A trip to the local hardware store would get you home. Ask me how I know this. Peter > > Just wondered if anyone has any experience with the Power Board from > Blue Mountain. It has a nice switch arrangement for lighted, engraved > low voltage switches that really look nice. I'm a bit concerned about > reliability though. Any thoughts? > > > ________________________________ Message 7 _____________________________________ Time: 11:54:47 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Battery Cranking Power --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" At 09:51 AM 3/26/2006 -0500, you wrote: >--> AeroElectric-List message posted by: "Mark Neubauer" > >Brian: > >You have hit the problem on the head. A serious drawback to the SkyTec >starters is their very high current draw on each compression stroke. I >believe it is entirely possible that your starter is indeed drawing 400 amps >twice per engine revolution. It was for this reason, and using dual >Lightspeed III ignition systems, that I swapped my SkyTec over to a field >wound starter. They weigh more, but their cranking current is around half of >the series wound models. High current draw like this will pull the battery >voltage way down as you measured > >As a footnote, I discussed this phenomenon with a representative from SkyTec >at Oshkosh in 2004. He could not have been more evasive and curt. I believe >his response to my query was something like "Cranking current is not our >concern, that is the airframe manufacturer's problem" > >Mark Neubauer This is precisely why B&C stayed with wound-field starters after considerable evaluation of the simpler technology many years ago. The PM starters may indeed put out more torque at a given terminal voltage but at higher current draws too (you don't get something for nothing). You can take advantage of this feature only if your battery's internal resistance combined with the system's series resitance is sufficiently low to deliver the power demand. Yes, it is the manufacturer's problem to deal with the hardware they select for integration into their products . . . unfortunately, few folks in the airframe systems business choose to be very well informed. Bob . . . < What is so wonderful about scientific truth...is that > < the authority which determines whether there can be > < debate or not does not reside in some fraternity of > < scientists; nor is it divine. The authority rests > < with experiment. > < --Lawrence M. Krauss > ________________________________ Message 8 _____________________________________ Time: 12:42:46 PM PST US From: Bill Dube Subject: Re: AeroElectric-List: Re: Battery Cranking Power --> AeroElectric-List message posted by: Bill Dube The PM starters will try to run at a specific RPM. They will draw the current needed to do that, or they will sag the battery voltage trying to do it. If the engine turns hard, they will draw a very large current. If the engine turns easy, they will draw much less current. (The PM starter RPM will be proportional to the supply voltage.) The behavior of a series-wound starter is more complicated, but they tend to put out a constant HP (rather than a constant speed.) They run faster if the engine turns easier, and turn slower if the engine turns harder. The current draw from the battery tends to be much more constant than with a PM starter. Bill Dube' ________________________________ Message 9 _____________________________________ Time: 03:31:39 PM PST US From: "Robert L. Nuckolls, III" Left on / Right off Subject: Re: AeroElectric-List: wiring starter and mag switches for Left on / Right off --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" Left on / Right off At 07:11 AM 3/27/2006 -0800, you wrote: >--> AeroElectric-List message posted by: Ron Patterson > >Can someone point me to the description or schematic of how to wire my mag >switches so that when the right mag is ON the starter will not engage? I'm >trying to avoid a seperate starter on/off switch > Thanks > Ron Patterson > N8ZD@yahoo.com See http://www.aeroelectric.com/PPS/Engine/Ignition/TogMagSw.pdf Bob . . . ________________________________ Message 10 ____________________________________ Time: 03:31:39 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Off, R, L, Both, Start switch --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" At 09:02 PM 3/26/2006 -0800, you wrote: >--> AeroElectric-List message posted by: guy fulton > >-=Guy=- >I converted to Dual electronic ignition 2years ago, >now am doing a complete dash replacment. Now use a >series of toggle switches for each of the two ignition >systems. I wanted to use a standard aircraft ignition >switch but it works opposite of what is needed for >electronic ignition. Is there an aircraft switch >manufactured that would work with the electronic >ignition? Is there a modification I could make to a >standard switch that would work? >thanks for any help. Not all electronic ignitions use the same switching philosophies. I believe Lightspeed is designed to mimic magneto switching functions so as to seamlessly integrate with the classic off-l-r-both-start type mag switch. Also, the next greatest system (e-mags/p-mags) will also use this style of switch if you so choose. Bob . . . ________________________________ Message 11 ____________________________________ Time: 08:10:28 PM PST US From: "PIAVIS" Subject: AeroElectric-List: Z-13 Component Locations for RV-7 --> AeroElectric-List message posted by: "PIAVIS" I'm starting to figure out where all the components for the Z-13 system get located in my RV-7. I'm tempted to have everything except the main current limiter and the battery/starter contactors on the hot side of the firewall, with everything else on the cold side. Is this how most have installed the system? Thanks, Jim Jim Piavis Redmond, WA RV-7 Fuselage http://adap.com/rv7