---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Tue 06/12/12: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:43 AM - Re: Re: exhaust system modification (Bob Haas) ________________________________ Message 1 _____________________________________ Time: 11:43:32 AM PST US From: "Bob Haas" Subject: Re: JabiruEngine-List: Re: exhaust system modification Lynn, Makes sense to me. Right now I would have to 15000 ft. or higher to justify a heat muff. My aircraft only flies in the confines of the Florida Peninsula, no heat required. Bob Haas. -----Original Message----- From: Lynn Matteson Sent: Saturday, June 09, 2012 1:26 PM Subject: Re: JabiruEngine-List: Re: exhaust system modification Thanks, Bob. The other reason that I did not try to "tune" the primary pipes to the suggested 32" was because of the problem of wrapping a heat muff around the pair of pipes on each side. If I had added some "extender bends" to the rear pipes, the heat muff would have been the size of a 55-gallon barrel. Here's a picture of the heat muffs prior to welding on the in and out tubes, which are now finished and installed: Now that I look at the picture again, the heat muffs will stay the same regardless of what I do to the Jabiru original rear primary pipes, as long as I do it before the slip-joint....Duhhh!! (sometimes I engage the fingers before the brain) Let me start again....the main reason that I did not make all pipes the same length was to be able to expedite the job, and get back to flying. By the way, Burns' Stainless sells the tabs and springs (called beehive springs, I think) and also sells stainless steel tabs which sit side-by-side on the to-be-connected pipes and are held together by a bolt. Lynn Matteson Kitfox IV Speedster, taildragger Jabiru 2200, #2062 Prince prop 64 x 30, P-tip Electroair direct-fire ignition system Rotec TBI-40 injection (sleeved to 36mm) Status: flying with 1280 hrs... (since 3-27-2006) On Jun 9, 2012, at 10:44 AM, Bob Haas wrote: > > > Hey Lynn That is a positive move. I extended the > pipes from the two into one junction and added approximately 24 > inches of extension > each side. I used motorcycle tabs and springs to support the > additional weight. It is not tuned but it's not too loud, and no > cracks in about a 100 > hours. I like your idea though. N 380 BH Alpi Pioneer Jabiru 2200. > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message jabiruengine-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/JabiruEngine-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/jabiruengine-list Browse Digests http://www.matronics.com/digest/jabiruengine-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.