---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sun 01/06/08: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:12 AM - Re: Low voltage problem- new 912ULS (Icrashrc@aol.com) 2. 04:30 AM - Re: Low voltage problem- new 912ULS (Gilles Thesee) 3. 06:37 AM - Re: Low voltage problem- new 912ULS (Jack Kuehn) 4. 07:22 AM - Re: Low voltage problem- new 912ULS (rampil) 5. 07:23 AM - Re: 912 EFI kit (alex_01) 6. 08:06 AM - Re: Re: 912 EFI kit (Jack Kuehn) 7. 10:27 AM - Re: Low voltage problem- new 912ULS (Les Goldner) 8. 10:42 AM - Re: Re: Low voltage problem- new 912ULS (Les Goldner) 9. 11:14 AM - Re: Low voltage problem- new 912ULS (Paul Kuntz) 10. 01:06 PM - Re: Low voltage problem- new 912ULS (Joe Ronco) 11. 01:40 PM - Ignition trouble shooting on 582 (Renaud) ________________________________ Message 1 _____________________________________ Time: 04:12:25 AM PST US From: Icrashrc@aol.com Subject: Re: RotaxEngines-List: Low voltage problem- new 912ULS I would love to be able to look over that schematic but i don't have a program to open it. Is there a free program online to read that type of file? Thanks, Scott _www.ill-EagleAviation.com_ (http://www.ill-EagleAviation.com) Do Not Archive ____________________________________________________________________________ If you have experienced and solved the following problem pls let me know. My 912ULS was sitting unopened for 3-years before I installed it in my new Zenith 701 but works well. My battery is new. I followed Aeroelectric's 912 wiring diagram, which included a low voltage warning light that triggers at 12.5V (if you have a CAD program you can look the diagram at _http://www.aeroelectric.com/PPS/ACAD_Architecture_Dwgs/Z16L.dwg._ (http://www.aeroelectric.com/PPS/ACAD_Architecture_Dwgs/Z16L.dwg.) ) When I fly the plane, the low voltage warning light comes on as soon as I turn on anything requiring more than minimal power consumption (like the strobes) and the new battery voltage is lower after I land than it was before take off. Since the battery is draining in flight, the assumption is that the 912 alternator or voltage regulator is malfunctioning. I need to know if anyone else has experienced this situation, what was done to fix it, how to isolate and fix the problem, etc. Any help would be appreciated. Regards, Les **************Start the year off right. Easy ways to stay in shape. http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489 ________________________________ Message 2 _____________________________________ Time: 04:30:03 AM PST US From: Gilles Thesee Subject: Re: RotaxEngines-List: Low voltage problem- new 912ULS Icrashrc@aol.com a crit : > I would love to be able to look over that schematic but i don't have a > program to open it. Is there a free program online to read that type > of file? > http://www.solidworks.com/pages/products/edrawings/viewer.html Also, the Z drawings are downloadable in .pdf format in the Appendix Z on www.aeroelectric.com Best regards, -- Gilles http://contrails.free.fr ________________________________ Message 3 _____________________________________ Time: 06:37:05 AM PST US From: "Jack Kuehn" Subject: Re: RotaxEngines-List: Low voltage problem- new 912ULS Are you sure your electrical system has a LOW voltage sensor? I also used Bob Nichols 912 wiring diagram, and he suggests the use of his OVER voltage protector circuit, which consists of an over voltage sensor of his design, and a relay that shuts down the regulator if voltage gets too high. This system operates when you turn on the master, and then is totally transparent unless the regulator goes nuts and goes full tilt, which apparently it can do. I wonder if you don't have the OV system and you are getting a high voltage situation which shuts down your charging system. The other really nice thing about Bob's system is that he wires the Master switch so that nothing else can operate unless the Master is on, including the starter. Jack On Jan 6, 2008 5:11 AM, wrote: > > > I would love to be able to look over that schematic but i don't have a > program to open it. Is there a free program online to read that type of > file? > > Thanks, > > Scott > www.ill-EagleAviation.com > > Do Not Archive > ____________________________________________________________________________ > > If you have experienced and solved the following problem pls let me know. > > My 912ULS was sitting unopened for 3-years before I installed it in my > new > Zenith 701 but works well. My battery is new. I followed > Aeroelectric's 912 > wiring diagram, which included a low voltage warning light that > triggers at > 12.5V (if you have a CAD program you can look the diagram at > http://www.aeroelectric.com/PPS/ACAD_Architecture_Dwgs/Z16L.dwg.) When > I fly > the plane, the low voltage warning light comes on as soon as I turn on > anything requiring more than minimal power consumption (like the > strobes) > and the new battery voltage is lower after I land than it was before > take > off. Since the battery is draining in flight, the assumption is that > the 912 > alternator or voltage regulator is malfunctioning. > > I need to know if anyone else has experienced this situation, what was > done > to fix it, how to isolate and fix the problem, etc. Any help would be > appreciated. > > Regards, > Les > > > ________________________________ > Start the year off right. Easy ways to stay in shape in the new year. > > -- Jack Kuehn 5565 Brady Ln Lolo, MT USA 59847 (406)273-6801 (406)546-1086 cell jack.kuehn@gmail.com (406)273-2563 fax ________________________________ Message 4 _____________________________________ Time: 07:22:17 AM PST US Subject: RotaxEngines-List: Re: Low voltage problem- new 912ULS From: "rampil" Without additional info, it does sound like a low voltage condition. Not Hi. Increasing load drops supply voltage. QED. Nuckolls does in fact make a low voltage sensor he calls the low-voltage battery minder circuit which I use to transfer my EFIS to a spare battery if the alternators drop off line in my Europa. Definitely check all connections with an ohm meter if possible because you may not see corrosion in crimps or contacts. Ground the regulator module directly to the engine block with heavy wire. The L lead (alt warn lamp) lead on the regulator is not mandatory and the Nuckolls module which replaces it is smarter. Definitely measure the bus voltage where the alternator joins the bus after the contactor and on the actual bus after the diodes etc. -------- Ira N224XS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=156311#156311 ________________________________ Message 5 _____________________________________ Time: 07:23:03 AM PST US Subject: RotaxEngines-List: Re: 912 EFI kit From: "alex_01" hi, here is a kit ready to go http://www.silent-hektik.com/UL_912_1.htm Read this topic online here: http://forums.matronics.com/viewtopic.php?p=156312#156312 ________________________________ Message 6 _____________________________________ Time: 08:06:16 AM PST US From: "Jack Kuehn" Subject: Re: RotaxEngines-List: Re: 912 EFI kit This site is in German, which I don't read too well, unfortunately. What is it, it looks really interesting! On Jan 6, 2008 8:22 AM, alex_01 wrote: > > hi, > > here is a kit ready to go > > http://www.silent-hektik.com/UL_912_1.htm > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=156312#156312 > > -- Jack Kuehn 5565 Brady Ln Lolo, MT USA 59847 (406)273-6801 (406)546-1086 cell jack.kuehn@gmail.com (406)273-2563 fax ________________________________ Message 7 _____________________________________ Time: 10:27:35 AM PST US From: "Les Goldner" Subject: RE: RotaxEngines-List: Low voltage problem- new 912ULS I will send anyone who can't read the schematic drawing a Adobe PDF file. If you can't read it let me know and I will send a jpg. Regards, Les _____ From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Icrashrc@aol.com Sent: Sunday, January 06, 2008 4:12 AM Subject: Re: RotaxEngines-List: Low voltage problem- new 912ULS I would love to be able to look over that schematic but i don't have a program to open it. Is there a free program online to read that type of file? Thanks, Scott www.ill-EagleAviation.com Do Not Archive ____________________________________________________________________________ If you have experienced and solved the following problem pls let me know. My 912ULS was sitting unopened for 3-years before I installed it in my new Zenith 701 but works well. My battery is new. I followed Aeroelectric's 912 wiring diagram, which included a low voltage warning light that triggers at 12.5V (if you have a CAD program you can look the diagram at http://www.aeroelectric.com/PPS/ACAD_Architecture_Dwgs/Z16L.dwg.) When I fly the plane, the low voltage warning light comes on as soon as I turn on anything requiring more than minimal power consumption (like the strobes) and the new battery voltage is lower after I land than it was before take off. Since the battery is draining in flight, the assumption is that the 912 alternator or voltage regulator is malfunctioning. I need to know if anyone else has experienced this situation, what was done to fix it, how to isolate and fix the problem, etc. Any help would be appreciated. Regards, Les _____ Start the year off right. Easy ways to stay in shape in the new year. ________________________________ Message 8 _____________________________________ Time: 10:42:47 AM PST US From: "Les Goldner" Subject: RE: RotaxEngines-List: Re: Low voltage problem- new 912ULS Ira, B&C Electric sold me a over/under voltage module that replaces Aeroelectic's. I think its working OK because it does indicate an under voltage condition and the battery is not charging. I plan to add an under voltage warning light temporarily on the L port of the regulator as some here have suggested. Then I can see if AC voltage is coming into from the 912. This will tell me that my problems down-stream from the engine alternator/dynamo. If it is, there are several components and a lot of wiring I need to check out... A big job in hard to get to places! Les > -----Original Message----- > From: owner-rotaxengines-list-server@matronics.com > [mailto:owner-rotaxengines-list-server@matronics.com] On > Behalf Of rampil > Sent: Sunday, January 06, 2008 7:22 AM > To: rotaxengines-list@matronics.com > Subject: RotaxEngines-List: Re: Low voltage problem- new 912ULS > > > > Without additional info, it does sound like a low voltage > condition. Not Hi. > Increasing load drops supply voltage. QED. > > Nuckolls does in fact make a low voltage sensor he calls the > low-voltage battery minder circuit which I use to transfer my > EFIS to a spare battery if the alternators drop off line in my Europa. > > Definitely check all connections with an ohm meter if > possible because you may not see corrosion in crimps or > contacts. Ground the regulator module directly to the engine > block with heavy wire. > > The L lead (alt warn lamp) lead on the regulator is not > mandatory and the Nuckolls module which replaces it is smarter. > > Definitely measure the bus voltage where the alternator joins > the bus after the contactor and on the actual bus after the > diodes etc. > > -------- > Ira N224XS > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=156311#156311 > > > > > > > > Photoshare, and much much more: > > ________________________________ Message 9 _____________________________________ Time: 11:14:43 AM PST US From: "Paul Kuntz" Subject: Re: RotaxEngines-List: Low voltage problem- new 912ULS Les, Please send me a copy of the pdf file. Regards, Paul Kuntz Pipistrel Sinus 912 http://www.pipistrelbuilders.com ----- Original Message ----- From: Les Goldner To: rotaxengines-list@matronics.com Sent: Sunday, January 06, 2008 10:26 AM Subject: RE: RotaxEngines-List: Low voltage problem- new 912ULS I will send anyone who can't read the schematic drawing a Adobe PDF file. If you can't read it let me know and I will send a jpg. Regards, Les ------------------------------------------------------------------------- --- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Icrashrc@aol.com Sent: Sunday, January 06, 2008 4:12 AM To: rotaxengines-list@matronics.com Subject: Re: RotaxEngines-List: Low voltage problem- new 912ULS I would love to be able to look over that schematic but i don't have a program to open it. Is there a free program online to read that type of file? Thanks, Scott www.ill-EagleAviation.com Do Not Archive _________________________________________________________________________ ___ If you have experienced and solved the following problem pls let me know. My 912ULS was sitting unopened for 3-years before I installed it in my new Zenith 701 but works well. My battery is new. I followed Aeroelectric's 912 wiring diagram, which included a low voltage warning light that triggers at 12.5V (if you have a CAD program you can look the diagram at http://www.aeroelectric.com/PPS/ACAD_Architecture_Dwgs/Z16L.dwg.) When I fly the plane, the low voltage warning light comes on as soon as I turn on anything requiring more than minimal power consumption (like the strobes) and the new battery voltage is lower after I land than it was before take off. Since the battery is draining in flight, the assumption is that the 912 alternator or voltage regulator is malfunctioning. I need to know if anyone else has experienced this situation, what was done to fix it, how to isolate and fix the problem, etc. Any help would be appreciated. Regards, Les ------------------------------------------------------------------------- --- Start the year off right. Easy ways to stay in shape in the new year. href="http://www.matronics.com/Navigator?RotaxEngines-List">http://www. matronics.com/Navigator?RotaxEngines-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ________________________________ Message 10 ____________________________________ Time: 01:06:54 PM PST US From: "Joe Ronco" Subject: RE: RotaxEngines-List: Low voltage problem- new 912ULS SCOTT: You might want to check out this link for free software. I have not used it but it might be what you are looking for. http://usa.autodesk.com/adsk/servlet/index?siteID=123112 &id=8824283 Joe R From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Icrashrc@aol.com Sent: Sunday, January 06, 2008 5:12 AM Subject: Re: RotaxEngines-List: Low voltage problem- new 912ULS I would love to be able to look over that schematic but i don't have a program to open it. Is there a free program online to read that type of file? Thanks, Scott www.ill-EagleAviation.com Do Not Archive ____________________________________________________________________________ If you have experienced and solved the following problem pls let me know. My 912ULS was sitting unopened for 3-years before I installed it in my new Zenith 701 but works well. My battery is new. I followed Aeroelectric's 912 wiring diagram, which included a low voltage warning light that triggers at 12.5V (if you have a CAD program you can look the diagram at http://www.aeroelectric.com/PPS/ACAD_Architecture_Dwgs/Z16L.dwg.) When I fly the plane, the low voltage warning light comes on as soon as I turn on anything requiring more than minimal power consumption (like the strobes) and the new battery voltage is lower after I land than it was before take off. Since the battery is draining in flight, the assumption is that the 912 alternator or voltage regulator is malfunctioning. I need to know if anyone else has experienced this situation, what was done to fix it, how to isolate and fix the problem, etc. Any help would be appreciated. Regards, Les _____ Start the year off right. Easy ways to stay in shape in the new year. ________________________________ Message 11 ____________________________________ Time: 01:40:09 PM PST US Subject: RotaxEngines-List: Ignition trouble shooting on 582 From: "Renaud" Hi, I have been trying to solve a problem of ignition on my 582 (on Kitfox IV), but I am not fully satisfied so far. Maybe one of you already had the same type of problem and could help me? Here is my story: I detected a failure of ignition on one of the circuits during descent (only), when the engine cools down. In these conditions, with only this circuit on (let's call it circuit 1) , sometimes engine does nor run smoothly, and sometimes even stop. With the other circuit on only (circuit 2) everything is fine. I inverted the two external coils (the black electronic blocs) to identify the source of the problem. Same result, circuit 1 still fails, which means the problem is in the stator or the position sensor. I then inverted the connections of the two sensors, to identify if the problem is in the stator or in the sensors. Guess what, now everything is running perfect on circuit 1 and on circuit 2! Ambient temperature was a little warmed for this last test, but apart from that nothing else was changed. I was suspecting a bad position adjustment of one of the sensor (gap between the sensor and the rotor), but now I am not really sure. Now everything runs fine, but I don't know why! Of course, to have access to inspect the stator and sensors, I would need to remove completely the engine from my Kitfox... Has any of you already had this type of funny story? Thanks in advance and happy flying in 2008! Renaud -------- Renaud KitFox IV - 1200. Rotax 582. 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