---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Mon 05/04/09: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:01 AM - Re: 912ULS integrated alternator question (K Dilks) 2. 07:34 AM - Re: 912ULS integrated alternator question (pasj66) 3. 07:41 AM - Re: 912ULS integrated alternator question (pasj66) 4. 09:42 AM - Re: Re: 912ULS integrated alternator question (Craig Payne) 5. 10:37 AM - Re: 912ULS integrated alternator question (lucien) 6. 03:05 PM - Re: Re: 912ULS integrated alternator question (Pete Christensen) 7. 03:18 PM - Re: Re: 912ULS integrated alternator question (Pete Christensen) 8. 07:41 PM - Re: Re: 912ULS integrated alternator question (Noel) 9. 07:41 PM - Re: Re: 912ULS integrated alternator question (Noel) ________________________________ Message 1 _____________________________________ Time: 12:01:26 AM PST US Subject: RotaxEngines-List: Re: 912ULS integrated alternator question From: "K Dilks" Its ok to run the alternator with no load but to run the regulator with no load is bad news for it.....but I think you have just found that out. It does not blow immediately but after some time. Kev : :) -------- Austria ............. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=242594#242594 ________________________________ Message 2 _____________________________________ Time: 07:34:27 AM PST US Subject: RotaxEngines-List: Re: 912ULS integrated alternator question From: "pasj66" Hi all, If the 22000 mF capacitor is broken the R/R can be burnt due to too much AC on the 12 V. (fig 52 pos 25 in the installation manual) Best regards Patrik -------- MCR R100, R914UL3 W/IC Read this topic online here: http://forums.matronics.com/viewtopic.php?p=242635#242635 ________________________________ Message 3 _____________________________________ Time: 07:41:24 AM PST US Subject: RotaxEngines-List: Re: 912ULS integrated alternator question From: "pasj66" Correction on capacitor size: 22 mF... Regards Patrik -------- MCR R100, R914UL3 W/IC Read this topic online here: http://forums.matronics.com/viewtopic.php?p=242637#242637 ________________________________ Message 4 _____________________________________ Time: 09:42:48 AM PST US From: "Craig Payne" Subject: RE: RotaxEngines-List: Re: 912ULS integrated alternator question The size stated in the installation manual is 22 thousand uF (microfarads) (image attached). This is a fairly large electrolytic capacitor, probably about an inch or so in diameter and 2 to 3 inches long. "- a capacitor (Fig. 67 Pos. (25)) of at least 22 000 uF / 25 V is necessary to protect the correct functioning of regulator and to flatten voltage. The regulator is not designed to store any electrical charge. If for any reason the battery or bus system is disconnected from the regulator while the engine is running (i.e. the master switch is shut off) the capacitor will safely absorb and dissipate the electrical charge produced by the generator. Otherwise the regulator would be damaged." -- Craig -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of pasj66 Sent: Monday, May 04, 2009 8:41 AM Subject: RotaxEngines-List: Re: 912ULS integrated alternator question Correction on capacitor size: 22 mF... Regards Patrik -------- MCR R100, R914UL3 W/IC Read this topic online here: http://forums.matronics.com/viewtopic.php?p=242637#242637 ________________________________ Message 5 _____________________________________ Time: 10:37:35 AM PST US Subject: RotaxEngines-List: Re: 912ULS integrated alternator question From: "lucien" K Dilks wrote: > Its ok to run the alternator with no load but to run the regulator with no load is bad news for it.....but I think you have just found that out. It does not blow immediately but after some time. > > Kev : :) Actually the R lead was still connected, looking over the plug again. I think the thing just plain burnt out. Not too surprising tho, as I flew the plane early one with a bad batt, had a shorted cell so was always drawing a charge, that plus electrics. I figure it was just more than it could handle. Stiil you'd think it would have its own protection mechanism against an open circuit for 170 bucks - my case would have been at the plug so a capacitor to earth wouldn't have helped me....... LS -------- LS Titan II SS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=242678#242678 ________________________________ Message 6 _____________________________________ Time: 03:05:29 PM PST US From: "Pete Christensen" Subject: Re: RotaxEngines-List: Re: 912ULS integrated alternator question Patrik, I think you were right the first time. 22,000mF. Pete ----- Original Message ----- From: "pasj66" Sent: Monday, May 04, 2009 8:40 AM Subject: RotaxEngines-List: Re: 912ULS integrated alternator question > > Correction on capacitor size: 22 mF... > > Regards > Patrik > > -------- > MCR R100, R914UL3 W/IC > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=242637#242637 > > > > > > > > > > ________________________________ Message 7 _____________________________________ Time: 03:18:10 PM PST US From: "Pete Christensen" Subject: Re: RotaxEngines-List: Re: 912ULS integrated alternator question I put a capacitor the size of a beer can in mine. It's 57,000mF. But I had it in my junk box. Pete Hell Paso ----- Original Message ----- From: "Craig Payne" Sent: Monday, May 04, 2009 10:23 AM Subject: RE: RotaxEngines-List: Re: 912ULS integrated alternator question > The size stated in the installation manual is 22 thousand uF (microfarads) > (image attached). This is a fairly large electrolytic capacitor, probably > about an inch or so in diameter and 2 to 3 inches long. > > "- a capacitor (Fig. 67 Pos. (25)) of at least 22 000 uF / 25 V is > necessary > to protect the correct functioning of regulator and to flatten voltage. > The > regulator is not designed to store any electrical charge. If for any > reason > the battery or bus system is disconnected from the regulator while the > engine is running (i.e. the master switch is shut off) the capacitor will > safely absorb and dissipate the electrical charge produced by the > generator. > Otherwise the regulator would be damaged." > > -- Craig > > -----Original Message----- > From: owner-rotaxengines-list-server@matronics.com > [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of pasj66 > Sent: Monday, May 04, 2009 8:41 AM > To: rotaxengines-list@matronics.com > Subject: RotaxEngines-List: Re: 912ULS integrated alternator question > > > Correction on capacitor size: 22 mF... > > Regards > Patrik > > -------- > MCR R100, R914UL3 W/IC > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=242637#242637 > > > ________________________________ Message 8 _____________________________________ Time: 07:41:12 PM PST US From: "Noel" Subject: RE: RotaxEngines-List: Re: 912ULS integrated alternator question That should tell you something about solder and airplanes... If it isn't inside a box/case don't use it! Noel -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of lucien Sent: 03 May 2009 11:59 AM Subject: RotaxEngines-List: Re: 912ULS integrated alternator question icrashrc wrote: > I just saw a similar problem in a 912 powered Alegro. The charging system seemed to have problems keeping the voltage up at anything less than cruise power. Finally the charging system quit working. After the regulator was replaced all was much better, even the low voltage at low rpm issue. I wouldn't be surprised if your low voltage problems went away as well. The Alegro has 2 glass panels, electric fuel pump, landing lights, strobes, transponder, gps, etc, etc, etc. and can maintain reasonable voltage levels... now. In my case, it appeared some solder had dribbled into the spade connector on one of the battery leads (the one going to B+ on the R/R) so it never correctly connected to the R/R. I figure it finally just came off inside the connector creating an open circuit and blowing the regulator. BTW, is there a better quality R/R we can use instead of the Ducati one? For 170 bucks a pop, they shouldn't blow so easily and often..... LS -------- LS Titan II SS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=242490#242490 Checked by PC Tools AntiVirus (6.0.0.19 - 10.004.028). http://www.pctools.com/free-antivirus/ ________________________________ Message 9 _____________________________________ Time: 07:41:12 PM PST US From: "Noel" Subject: RE: RotaxEngines-List: Re: 912ULS integrated alternator question The Honda Gold Wing should have a dirt big and heavy duty R/R ... connections should be the same. Noel -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Gilles Thesee Sent: 03 May 2009 02:47 PM Subject: Re: RotaxEngines-List: Re: 912ULS integrated alternator question lucien a crit : > BTW, is there a better quality R/R we can use instead of the Ducati one? For 170 bucks a pop, they shouldn't blow so easily and often..... > Have you considered the Schicke GR6 ? http://contrails.free.fr/elec_ducati_en.php Best regards, -- Gilles http://contrails.free.fr Checked by PC Tools AntiVirus (6.0.0.19 - 10.004.028). http://www.pctools.com/free-antivirus/ ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-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/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-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.