---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sat 09/19/20: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:15 AM - Re: RotaxEngines-List Digest: 2 Msgs - 09/18/20 (M. A. R.) 2. 09:33 AM - Soft start (david park) 3. 11:33 AM - Re: Soft start (Guy Buchanan) ________________________________ Message 1 _____________________________________ Time: 07:15:22 AM PST US From: "M. A. R." Subject: RotaxEngines-List: Re: RotaxEngines-List Digest: 2 Msgs - 09/18/20 I=99m no longer in the market for an engine. Please remove me from yo ur list. Thanks!! On Sat, Sep 19, 2020 at 2:46 AM RotaxEngines-List Digest Server < rotaxengines-list@matronics.com> wrote: > * > > > ======================== > > Online Versions of Today's List Digest Archive > > ======================== > > > Today's complete RotaxEngines-List Digest can also be found in either of > the > > two Web Links listed below. The .html file includes the Digest formatted > > in HTML for viewing with a web browser and features Hyperlinked Indexes > > and Message Navigation. The .txt file includes the plain ASCII version > > of the RotaxEngines-List Digest and can be viewed with a generic text > editor > > such as Notepad or with a web browser. > > > HTML Version: > > > http://www.matronics.com/digest/digestview.php?Style=82701&View=html& Chapter 20-09-18&Archive=RotaxEngines > > > Text Version: > > > http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&C hapter 20-09-18&Archive=RotaxEngines > > > ======================== ======================= > > EMail Version of Today's List Digest Archive > > ======================== ======================= > > > ---------------------------------------------------------- > > RotaxEngines-List Digest Archive > > --- > > Total Messages Posted Fri 09/18/20: 2 > > ---------------------------------------------------------- > > > Today's Message Index: > > ---------------------- > > > 1. 07:20 PM - Rotax 912 Eating Ignition Modules (Guy Buchanan) > > 2. 07:27 PM - Re: Rotax 912 Eating Ignition Modules (william > sullivan) > > > ________________________________ Message 1 > _____________________________________ > > > Time: 07:20:05 PM PST US > > Subject: RotaxEngines-List: Rotax 912 Eating Ignition Modules > > From: "Guy Buchanan" > > > A friend has a 912uls in a Kitfox that seems to be eating ignition > modules. He's > > gone through three. Yes they were all old. Yes new ones work, but we're > worried > > that maybe his plane is producing electrical noise detrimental to the > modules. > > We did some testing using an oscilloscope looking for voltage spikes in t he > > ground wire during start up and shutoff. For various reasons we weren't > able > > to capture any voltage spikes during start and stop, but did capture some > very > > messy noise signatures while running. Picture 1 shows one module's ground > wire > > while "open". Note +/- 30V peaks and a regular 30hz sawtooth. Picture 2 > shows > > the same ground "grounded". We did some further testing of the input and > output > > to the voltage regulator and those voltages appeared relatively clean. > Question: > > is it possible the ignition module is being damaged by the voltage noise, > > regardless of source? Should we apply some caps to the ground wires to ki ll > > the noise? > > > Thanks, > > > -------- > > Guy Buchanan > > K-IV 1200 / 912Uls / Warp / 500 hours and flying again. > > Now a glider pilot too. > > > Read this topic online here: > > > http://forums.matronics.com/viewtopic.php?p=498422#498422 > > > Attachments: > > > http://forums.matronics.com//files/labnation_screenshot2_112.png > > http://forums.matronics.com//files/labnation_screenshot0_140.png > > > ________________________________ Message 2 > _____________________________________ > > > Time: 07:27:33 PM PST US > > From: william sullivan > > Subject: Re: RotaxEngines-List: Rotax 912 Eating Ignition Modules > > > My gut instinct says clean and tighten all grounds. If a component groun ds > > through it's base, take off the unit and clean and ground the contact ar ea > > . Good luck! > > > Bill Sullivan > > > On Friday, September 18, 2020, 10:21:35 PM EDT, Guy Buchanan > an@cox.net> wrote: > > > t> > > > A friend has a 912uls in a Kitfox that seems to be eating ignition module s. > > He's gone through three. Yes they were all old. Yes new ones work, but w e' > > re worried that maybe his plane is producing electrical noise detrimental t > > o the modules. We did some testing using an oscilloscope looking for volt ag > > e spikes in the ground wire during start up and shutoff. For various reas on > > s we weren't able to capture any voltage spikes during start and stop, bu t > > did capture some very messy noise signatures while running. Picture 1 sho ws > > one module's ground wire while "open". Note +/- 30V peaks and a regular 30 > > hz sawtooth. Picture 2 shows the same ground "grounded". We did some furt he > > r testing of the input and output to the voltage regulator and those volt ag > > es appeared relatively clean. Question: is it possible the ignition modul e > > is being damaged by the voltage noise, regardless of source? Should we ap pl > > y some caps to the ground wires to kill the noise? > > > Thanks, > > > -------- > > Guy Buchanan > > K-IV 1200 / 912Uls / Warp / 500 hours and flying again. > > Now a glider pilot too. > > > Read this topic online here: > > > http://forums.matronics.com/viewtopic.php?p=498422#498422 > > > Attachments: > > > http://forums.matronics.com//files/labnation_screenshot2_112.png > > http://forums.matronics.com//files/labnation_screenshot0_140.png > > > - > > S - > > WIKI - > > - > > =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. > > =========== > > =========== > > =========== > > =========== > > =========== > > ________________________________ Message 2 _____________________________________ Time: 09:33:51 AM PST US From: david park Subject: RotaxEngines-List: Soft start I have just fitted two new soft start modules to my Rotax 912ULS. Should they both be activated by the start switch and start on both modules. or select only one module to start then activate the second by going to both. I have only wired up one module at the moment but have installed wire to be used from the second module if it is ok to do so.? Any experts out there? G-LDVO Dave Park Dave Park ________________________________ Message 3 _____________________________________ Time: 11:33:24 AM PST US Subject: Re: RotaxEngines-List: Soft start From: Guy Buchanan No expert, but I started on one. Guy Buchanan Ramona, CA Deceased Kitfox IV-1200 / 912-S / Warp 3cs / 600 hrs Glider pilot, too On 9/19/2020 9:32 AM, david park wrote: > > I have just fitted two new soft start modules to my Rotax 912ULS. Should they both be activated by the start switch and start on both modules. or select only one module to start then activate the second by going to both. I have only wired up one module at the moment but have installed wire to be used from the second module if it is ok to do so.? > Any experts out there? > G-LDVO > > Dave Park > > Dave Park > > ------------------------------------------------------------------------------------- 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.