---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 04/29/07: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:41 AM - SELF EXCITING DUAL POWER SUPPLY WITH OCM (Peter Harris) 2. 02:36 AM - Re: SELF EXCITING DUAL POWER SUPPLY WITH OCM (Gilles Thesee) 3. 07:56 AM - 12v supply to stabilize avionics (bob mackey) 4. 08:23 AM - Re: HID lights (Dr. Andrew Elliott) 5. 09:12 AM - Re: Re: HID lights (Steve Thomas) 6. 12:37 PM - Re: 12v supply to stabilize avionics (Jerry2DT@aol.com) 7. 01:48 PM - Z-13/20 Questions (Aaron Gleixner) 8. 02:53 PM - Re: SELF EXCITING DUAL POWER SUPPLY WITH OCM (Peter Harris) 9. 03:28 PM - Re: Re: HID lights (rtitsworth) 10. 04:49 PM - Re: Re: HID lights (Alan Adamson) ________________________________ Message 1 _____________________________________ Time: 12:41:25 AM PST US From: "Peter Harris" Subject: AeroElectric-List: SELF EXCITING DUAL POWER SUPPLY WITH OCM Hi again, more questions, As a newbie I get to make my share of mistakes. I have taken the liberty to modify Z-25 to show an over current module and a dual power outlet for the essential bus and I would welcome some guidance along the following lines: 1. The OCM item A I inherited from another project, a Norton rotary engine install with 3 phase solid state regulator rectifier. It is supposed to protect against over current from a short in the alternator or on the battery side. Question : Should I keep it ? Is it in the right place ? 2. Is the dual alternate feed path for the dual supply to eBus OK ? It should supply from the self excited PM alternator/regulator, or from the battery, or both (normally both) Should those two switches be protected ? How ? 3. Should I consider a switching sequence for start up and shut down ? Details? If you read this far you will know that I have just enough knowhow to get into trouble and I would appreciate any comments. If the html diagram does not post below I will set it up in the pictures section. Thanks Peter ________________________________ Message 2 _____________________________________ Time: 02:36:02 AM PST US From: Gilles Thesee Subject: Re: AeroElectric-List: SELF EXCITING DUAL POWER SUPPLY WITH OCM Peter, > 1. The OCM item A I inherited from another project, > a Norton rotary engine install with 3 phase solid state regulator > rectifier. It is supposed to protect against over current from a short > in the alternator or on the battery side. Question : Should I keep it ? > Your diagram already shows a fuselink. With your setup I would install it direct at the battery positive post. I always choose the simplest, lightest, least expensive device. This module seems to include a 30 amp CB. This means running a fat wire from the battery + to the intended location. > 2. Is the dual alternate feed path for the dual > supply to eBus OK ? It should supply from the self excited PM > alternator/regulator, or from the battery, or both (normally both) > That's a lot of switches to manage. What purpose did you say the dual E-bus supply was for ? > Should those two switches be protected ? How ? > I would protect the E-bus alt feed with a fuselink or something direct at the battery. > 3. Should I consider a switching sequence for start > up and shut down ? Details? > Since those switches are "alternate feedpath", I would leave them always open except in case of alternator loss (real or simulated). In that case, I'm trying to figure out why you would need the "direct from alternator" path ? Especially if you decide not to (or forget to) close the alternator switch. Please note that the OV module will only work when the alternator switch is closed. In a worst case situation, you may well fry your avionics while attempting to sort out an OV event and closing the wrong switch. Better leave this "alternate alternate" out. The Jabiru is a simple engine. If it were up to me, I'd control the alternator through the master switch, a' la figure Z16. Best regards, Gilles http://contrails.free.fr > > ________________________________ Message 3 _____________________________________ Time: 07:56:39 AM PST US Subject: AeroElectric-List: 12v supply to stabilize avionics From: "bob mackey" As Bob Nuchols surmised, this is lighter weight than a second battery -- 0.1 lbs plus wiring. It uses an Linear LTC3780. http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1042,C1116,P10090 The spec sheet for the 12V supply is attached. -bob mackey ________________________________ Message 4 _____________________________________ Time: 08:23:13 AM PST US From: "Dr. Andrew Elliott" Subject: AeroElectric-List: Re: HID lights I don't know if your idea to "roll your own" is for fun, but I recently purchased a pair of Xenarc X1010 fog/driving lights from suvlights.com. These use D1S bulbs. They come with the diffuser installed for fogs, but this can be easily removed (instructions on the web site) to make one fog and one driving light. They are available in both 4250K and 5400K colors as you like. They come set up for wireless remote switching, but can be wired for regular switches if you like. All in all, a fiarly nice set up. Cost is only $348 for a pair with all the wiring, etc. I haven't installed them yet, but plan is for a leading edge cut-out and plexiglass window. These lights are astoundingly bright if you are used to 4509's! FWIW, Andy Elliott, Mesa, AZ N601GE (reserved) 601XL/TD/QB, Corvair, building... ________________________________ Message 5 _____________________________________ Time: 09:12:03 AM PST US From: Steve Thomas Subject: Re: AeroElectric-List: Re: HID lights Can these lights be wired to operate independently? I.e., turn on one at a time using separate switches? Best Regards, Steve ____________________________________________________________________ On Apr 29, 2007, at 8:21 AM, Dr. Andrew Elliott wrote: > I don't know if your idea to "roll your own" is for fun, but I > recently purchased a pair of Xenarc X1010 fog/driving lights from > suvlights.com. These use D1S bulbs. They come with the diffuser > installed for fogs, but this can be easily removed (instructions on > the web site) to make one fog and one driving light. They are > available in both 4250K and 5400K colors as you like. They come > set up for wireless remote switching, but can be wired for regular > switches if you like. All in all, a fiarly nice set up. Cost is > only $348 for a pair with all the wiring, etc. > > I haven't installed them yet, but plan is for a leading edge cut- > out and plexiglass window. These lights are astoundingly bright if > you are used to 4509's! > > FWIW, > Andy Elliott, Mesa, AZ > N601GE (reserved) > 601XL/TD/QB, Corvair, building... > forums.matronics.com_- > =========================================================== > ________________________________ Message 6 _____________________________________ Time: 12:37:28 PM PST US From: Jerry2DT@aol.com Subject: AeroElectric-List: Re: 12v supply to stabilize avionics That's what I did for my GRT EFIS brownout/reboot problem. I installed a hi-qual switch. If that switch ever fails, I have one radio, GPS and Dynon still good. But what are the odds? Now I just do an engine start, then flip R mag, Alternator, and Avionix switches on. Slick, and no pesky and long rebooting of GRT. BTW, my Skytec spins the XP-IO360 like crazy from a 4 yr old PC680 Batt. I know, Bob, I should replace it every year, but I'm VFR and cheap... Jerry Cochran From: Subject: AeroElectric-List: Re: 12v supply to stabilize avionics How about turn the avionics off during start with a avionics master switch? How about a more efficient starter (NL skytec), bigger starter wire and stronger battery? Good luck but sounds like more complication than necessary. Of course the aeroelectric way is more complication and weight, always good. George ************************************** See what's free at http://www.aol.com. ________________________________ Message 7 _____________________________________ Time: 01:48:22 PM PST US From: Aaron Gleixner Subject: AeroElectric-List: Z-13/20 Questions I'm planning the electrical system for my RV-10, and really like the layout of the Z-13/8 system, but want the extra power of the SD-20. I originally was looking at the Z-12 layout, but didn't like 1) Single point failure of battery contactor leaves you running endurance bus on battery only, and 2) in the event of main alternator failure, I want to quickly switch to a large endurance bus and not have to start turning off loads individually on the main bus if I'm over 20 Amps. My question is why can't I use the Z-13/8 layout, and simply increase the size of the e-bus fuse on the main battery bus to 20 amps, and us an e-bus alternate feed switch that could handle 20 maps. The alternator field for the backup alternator could be run from the e-bus. It eliminates the S701-1 e-bus contactor which adds a lot of wire runs for the RV-10 with battery in the tail. Seems like a simple solution, what am I missing? ________________________________ Message 8 _____________________________________ Time: 02:53:22 PM PST US From: "Peter Harris" Subject: RE: AeroElectric-List: SELF EXCITING DUAL POWER SUPPLY WITH OCM Thanks Gilles, The principle is to make use of the self excitation feature to make a dual power supply that would work either from the battery or from the alternator or both. I am planning to fit EFI to the Jabiru 3300. Re 1. Suppose I would quit the fuse link in favour of the OCM which automatically resets. ? It could be relocated closer to the battery. 2. The dual ebus is for the EFI covering an ECU and a fuel pump. It could also supply a single electronic ignition module and I would plan for say 8A I was planning to leave those switches normally closed and opened only if for some reason I wanted to isolate from either the battery or the alternator. Ie that is not an alternative path it is for the sole supply for the EFI. 3. I overlooked the need for the alt relay to be closed. I would want to connect that line to the alternator side of the alt relay and protect it? What do you think? Thanks for the help. Peter -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Gilles Thesee Sent: Sunday, 29 April 2007 7:35 PM Subject: Re: AeroElectric-List: SELF EXCITING DUAL POWER SUPPLY WITH OCM Peter, > 1. The OCM item A I inherited from another project, > a Norton rotary engine install with 3 phase solid state regulator > rectifier. It is supposed to protect against over current from a short > in the alternator or on the battery side. Question : Should I keep it ? > Your diagram already shows a fuselink. With your setup I would install it direct at the battery positive post. I always choose the simplest, lightest, least expensive device. This module seems to include a 30 amp CB. This means running a fat wire from the battery + to the intended location. > 2. Is the dual alternate feed path for the dual > supply to eBus OK ? It should supply from the self excited PM > alternator/regulator, or from the battery, or both (normally both) > That's a lot of switches to manage. What purpose did you say the dual E-bus supply was for ? > Should those two switches be protected ? How ? > I would protect the E-bus alt feed with a fuselink or something direct at the battery. > 3. Should I consider a switching sequence for start > up and shut down ? Details? > Since those switches are "alternate feedpath", I would leave them always open except in case of alternator loss (real or simulated). In that case, I'm trying to figure out why you would need the "direct from alternator" path ? Especially if you decide not to (or forget to) close the alternator switch. Please note that the OV module will only work when the alternator switch is closed. In a worst case situation, you may well fry your avionics while attempting to sort out an OV event and closing the wrong switch. Better leave this "alternate alternate" out. The Jabiru is a simple engine. If it were up to me, I'd control the alternator through the master switch, a' la figure Z16. Best regards, Gilles http://contrails.free.fr > > ________________________________ Message 9 _____________________________________ Time: 03:28:53 PM PST US From: "rtitsworth" Subject: RE: AeroElectric-List: Re: HID lights Do your HID lights from SUVLights.com include any voltage specs? I need 24-28V. Most auto lights are of course 12V. However, rumor has it that some/many HID ballasts work over a wide voltage range (i.e. 12-30V). Just curious. I'd buy the same ones you have if they'd work with 24-28V. Rick _____ From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Dr. Andrew Elliott Sent: Sunday, April 29, 2007 11:22 AM Subject: AeroElectric-List: Re: HID lights I don't know if your idea to "roll your own" is for fun, but I recently purchased a pair of Xenarc X1010 fog/driving lights from suvlights.com. These use D1S bulbs. They come with the diffuser installed for fogs, but this can be easily removed (instructions on the web site) to make one fog and one driving light. They are available in both 4250K and 5400K colors as you like. They come set up for wireless remote switching, but can be wired for regular switches if you like. All in all, a fiarly nice set up. Cost is only $348 for a pair with all the wiring, etc. I haven't installed them yet, but plan is for a leading edge cut-out and plexiglass window. These lights are astoundingly bright if you are used to 4509's! FWIW, Andy Elliott, Mesa, AZ N601GE (reserved) 601XL/TD/QB, Corvair, building... ________________________________ Message 10 ____________________________________ Time: 04:49:38 PM PST US From: "Alan Adamson" Subject: RE: AeroElectric-List: Re: HID lights Rick, I know exactly what you need... Did you get by the Preciseflight booth at SNF, they have 12 and 24v HID's. In fact, in the case of the Legacy, they even make ones that fit exactly in the wing mount. Mine are on the way :)... Now, they aren't cheap like Auto ones, but I wanted 24V and have found them only a handful of places... I did get the Show special at least... Alan _____ From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of rtitsworth Sent: Sunday, April 29, 2007 6:28 PM Subject: RE: AeroElectric-List: Re: HID lights Do your HID lights from SUVLights.com include any voltage specs? I need 24-28V. Most auto lights are of course 12V. However, rumor has it that some/many HID ballasts work over a wide voltage range (i.e. 12-30V). Just curious. I'd buy the same ones you have if they'd work with 24-28V. Rick _____ From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Dr. Andrew Elliott Sent: Sunday, April 29, 2007 11:22 AM Subject: AeroElectric-List: Re: HID lights I don't know if your idea to "roll your own" is for fun, but I recently purchased a pair of Xenarc X1010 fog/driving lights from suvlights.com. These use D1S bulbs. They come with the diffuser installed for fogs, but this can be easily removed (instructions on the web site) to make one fog and one driving light. They are available in both 4250K and 5400K colors as you like. They come set up for wireless remote switching, but can be wired for regular switches if you like. All in all, a fiarly nice set up. Cost is only $348 for a pair with all the wiring, etc. I haven't installed them yet, but plan is for a leading edge cut-out and plexiglass window. These lights are astoundingly bright if you are used to 4509's! FWIW, Andy Elliott, Mesa, AZ N601GE (reserved) 601XL/TD/QB, Corvair, building... : ------------------------------------------------------------------------------------- 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.