---------------------------------------------------------- Aerobatic-List Digest Archive --- Total Messages Posted Wed 08/31/16: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:52 AM - excessive loss of oil during aerobatics (Markus Feyerabend) ________________________________ Message 1 _____________________________________ Time: 12:52:05 AM PST US From: "Markus Feyerabend" Subject: Aerobatic-List: excessive loss of oil during aerobatics Hello all, Last weekend I noticed an excessive loss of oil during aerobatics in our Extra (AEIO-580). Up to now we where using about 0.5-1 quart per hour of aerobatics, but last weekend that raise to around 4 quarts per hour (5 displays of around 15min each at an airshow). There is no visible (read "more then usual") oil coming from the cowling/firewall and I believe that if the engine oil would be burned by the engine (broken oil rings, bad valve guide or so) that there would be a noticable smoke trail coming from the exhaust with that amoutn of oil being lost!? However, in one short video sequence I saw that after a negative push to the vertical there was quite a trail of oil coming from the engine breather hose, which I havent noticed in previous flights (at least not as intense as in that clip). Im now suspecting the shuttle valve/air-oil separator... Any hints, tips, tricks or suggestions? Should I just remove both the shuttle valve and air-oil separator and clean/flush it with mineral spirits/petroleum? Anything else to be aware of? Thanks and best regards, Markus ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aerobatic-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Aerobatic-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/aerobatic-list Browse Digests http://www.matronics.com/digest/aerobatic-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.