---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sun 12/05/10: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:37 AM - Rotax revised Service Instruction SI-912-020 / SI-914-022 Revision 4 (Carlos Trigo) 2. 07:17 AM - Re: Rotax revised Service Instruction SI-912-020 / SI-914-022 Revision 4 (FLYaDIVE) 3. 09:55 AM - Re: Rotax revised Service Instruction SI-912-020 / SI-914-022 Revision 4 (John Fasching) 4. 11:04 AM - Re: Rough Running 912 (Goodone) 5. 11:19 AM - Re: Rough Running 912 (Roger Lee) 6. 11:26 PM - Re: Re: Rough Running 912 (joeing701@simnet.is) ________________________________ Message 1 _____________________________________ Time: 04:37:01 AM PST US From: "Carlos Trigo" Subject: RotaxEngines-List: Rotax revised Service Instruction SI-912-020 / SI-914-022 Revision 4 Is everybody aware of the many modifications suggested by this Service Instruction? http://www.rotax-owner.com/pdf/SI-912-020-R4.pdf Carlos ________________________________ Message 2 _____________________________________ Time: 07:17:17 AM PST US Subject: Re: RotaxEngines-List: Rotax revised Service Instruction SI-912-020 / SI-914-022 Revision 4 From: FLYaDIVE OK - Someone HELP! I write tech reports for a living but this statement is totally confusing: 1.5 COMPLIANCE NONE - For Information Only. Then they follow it up with a NOTE: WARNING - Non-compliance with these instructions could result in engine damage, personal injury or death! Come on ROTAX make up your mind! Ya gots ta under. Barry On Sun, Dec 5, 2010 at 7:33 AM, Carlos Trigo wrote: > trigo@mail.telepac.pt> > > Is everybody aware of the many modifications suggested by this Service > Instruction? > > http://www.rotax-owner.com/pdf/SI-912-020-R4.pdf > > Carlos > > ________________________________ Message 3 _____________________________________ Time: 09:55:46 AM PST US From: "John Fasching" Subject: Re: RotaxEngines-List: Rotax revised Service Instruction SI-912-020 / SI-914-022 Revision 4 That's the problem with all of Rotax instructions...they're so loaded with legal CYA that the legalize gets in the way of communicating. ----- Original Message ----- From: FLYaDIVE To: rotaxengines-list@matronics.com Sent: Sunday, December 05, 2010 8:13 AM Subject: Re: RotaxEngines-List: Rotax revised Service Instruction SI-912-020 / SI-914-022 Revision 4 OK - Someone HELP! I write tech reports for a living but this statement is totally confusing: 1.5 COMPLIANCE NONE - For Information Only. Then they follow it up with a NOTE: WARNING - Non-compliance with these instructions could result in engine damage, personal injury or death! Come on ROTAX make up your mind! Ya gots ta under. Barry On Sun, Dec 5, 2010 at 7:33 AM, Carlos Trigo wrote: Is everybody aware of the many modifications suggested by this Service Instruction? http://www.rotax-owner.com/pdf/SI-912-020-R4.pdf Carlos ========== ="_blank">www.aeroelectric.com ooks.com" target="_blank">www.buildersbooks.com et="_blank">www.homebuilthelp.com ="_blank">http://www.matronics.com/contribution le, List Admin. ========== -List" target="_blank">http://www.matronics.com/Navigator?RotaxEngines-List ========== http://forums.matronics.com ========== ________________________________ Message 4 _____________________________________ Time: 11:04:19 AM PST US Subject: RotaxEngines-List: Re: Rough Running 912 From: "Goodone" Went flying this past Friday and the rough running 912UL was back in the mid range (4400-4800rpm) . Not real rough but noticeable to me. I have had this problem in the past (see beginning of this thread). Note that the rough running occurred at the same time of year in the past when the air here gets cold (40 F or below). The engine is in sync. Do you folks think a change in needle to richen the mixture a bit is the answer? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=322365#322365 ________________________________ Message 5 _____________________________________ Time: 11:19:40 AM PST US Subject: RotaxEngines-List: Re: Rough Running 912 From: "Roger Lee" You said the engine is in sync? So you pneumatically synced the carbs? Mechanical doesn't really mean a lot. It is only a starting point. There are some people who do have a slight rough spot down around 4000-4400 when throttling back in the pattern. That may be normal, but it shouldn't be around the 4600 and above. What is your mag drop on each ignition and at what rpm are you doing the mag drop? If it was a blade out from the others it will usually have a roughness throughout all rpms. What is your WOT rpm flat and level? While were are at it, when you sync the carbs pneumatically that means they should be right on equal vacuum and not just close. If you can get them close them you can get them right on. -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Repair Center Home 520-574-1080 TRY HOME FIRST Cell 520-349-7056 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=322367#322367 ________________________________ Message 6 _____________________________________ Time: 11:26:34 PM PST US From: "joeing701@simnet.is" Subject: Re: RotaxEngines-List: Re: Rough Running 912 Hello Goodone. This is exactly the same thing my friend has been experiencing on his Kitfox. His cure was to change the needle jet to the next larger size or from 2,72 to 2.80. Solved his problem but as Roger Lee has pointed out, this could just be a part of the problem, but the temps are normal in the mid range after the change. Hope this helps, Johann G. Iceland. ----- Upprunalegt skeyti ----- Fr: "Goodone" Til: rotaxengines-list@matronics.com Sent: Sunnudagur, 5. desember, 2010 19:01:03 GMT +00:00 Monrovia Efni: RotaxEngines-List: Re: Rough Running 912 Went flying this past Friday and the rough running 912UL was back in the mid range (4400-4800rpm) . Not real rough but noticeable to me. I have had this problem in the past (see beginning of this thread). Note that the rough running occurred at the same time of year in the past when the air here gets cold (40 F or below). The engine is in sync. Do you folks think a change in needle to richen the mixture a bit is the answer? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=322365#322365 ------------------------------------------------------------------------------------- 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.