---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Fri 10/09/09: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:33 AM - Carb Balance (Rich L) 2. 06:08 AM - Re: Carb Balance (Bob Borger) 3. 08:02 AM - Re: Carb Balance (Roger Lee) 4. 08:48 AM - BRS Chute for sale (Matt Tucciarone) 5. 02:35 PM - For Sale (Jeffrey A Beachy) 6. 08:36 PM - Re: Carb Balance (Rich L) ________________________________ Message 1 _____________________________________ Time: 05:33:08 AM PST US Subject: RotaxEngines-List: Carb Balance From: "Rich L" This question is probably for Roger but some others may be interested. Do I have to go through the whole mechanical and dynamic balance each time I balance the carbs on my 912uls or can I just do the dynamic step. Seems after once doing the mechanical setup, you shouldn't have to do it again. thanks Rich in North Idaho Kitfox SS7 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=267209#267209 ________________________________ Message 2 _____________________________________ Time: 06:08:50 AM PST US From: Bob Borger Subject: Re: RotaxEngines-List: Carb Balance Rich, You probably should check the mechanical setup at both idle and full throttle to ensure both carbs reach the stops and that correct idle is set. Only adjust if necessary prior to dynamic balance. Other folks please chime in... Bob Borger Europa XS Monowheel, ROTAX 914 with intercooler & Airmaster C/S prop. On Friday, October 09, 2009, at 07:32AM, "Rich L" wrote: > >This question is probably for Roger but some others may be interested. Do I have to go through the whole mechanical and dynamic balance each time I balance the carbs on my 912uls or can I just do the dynamic step. Seems after once doing the mechanical setup, you shouldn't have to do it again. > >thanks >Rich in >North Idaho > Kitfox SS7 > > >Read this topic online here: > >http://forums.matronics.com/viewtopic.php?p=267209#267209 > > ________________________________ Message 3 _____________________________________ Time: 08:02:34 AM PST US Subject: RotaxEngines-List: Re: Carb Balance From: "Roger Lee" Hi Rich, You really should do both a mechanical and then a pneumatic each time. The reason behind this is things can change a little like cable length from newer cables relaxing and a slight stretch to ends slipping some in the cable locks. If you hook up your gauges and the carbs are close to being together then in reality it would most likely be ok, but I will tell you Rotax wants the mechanical balance done each time before the pneumatic. Carbs should be balanced every 100 hrs and at the annual condition inspection. I have never seen a set of carbs balanced when I hook up a set of gauges and they never will because of normal wear & tear on tolerances within the carb and on the linkages outside. Once you have done it a time or two then the carb balance procedure gets easier. This is one the single most important things you can do for you engine's health. The cross over tube can only correct so much then the right side of the engine will try to run at a different rpm from the left if the balance is out too far. This makes one half the engine working against the other and causes vibration and wear and tear on the engine internals and gearbox. A gauge set does not have to be expensive and you can make your own if you want. I do lots of 100 hr and annual inspections. When I do the 100 hr. I just reset the annual date so someone doesn't have to do two or more inspections a year depending of course on how many hours a year they fly. If they fly 200-300 hours a year then extra inspections are needed. Many SLSA have to do regular 100 hr. inspections required by the Mfg. and that experimental's aren't really required to, but Rotax wants you to do 100 hr. inspections regardless of what type of plane you fly. If you skip maint. times then you only hurt yourself and may set yourself up for later expenses for maint issues. With out the maint checks how can you guarantee your plane is in good condition and that something might fail or something is coming loose? I know even with the inspection it is not 100%, but it's a whole! lot bet ter than no inspection or regular service. I know a few backyard mechanics with their planes that think so long as it doesn't quit and starts it is ok to fly! The biggest problem that Rotax engines have whether 2 stroke or 4 stroke are the owners. Either no maint or trying to change something. -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Service Center 520-574-1080 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=267224#267224 ________________________________ Message 4 _____________________________________ Time: 08:48:19 AM PST US From: "Matt Tucciarone" Subject: RotaxEngines-List: BRS Chute for sale Just thought I might mention this before I put I on barnstormers. I have a BRS 1200 for sale. It has been on my Aventura II since I bought it in 2003. The plane has been hangered all it's life so thee chute looks good. The chute is 9 years old. I am asking $1,500 for it or best offer. Matt ________________________________ Message 5 _____________________________________ Time: 02:35:28 PM PST US Subject: RotaxEngines-List: For Sale From: Jeffrey A Beachy Aeroshell Sport Plus 4 oil for sale. Use in 912 series engines. $82.00 per case, including shipping to the lower 48 states. I have three cases for sale. Also, genuine Rotax oil filters for 912 series Rotax part number 825-701 (Black, newest style) $14.00 each, including shipping to the lower 48 states I have seven filters available. Jeff Beachy Ohio Zenith CH701 ____________________________________________________________ Human Resource Training Complete an accredited human resources degree, 100% online. Free info! http://thirdpartyoffers.juno.com/TGL2141/c?cp=XsugZt6RTTAYqmCvsG_llQAAJ1DiiycSmethy-W4j7COG-gFAAQAAAAFAAAAAEa2Mz4AAAMlAAAAAAAAAAAAAAAAAAASIwAAAAA ________________________________ Message 6 _____________________________________ Time: 08:36:38 PM PST US Subject: RotaxEngines-List: Re: Carb Balance From: "Rich L" The engine was running like a top but I had 130 hours since changing plugs and carb balance and it was annual anyway. I just bought a Carbmate and watched the video on ROAN so I was ready. I changed all the plugs and hooked up the Carbmate and it showed the carbs a little out of balance till the engine wormed up, then it was in balance without touching anything. I put it to full sense and it still showed in balance. I double checked the Carbmate connections. I can't see detuning to retune when its ok.???????? Rich Read this topic online here: http://forums.matronics.com/viewtopic.php?p=267313#267313 ------------------------------------------------------------------------------------- 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.