---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Thu 06/13/13: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:43 AM - Re: Hi CHT on the Rotax 912uls (bjones@dmv.com) 2. 06:40 AM - Re: Hi CHT on the Rotax 912uls (Roger Lee) 3. 09:11 AM - Re: Rotax 912 exhaust pipe repair (JohnE) 4. 09:16 AM - Re: Rotax 912 exhaust pipe repair (Thom Riddle) ________________________________ Message 1 _____________________________________ Time: 05:43:34 AM PST US Subject: Re: RotaxEngines-List: Hi CHT on the Rotax 912uls From: bjones@dmv.com In a related matter, I have a Kitfox IV with 912 that has dual coolant temp sending units and matched UMA gauges. The sending unit mounted in the coolant line (supplied by Lockwood) reads about ten degrees cooler than the sending unit and gauge combination mounted in the cylinder head. I have switched wires between sending units and gauges just to make sure there is not a discrepancy between sending units and gauges. BJ Kitfox IV 80 hp 912 > > A lot has been said about the 912uls cooling. I have had CHT temps over > 240 degF for over 2 years in the summer. Not to red line but Not > Comfortable to fly any distance with. I have over 1100 hours on my Kitfox > S7 and my Evans "lifetime" coolant and was ready for a change. I read an > article, (I think by Roger) about using 50/50 Antifreeze instead of Evans > would reduce bring the temps by 25 to 30 degrees. > > It works!!!! My CHT and Coolant Temp are down 25 degrees today with the > same OAT as when they were in the 240 range. I am ready to take a summer > trip again. BTW, I chose Prestone DexCool (Orange). Thanks Roger > > -------- > Rich Little > N812RL S-7 912ULS > North Idaho > Kiev Prop > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=402577#402577 > > ________________________________ Message 2 _____________________________________ Time: 06:40:55 AM PST US Subject: RotaxEngines-List: Re: Hi CHT on the Rotax 912uls From: "Roger Lee" There will be a few degrees difference. One is reading the actual water temp at that specific point and the other the metal temp at a totally different point. Rotax considers anything like your 10 degrees to be more or less the same. -------- 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=402609#402609 ________________________________ Message 3 _____________________________________ Time: 09:11:34 AM PST US Subject: RotaxEngines-List: Re: Rotax 912 exhaust pipe repair From: "JohnE" Thom Riddle wrote: > John, > > After you get the tube repaired, make sure you do a pneumatic synchronization of the carbs. Unbalanced carbs add a lot of unnecessary vibration to the whole powerplant. Our DA20-A1 has 1100+ hours on its second engine (F3) and no cracks. I check the balance during every annual inspection. Hi Thom, Thanks for the advice. I'm using the downtime to send my carbs in for overhaul and then will do a pneumatic synch when I get them back. My engine seems pretty smooth, but in aviation, smooth is relative. :-) Good to hear from another DA20-A1 owner. There are not too many left in the US. -John Read this topic online here: http://forums.matronics.com/viewtopic.php?p=402623#402623 ________________________________ Message 4 _____________________________________ Time: 09:16:41 AM PST US Subject: RotaxEngines-List: Re: Rotax 912 exhaust pipe repair From: "Thom Riddle" ...There are not too many left in the US.... Quite true. Many DA20-A1 owners sold them to buyers in Europe where their excellent fuel economy and Rotax engines are considered virtues. -------- Thom Riddle Buffalo, NY (9G0) Don't worry about old age... it doesn't last very long. - Anonymous Read this topic online here: http://forums.matronics.com/viewtopic.php?p=402624#402624 ------------------------------------------------------------------------------------- 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.