---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Mon 05/27/13: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:06 AM - Re: Hard start 912ULS (=?iso-8859-1?Q?J=F3hann_J=F3hannsson?=) 2. 04:32 AM - Re: Hard start 912ULS (David Weaver) 3. 05:00 AM - Re: Hard start 912ULS (Hugh McKay) 4. 06:31 AM - Re: Hard start 912ULS (David Weaver) 5. 06:52 AM - Re: Hard start 912ULS (Bob Comperini) 6. 07:30 AM - Re: Hard start 912ULS (Roger Lee) 7. 03:13 PM - ACS Ignition Switch (David Weaver) ________________________________ Message 1 _____________________________________ Time: 03:06:59 AM PST US Subject: Re: RotaxEngines-List: Hard start 912ULS From: =?iso-8859-1?Q?J=F3hann_J=F3hannsson?= Hello John. I had the same experience with my 912 UL starting. It turned out to be the starter like you suspect. Just to make sure, remove the starter and open it up. You will see some burned wire windings. This could happen if you let the started turn for too long. I replaced the starter with the "heavy duty" starter and everything has been working great since. Hope this helps, Johann G. Iceland. Zenith 701. On 27.5.2013, at 03:04, johnelling wrote: > > Starting my 912 has been increasingly difficult. it seems as if the starter has a hard time turning over the engine (it is a high-torque version). I thought it was a weak battery but the problem persists even if I add battery capacity. > > The last two attempts it sounds like the Bendix is not engaging much at all. Just a gear grinding sound and no prop turns. > > I suspect the starter motor. Anyone have another idea of something at which I should be looking and/or testing? > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=401401#401401 > > > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 04:32:14 AM PST US From: David Weaver Subject: Re: RotaxEngines-List: Hard start 912ULS I would highly recomend Sky Tech as a source for your starter.- They adve rtise lower cost, lower current draw, higher torque and lighter weight.- I am very pleased with my Sky Tech starter upgrade which was done to improv e winter time engine start-up. Dave Weaver N912GR --- On Mon, 5/27/13, J=F3hann J=F3hannsson wrote: From: J=F3hann J=F3hannsson Subject: Re: RotaxEngines-List: Hard start 912ULS hannsson?= Hello John. I had the same experience with my 912 UL starting. It turned out to be the starter like you suspect. Just to make sure, remove the starter and open it up. You will see some burned wire windings. This could happen if you let t he started turn for too long. I replaced the starter with the "heavy duty" starter and everything has bee n working great since. Hope this helps, Johann G. Iceland. Zenith 701. On 27.5.2013, at 03:04, johnelling wrote: com> > > Starting my 912 has been increasingly difficult.- it seems as if the st arter has a hard time turning over the engine (it is a high-torque version) .- I thought it was a weak battery but the problem persists even if I add battery capacity.- > > The last two attempts it sounds like the Bendix is not engaging much at a ll.- Just a gear grinding sound and no prop turns.- > > I suspect the starter motor.- Anyone have another idea of something at which I should be looking and/or testing? > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=401401#401401 > > > > > > > > > > le, List Admin. ________________________________ Message 3 _____________________________________ Time: 05:00:42 AM PST US From: "Hugh McKay" Subject: Re: RotaxEngines-List: Hard start 912ULS Dave, Is the Sky Tech firm you recommend located at the Rock Hill airport in SC? Hugh G. McKay III, P.E. Senior Consultant Worldwide Engineering Inc. 4090 North NC Hwy. 16 Denver, NC 28037 Ph. 704-661-8271 Fax 704-483-5466 email hgmckay@bellsouth.net http://www.wwegeo.com From: David Weaver Sent: Monday, May 27, 2013 7:31 AM Subject: Re: RotaxEngines-List: Hard start 912ULS I would highly recomend Sky Tech as a source for your starter. They advertise lower cost, lower current draw, higher torque and lighter weight. I am very pleased with my Sky Tech starter upgrade which was done to improve winter time engine start-up. Dave Weaver N912GR --- On Mon, 5/27/13, J=F3hann J=F3hannsson wrote: From: J=F3hann J=F3hannsson Subject: Re: RotaxEngines-List: Hard start 912ULS To: rotaxengines-list@matronics.com Date: Monday, May 27, 2013, 5:06 AM =?iso-8859-1?Q?J=F3hann_J=F3hannsson?= Hello John. I had the same experience with my 912 UL starting. It turned out to be the starter like you suspect. Just to make sure, remove the starter and open it up. You will see some burned wire windings. This could happen if you let the started turn for too long. I replaced the starter with the "heavy duty" starter and everything has been working great since. Hope this helps, Johann G. Iceland. Zenith 701. On 27.5.2013, at 03:04, johnelling wrote: > > Starting my 912 has been increasingly difficult. it seems as if the starter has a hard time turning over the engine (it is a high-torque version). I thought it was a weak battery but the problem persists even if I add battery capacity. > > The last two attempts it sounds like the Bendix is not engaging much at all. Just a gear grinding sound and no prop turns. > > I suspect the starter motor. Anyone have another idea of something at which I should be looking and/or testing? > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=401401#401401 > > > > > > > > > > ?RotaxEngines-List" target=_blank>http://www.matronics.com/Navigator?Rotasp; - MATRONICS WEB FO/" ; -Matt Dralle, List Admin========= ________________________________ Message 4 _____________________________________ Time: 06:31:46 AM PST US From: David Weaver Subject: Re: RotaxEngines-List: Hard start 912ULS I ordered my Sky Tech starter through Air Spruce.- I do not know where th e compay is located but use of on-line search engine will disclose that.- My 912-UL engine cranks like it is on steroids. Dave Weaver --- On Mon, 5/27/13, Hugh McKay wrote: From: Hugh McKay Subject: Re: RotaxEngines-List: Hard start 912ULS Dave, - Is the Sky Tech firm you recommend located at the Rock Hill airport in SC? - Hugh G. McKay III, P.E. Senior Consultant Worldwide Engineering Inc. 4090 North NC Hwy. 16 Denver, NC 28037 Ph. 704-661-8271 Fax 704-483-5466 email hgmckay@bellsouth.net http://www.wwegeo.com - From: David Weaver Sent: Monday, May 27, 2013 7:31 AM Subject: Re: RotaxEngines-List: Hard start 912ULS - I would highly recomend Sky Tech as a source for your starter.- They adve rtise lower cost, lower current draw, higher torque and lighter weight.- I am very pleased with my Sky Tech starter upgrade which was done to improv e winter time engine start-up. Dave Weaver N912GR --- On Mon, 5/27/13, J=F3hann J=F3hannsson wrote: From: J=F3hann J=F3hannsson Subject: Re: RotaxEngines-List: Hard start 912ULS hannsson?= Hello John. I had the same experience with my 912 UL starting. It turned out to be the starter like you suspect. Just to make sure, remove the starter and open it up. You will see some burned wire windings. This could happen if you let t he started turn for too long. I replaced the starter with the "heavy duty" starter and everything has bee n working great since. Hope this helps, Johann G. Iceland. Zenith 701. On 27.5.2013, at 03:04, johnelling wrote: com> > > Starting my 912 has been increasingly difficult.- it seems as if the st arter has a hard time turning over the engine (it is a high-torque version) .- I thought it was a weak battery but the problem persists even if I add battery capacity.- > > The last two attempts it sounds like the Bendix is not engaging much at a ll.- Just a gear grinding sound and no prop turns.- > > I suspect the starter motor.- Anyone have another idea of something at which I should be looking and/or testing? > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=401401#401401 > > > > > > > > > > ?RotaxEngines-List" target=_blank>http://www.matronics.com/Navigator?Ro tasp;------------- - MATRONICS WEB FO/" ;-- ------------ -Matt Dralle, List Admin==== ===== href="http://www.matronics.com/Navigator?RotaxEngines-List">http://www.ma tronics.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 5 _____________________________________ Time: 06:52:48 AM PST US From: Bob Comperini Subject: Re: RotaxEngines-List: Hard start 912ULS On 06:31 AM 5/27/2013, David Weaver wrote: >I ordered my Sky Tech starter through Air Spruce. I do not know where the compay is located but use of on-line search engine will disclose that. My 912-UL engine cranks like it is on steroids. http://www.skytecair.com/LSA.htm -- Bob Comperini e-mail: bob@fly-ul.com WWW: http://www.fly-ul.com ________________________________ Message 6 _____________________________________ Time: 07:30:15 AM PST US Subject: RotaxEngines-List: Re: Hard start 912ULS From: "Roger Lee" The other item that would help is what year engine Mfg is this and its hours? Did you actually try a new battery? Does it sound like the starter whirls, but the engine kind of lags behing or stops turning even when the starter is still turning. If the starter is turning fine then it is your sprag clutch associated with the starter and engine start. If people ever get kick back or turn their props backward it will trash the sprag clutch. The higher torque Rotax starter is gold in color and the older style is black. The black one isn't bad for the UL, but the ULS should have the high torque gold one. Changing the sprag will will encompass removal of the electrical end assembly. -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Repair Center - Heavy Maint. Rated Home 520-574-1080 TRY HOME FIRST Cell 520-349-7056 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=401411#401411 ________________________________ Message 7 _____________________________________ Time: 03:13:09 PM PST US From: David Weaver Subject: RotaxEngines-List: ACS Ignition Switch During a take off run, following a mag check for normal RPM drop, the engin e miss-fired continuously following rotation and lift off.- I immediately pulled back on throttle and let the 912 XP settle for landing.- I-ran off-the end of runway (2,400 Feet)-with no damage.- Transition-from runway end to-farmer's freshly planted field was smooth (large wheel opt ion on Pulsar).- The problem turned out to be my failure to return the ig nition switch to full right position detente between "left" and "both" posi tions.- Though I initially had full power at the beginning of the take-of f run, vibration may have caused enough of a change in switch contact posit ion to-lead to-the problem.- When the Pulsar rolled to a stop, I sat quietly and reviewed my procedure and discovered the problem with the key p osition.- The problem has not reoccurred since that eventful flight.- I t seems logical that spring loading in the switch, if provided,-should ca use-the selector to-prefer one detente or-the nearest-and not settle on a mi d-position between detentes? Dave Weaver N912GR ------------------------------------------------------------------------------------- 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.