---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Wed 05/18/11: 15 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:01 AM - Re: 912 UL -- easily flooded when hot (Thom Riddle) 2. 05:35 AM - Re: 912 UL -- easily flooded when hot (Dave Austin) 3. 06:43 AM - Exhaust spring wear (Roger Lee) 4. 06:48 AM - Mag Ground (Vic Peters) 5. 06:59 AM - Re: Exhaust spring wear (Pete Christensen) 6. 07:06 AM - Re: Exhaust spring wear (TheWanderingWench) 7. 07:09 AM - Fw: Kolb-List: hanger break-in (Jack) 8. 07:41 AM - Kolb-List: hanger break-in (Jack) 9. 08:07 AM - Re: Exhaust spring wear (Bob Comperini) 10. 09:33 AM - Re: Mag Ground (Richard Girard) 11. 09:54 AM - Re: Mag Ground (Gordon) 12. 04:30 PM - Re: Mag Ground (Richard Girard) 13. 07:52 PM - TLR46a TCU Program (pestar) 14. 10:57 PM - Re: TLR46a TCU Program (PHILLIPS I) 15. 11:49 PM - Re: TLR46a TCU Program (Gilles Thesee) ________________________________ Message 1 _____________________________________ Time: 05:01:26 AM PST US Subject: RotaxEngines-List: Re: 912 UL -- easily flooded when hot From: "Thom Riddle" Ernest, There is another possible cause of your hot start problem. Make absolutely certain that your "choke" (starting carb) is closing completely when the choke control is closed. I.E., make sure the chokes are hitting their stops when choke is off. I've seen this so often it is the first thing I look for with a hot start problem. -------- Thom Riddle Buffalo, NY (9G0) Kolb Slingshot SS-021 Jabiru 2200A #1574 Tennessee Prop 64x32 Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas A. Edison Read this topic online here: http://forums.matronics.com/viewtopic.php?p=340251#340251 ________________________________ Message 2 _____________________________________ Time: 05:35:44 AM PST US From: "Dave Austin" Subject: Re: RotaxEngines-List: 912 UL -- easily flooded when hot Don, I had that problem for some time and after many other efforts I reduced the plug gaps to 22 thou and the problem disappeared. Dave Austin 601HDS 912UL ________________________________ Message 3 _____________________________________ Time: 06:43:29 AM PST US Subject: RotaxEngines-List: Exhaust spring wear From: "Roger Lee" Hi All, While I was doing another rubber hose replacement on a relatively higher time plane I noticed the springs are worn almost half way through where they connect over the loop on the exhaust pipe and muffler. I have seen this many times before and had forgot to mention something before. They do not need to be worn all the way through before they just break off and you will never know when it will fail. I used to own a Kolb MK III a long time ago and one did break before I caught it at 800 hrs. All the Rotax 912's have spring wear. When your plane gets to approximately 800 hrs. you need to toss the 8 exhaust springs and replace them. The vibration can and will eat right through the spring hook. You don't have to take anything else off, just pull the springs. Safety wire them and then re-apply the high temp silicone on the spring. There are two ways to apply silicone. The first way is to actually fill the inside of the spring with silicone. The second way and the one I use is to apply the silicone on the outside of the spring from top to bottom. Make it at least 3/8" wide and 1/4" tall. You need to give it some strength anbody by making it wide and tall enough to work. I thin little bead is worthless. Work it in between the spring coils. This is to dampen the vibration to the spring and help prevent premature spring breakage and help with the wear I just mentioned above. I have 720 hrs on my plane and they are worn half way through on 3 springs and a quarter the way through on the others. p.s. You can have faster exhaust spring wear so these should always be checked as the engine builds time, but I usually see the problem right around 700-800 hrs. Just keep an eye on yours. -------- 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=340277#340277 ________________________________ Message 4 _____________________________________ Time: 06:48:51 AM PST US Subject: RotaxEngines-List: Mag Ground From: "Vic Peters" All, In the past I have run my 912UL without plugs and or wires not connected to fill gas lines and bring up oil press. didn't know it was a no no. If I have caused a problem what would the symptoms be? -------- Vic 912ul Xtra Maine Too old to cut the mustard but not the cheese. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=340279#340279 ________________________________ Message 5 _____________________________________ Time: 06:59:44 AM PST US From: Pete Christensen Subject: Re: RotaxEngines-List: Exhaust spring wear I replaced my springs last summer because they were worn quite a bit nearly 1/2 through (maybe 580 hours). I had one of the new springs break on my tripthis year to Sun N Fun. I had the silicon and safety wire on the springs so they held until I noticed the broken spring immediately upon arriving home. I'm guessing that I damaged the spring with my vice grips when I installed it. Probably gouged the spring (or the tornado did it. ;>) Pete Kitfox III , (early 912 going on 650 hours) On 5/18/2011 8:40 AM, Roger Lee wrote: > --> RotaxEngines-List message posted by: "Roger Lee" > > Hi All, > > While I was doing another rubber hose replacement on a relatively highe r time plane I noticed the springs are worn almost half way through where they connect over the loop on the exhaust pipe and muffler. I have seen this many times before and had forgot to mention something before. They d o not need to be worn all the way through before they just break off and you will never know when it will fail. I used to own a Kolb MK III a lon g time ago and one did break before I caught it at 800 hrs. All the Rotax 912's have spring wear. When your plane gets to approximately 800 hrs. y ou need to toss the 8 exhaust springs and replace them. The vibration can and will eat right through the spring hook. You don't have to take anyth ing else off, just pull the springs. Safety wire them and then re-apply t he high temp silicone on the spring. There are two ways to apply silicone =2E The first way is to actually fill the inside of the spring with silic one. The second way and the one I use is to ! > apply the silicone on the outside of the spring from top to bottom. M ake it at least 3/8" wide and 1/4" tall. You need to give it some strengt h anbody by making it wide and tall enough to work. I thin little bead is worthless. Work it in between the spring coils. This is to dampen the vi bration to the spring and help prevent premature spring breakage and help with the wear I just mentioned above. > > I have 720 hrs on my plane and they are worn half way through on 3 spri ngs and a quarter the way through on the others. > > p.s. > You can have faster exhaust spring wear so these should always be check ed as the engine builds time, but I usually see the problem right around 700-800 hrs. Just keep an eye on yours. > > -------- > 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=340277#340277 > > =========== =========== =========== =========== > > ________________________________ Message 6 _____________________________________ Time: 07:06:25 AM PST US From: TheWanderingWench Subject: Re: RotaxEngines-List: Exhaust spring wear Hi Roger - My springs don't last anywhere near as long - usually about 150 hrs, even w ith high temp silicone. Even though I keep my Drifter hangared, the springs rust. I think it's because we're on the rainy side of the Oregon Cascades, with lots of humidity. Checking them is part of my pre-flight, and I chang e them at every annual. Arty Trost Maxair Drifter Sandy, Oregon www.LessonsFromTheEdge.com/uladventure2009.htm =0A =0A --- On Wed, 5/18/11, Roger Lee wrote: Hi All, While I was doing another rubber hose replacement on a relatively higher ti me plane I noticed the springs are worn almost half way through where they connect over the loop on the exhaust pipe and muffler. I have seen this man y times before and had forgot to mention something before. They do not need to be worn all the way through before they just break off and you will nev er know when it will fail. I used to own a Kolb MK III- a long time ago a nd one did break before I caught it at 800 hrs. All the Rotax 912's have sp ring wear. When your plane gets to approximately 800 hrs. you need to toss the 8 exhaust springs and replace them. The vibration can and will eat righ t through the spring hook. You don't have to take anything else off, just p ull the springs. Safety wire them and then re-apply the high temp silicone on the spring. There are two ways to apply silicone. The first way is to ac tually fill the inside of the spring with silicone. The second way and the one I use is to ! apply the silicone on the outside of the spring from top to bottom. Make i t at least 3/8" wide and 1/4" tall. You need to give it some strength anbod y by making it wide and tall enough to work. I thin little bead is worthles s. Work it in between the spring coils. This is to dampen the vibration to the spring and help prevent premature spring breakage and help with the wea r I just mentioned above. I have 720 hrs on my plane and they are worn half way through on 3 springs and a quarter the way through on the others. p.s. You can have faster exhaust spring wear so these should always be checked a s the engine builds time, but I usually see the problem right around 700-80 0 hrs. Just keep an eye on yours. -------- 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=340277#340277 le, List Admin. ________________________________ Message 7 _____________________________________ Time: 07:09:23 AM PST US From: Jack Subject: RotaxEngines-List: Fwd: Kolb-List: hanger break-in -------- Original Message -------- Subject: Kolb-List: hanger break-in From: Ralph B Thought you guys might be interested in this posted on the Kolb-List. --> Kolb-List message posted by: "Ralph B" I have some sad news to report. Mark's hanger at Forest Lake (25D in Minnesota) was broken into last night and my Kolbra was targeted. The thieves stole the engine, battery, aircraft seatbelts, and all avionics by unbolting and cutting off the engine cable and unscrewing the panel and cutting off the wires to all the instruments. Mark's large snowblower, tools, and battery charger were also stolen. Mark just finished building his new RANS S-7 and he is worried that his fuel may have been compromised although his airplane looked intact. They got in through the locked door and then opened the bi-fold hanger door to bring a hoist and vehicle into the hanger. This was all done under the cover of darkness. Mark called the police this morning and they have the engine serial number (#4400582). The Warp Drive tapered prop was also stolen (#T9433). The engine had a Titan exhaust system with a specially-made prop spacer. This polished aluminum prop spacer is very large and is one-of-a-kind. If anyone has any information on this please contact me or local law enforcement (651-325-6461 Forest Lake Police Department). Please be on the lookout for anyone who has recently acquired a used 912UL 80hp engine. The instruments, include an EIS, transponder, Microair radio, ASI, altimeter, and compass. I would appreciate it if you could forward this to other lists that I am not aware of. Here are some pictures ... Thanks for any information about this theft, Ralph Burlingame Mound, Minnesota -------- Ralph B Original Firestar 447 N91493 E-AB 1000 hours 24 years flying it Kolbra 912UL N20386 3 years flying it 150 hrs Read this topic online here: http://forums.matronics.com/viewtopic.php?p=340179#340179 Attachments: http://forums.matronics.com//files/what_the_panel_looked_like__786.jpg http://forums.matronics.com//files/missing_panel__174.jpg http://forums.matronics.com//files/missing_engine__101.jpg http://forums.matronics.com//files/kolbra_engine_stolen__104.jpg http://forums.matronics.com//files/everything_gone__837.jpg ________________________________ Message 8 _____________________________________ Time: 07:41:00 AM PST US From: Jack Subject: RotaxEngines-List: Kolb-List: hanger break-in - Tried to send this before but went back to Kolb List. -> Kolb-List message posted by: "Ralph B" I have some sad news to report. Mark's hanger at Forest Lake (25D in Minnesota) was broken into last night and my Kolbra was targeted. The thieves stole the engine, battery, aircraft seatbelts, and all avionics by unbolting and cutting off the engine cable and unscrewing the panel and cutting off the wires to all the instruments. Mark's large snowblower, tools, and battery charger were also stolen. Mark just finished building his new RANS S-7 and he is worried that his fuel may have been compromised although his airplane looked intact. They got in through the locked door and then opened the bi-fold hanger door to bring a hoist and vehicle into the hanger. This was all done under the cover of darkness. Mark called the police this morning and they have the engine serial number (#4400582). The Warp Drive tapered prop was also stolen (#T9433). The engine had a Titan exhaust system with a specially-made prop spacer. This polished aluminum prop spacer is very large and is one-of-a-kind. If anyone has any information on this please contact me or local law enforcement (651-325-6461 Forest Lake Police Department). Please be on the lookout for anyone who has recently acquired a used 912UL 80hp engine. The instruments, include an EIS, transponder, Microair radio, ASI, altimeter, and compass. I would appreciate it if you could forward this to other lists that I am not aware of. Here are some pictures ... Thanks for any information about this theft, Ralph Burlingame Mound, Minnesota -------- Ralph B Original Firestar 447 N91493 E-AB 1000 hours 24 years flying it Kolbra 912UL N20386 3 years flying it 150 hrs Read this topic online here: http://forums.matronics.com/viewtopic.php?p=340179#340179 Attachments: http://forums.matronics.com//files/what_the_panel_looked_like__786.jpg http://forums.matronics.com//files/missing_panel__174.jpg http://forums.matronics.com//files/missing_engine__101.jpg http://forums.matronics.com//files/kolbra_engine_stolen__104.jpg http://forums.matronics.com//files/everything_gone__837.jpg ________________________________ Message 9 _____________________________________ Time: 08:07:31 AM PST US From: Bob Comperini Subject: Re: RotaxEngines-List: Exhaust spring wear RE Spring breakage... I wonder if these springs would be any better than the Rotax springs: http://jbmindustries.com/ROTAX.htm Their two-stroke carb/plug boots, are WAY better than the crappy Rotax boots. -- Bob Comperini e-mail: bob@fly-ul.com WWW: http://www.fly-ul.com ________________________________ Message 10 ____________________________________ Time: 09:33:46 AM PST US Subject: Re: RotaxEngines-List: Mag Ground From: Richard Girard Vic, If your ignitions are still working you got away with it. There's a diode in the circuitry that takes the current when a plug tries to fire ungrounded and gets cooked. With it gone the ignition will be dead and since it's encapsulated the only fix is to replace the ignition module. Rick Girard On Wed, May 18, 2011 at 8:46 AM, Vic Peters wrote: > vicsv@myfairpoint.net> > > All, > In the past I have run my 912UL without plugs and or wires not > connected to fill gas lines and bring up oil press. didn't know > it was a no no. > If I have caused a problem what would the symptoms be? > > -------- > Vic > 912ul Xtra > Maine > Too old to cut the mustard but not the cheese. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=340279#340279 > > -- Zulu Delta Mk IIIC Thanks, Homer GBYM It isn't necessary to have relatives in Kansas City in order to be unhappy. - Groucho Marx ________________________________ Message 11 ____________________________________ Time: 09:54:16 AM PST US From: "Gordon" Subject: Re: RotaxEngines-List: Mag Ground That's interesting, so is the diode suppose to protect the circuitry? If so it doesn't seem well thought out. Gordon ----- Original Message ----- From: Richard Girard To: rotaxengines-list@matronics.com Sent: Wednesday, May 18, 2011 12:30 PM Subject: Re: RotaxEngines-List: Mag Ground Vic, If your ignitions are still working you got away with it. There's a diode in the circuitry that takes the current when a plug tries to fire ungrounded and gets cooked. With it gone the ignition will be dead and since it's encapsulated the only fix is to replace the ignition module. Rick Girard On Wed, May 18, 2011 at 8:46 AM, Vic Peters wrote: All, In the past I have run my 912UL without plugs and or wires not connected to fill gas lines and bring up oil press. didn't know it was a no no. If I have caused a problem what would the symptoms be? -------- Vic 912ul Xtra Maine Too old to cut the mustard but not the cheese. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=340279#340279 ========== -List" target="_blank">http://www.matronics.com/Navigator?RotaxEngines-List ========== http://forums.matronics.com ========== le, List Admin. ="_blank">http://www.matronics.com/contribution ========== -- Zulu Delta Mk IIIC Thanks, Homer GBYM It isn't necessary to have relatives in Kansas City in order to be unhappy. - Groucho Marx ________________________________ Message 12 ____________________________________ Time: 04:30:30 PM PST US Subject: Re: RotaxEngines-List: Mag Ground From: Richard Girard Gordon, No it's just the part of the module that gets damaged if it attempts to fire an ungrounded spark plug. Rick On Wed, May 18, 2011 at 11:51 AM, Gordon wrote: > That's interesting, so is the diode suppose to protect the circuitry? If > so it doesn't seem well thought out. > Gordon > > ----- Original Message ----- > *From:* Richard Girard > *To:* rotaxengines-list@matronics.com > *Sent:* Wednesday, May 18, 2011 12:30 PM > *Subject:* Re: RotaxEngines-List: Mag Ground > > Vic, If your ignitions are still working you got away with it. There's a > diode in the circuitry that takes the current when a plug tries to fire > ungrounded and gets cooked. With it gone the ignition will be dead and since > it's encapsulated the only fix is to replace the ignition module. > > Rick Girard > > On Wed, May 18, 2011 at 8:46 AM, Vic Peters wrote: > >> vicsv@myfairpoint.net> >> >> All, >> In the past I have run my 912UL without plugs and or wires not >> connected to fill gas lines and bring up oil press. didn't know >> it was a no no. >> If I have caused a problem what would the symptoms be? >> >> -------- >> Vic >> 912ul Xtra >> Maine >> Too old to cut the mustard but not the cheese. >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=340279#340279 >> >> >> >> >> >> >> >> ========== >> -List" target="_blank"> >> http://www.matronics.com/Navigator?RotaxEngines-List >> ========== >> http://forums.matronics.com >> ========== >> le, List Admin. >> ="_blank">http://www.matronics.com/contribution >> ========== >> >> >> >> > > > -- > Zulu Delta > Mk IIIC > Thanks, Homer GBYM > > It isn't necessary to have relatives in Kansas City in order to be unhappy. > - Groucho Marx > > > * > > 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* > > * > > * > > -- Zulu Delta Mk IIIC Thanks, Homer GBYM It isn't necessary to have relatives in Kansas City in order to be unhappy. - Groucho Marx ________________________________ Message 13 ____________________________________ Time: 07:52:04 PM PST US Subject: RotaxEngines-List: TLR46a TCU Program From: "pestar" I have the correct program for the serial number of my Rotax 914 however I am having problems connecting to the TCU. I have tried the following from 2 different laptops and 2 different USB to DB9 serial plugs and 2 different OS (XP & Windows 7) 2 x different cables (straight and crossover) and all combinations in between and continue to get the dreaded ERROR: Serial I/O continue with any key.. Battery is up to whack. The Rotax documentation tells me nothing about what ports speeds the serial port should be set at - default is 9600 whether the cable should be straight or crossed over. Would appreciate any pointers from anybody who has used this program. I am setting up my 914 (new) and having disconnected the wastegate servo unit need to re-calibrate as I cannot pull maximum manifold pressure as the waste gate is opening as I go up in revs. The Australian/New Zealand agents tell me that I need to re-calibrate as a starter. I thought I knew computers but this is frustrating the !@# out of me. Thanks Peter Armstrong Auckland, New Zealand Read this topic online here: http://forums.matronics.com/viewtopic.php?p=340348#340348 ________________________________ Message 14 ____________________________________ Time: 10:57:33 PM PST US Subject: Re: RotaxEngines-List: TLR46a TCU Program From: PHILLIPS I Hi Peter perhaps not a great help but a good number of usb to serial adaptors are not compatible, I use a old Windows 98 now with XP laptop with built in serial with no problem, I would try and Purchase or borrow a old machine from somebody as a way around your problem, Regards Ivor G-IVER On 19 May 2011 03:47, pestar wrote: > > I have the correct program for the serial number of my Rotax 914 however I > am having problems connecting to the TCU. I have tried the following from 2 > different laptops and 2 different USB to DB9 serial plugs and 2 different OS > (XP & Windows 7) 2 x different cables (straight and crossover) and all > combinations in between and continue to get the dreaded > > ERROR: Serial I/O continue with any key.. Battery is up to whack. > > The Rotax documentation tells me nothing about what ports speeds the serial > port should be set at - default is 9600 whether the cable should be straight > or crossed over. > > Would appreciate any pointers from anybody who has used this program. > > I am setting up my 914 (new) and having disconnected the wastegate servo > unit need to re-calibrate as I cannot pull maximum manifold pressure as the > waste gate is opening as I go up in revs. The Australian/New Zealand agents > tell me that I need to re-calibrate as a starter. > > I thought I knew computers but this is frustrating the !@# out of me. > > Thanks > > Peter Armstrong > Auckland, New Zealand > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=340348#340348 > > ________________________________ Message 15 ____________________________________ Time: 11:49:16 PM PST US From: Gilles Thesee Subject: Re: RotaxEngines-List: TLR46a TCU Program pestar a crit : > > I have the correct program for the serial number of my Rotax 914 however I am having problems connecting to the TCU. I have tried the following from 2 different laptops and 2 different USB to DB9 serial plugs and 2 different OS (XP & Windows 7) 2 x different cables (straight and crossover) and all combinations in between and continue to get the dreaded > > ERROR: Serial I/O continue with any key.. Battery is up to whack. > > The Rotax documentation tells me nothing about what ports speeds the serial port should be set at - default is 9600 whether the cable should be straight or crossed over. > > Would appreciate any pointers from anybody who has used this program. > > I am setting up my 914 (new) and having disconnected the wastegate servo unit need to re-calibrate as I cannot pull maximum manifold pressure as the waste gate is opening as I go up in revs. The Australian/New Zealand agents tell me that I need to re-calibrate as a starter. > Peter, Last year I used an old desktop and - I seem to remember - a straight cable. Will tell you what the OS was when I go to the hangar. During the build, my laptop had a serial port and XP pro OS. The calibration is for telling the system what the throttle position is, nothing to do with the wastegate servo and cable. We changed the wastegate cable last summer, and had no problem adjusting it without recalibration. You may want to ask NP at Dyn'Aero for the correct cable procedure. Best regards, -- Gilles http://contrails.free.fr ------------------------------------------------------------------------------------- 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.