---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Tue 04/27/10: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:53 PM - Question about High EGTs on a 912 (Les Goldner) ________________________________ Message 1 _____________________________________ Time: 09:53:58 PM PST US From: "Les Goldner" Subject: RotaxEngines-List: Question about High EGTs on a 912 After flying my Zenith 701 w/a Rotax 912ULS a few hundred miles at 5100 RPM yesterday I noticed an EGT problem. Toward the end of the flight, with OAT about 65F at 2000', the EGTs started creeping up to 1620F (the maximum allowed temp) on one exhaust and about 1590F on the other. It dropped when I reduced RPM to 4000 or raised it to 5500RPM. When I noticed this, I looked around. After getting my head out of a clouds, I also noticed the engine was running on a single mag. I am hoping that this was the cause of the overheating, although I don't understand why this should be so. It's going to be raining here (in N. California) for a few days. Since I can't fly to check out if running on both mags will bring the EGTs down, I was wondering if anyone in Rotax land had an opinion about whether running on a single mag could causing the high EGTs. If you don't think running on a single mag caused the problem, and you have seen this before, I could use advice as to how to proceed before tearing the carbs apart. When I can fly again, I'll report if the mag issue was the culprit here. Les ------------------------------------------------------------------------------------- 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.