---------------------------------------------------------- Zenith701801-List Digest Archive --- Total Messages Posted Mon 05/26/08: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:39 AM - Re: Flapperon spar location (MacDonald Doug) 2. 05:32 AM - Chat Room Reminder (George Race) 3. 08:23 AM - Baffling for cylinder cooling (carl bertrand) 4. 08:34 AM - 912 Cases needed (ricklach) 5. 03:22 PM - Re: 701 Project Needs Engine (Brady) ________________________________ Message 1 _____________________________________ Time: 03:39:05 AM PST US From: MacDonald Doug Subject: Re: Zenith701801-List: Flapperon spar location Thank a lot for your help John. Doug M Do not Archive --- JohnDRead@aol.com wrote: > Doug, I measured a skin and 174 mm is the distance > from the TE to the > prepunched rivet line. > > John Read ________________________________ Message 2 _____________________________________ Time: 05:32:02 AM PST US From: "George Race" Subject: Zenith701801-List: Chat Room Reminder Please join us for our Monday evening chat room starting around 8:00 PM Eastern Time. http://www.mykitairplane.com/chat/ George CH-701 Registered as N73EX Do Not Archive ________________________________ Message 3 _____________________________________ Time: 08:23:41 AM PST US From: "carl bertrand" Subject: Zenith701801-List: Baffling for cylinder cooling I built my 701 from plans in 1994/95. It is powered by a Rotax 912 covered with a Zenair cowl without any internal baffling as per the Zenair demonstrator and recommendations at the time. The engine now has 490 hrs and is still running smooth and strong; I see no difference in static RPM since first flight. I am concerned about two things however: 1. Front Cylinders head temp is much cooler than the rear; 2. Compression on the front cylinder is 20 lbs less than the rear. 115 vs. 135. This has existed and remained steady since first annual in Nov 1995. I suspect a cause and affect between these to parameters. My questions to the list is: I know of two other 701s that have the same cowl set-up and have never seen a 701/912 with baffles. Is this the norm? I'm considering investigating the reason for the lower compression in the front (vales or cylinders) and designing some baffling to equalize the cooling. If I just correct the cooling could this destabilize an engine that is running well? Any comments appreciated. Carl ________________________________ Message 4 _____________________________________ Time: 08:34:42 AM PST US Subject: Zenith701801-List: 912 Cases needed From: "ricklach" I am looking for a pair of Rotax 912 engine cases that are JUNK. I need them for a mock-up. They can be crashed, cracked or what ever. The only part that needs to be there is all the mounting bosses on the bottom and the rear of the cases. 80HP, 100HP or 914 for that matter, it doesnt matter to me. I can be reached at: rick@ravengear.us Rick Read this topic online here: http://forums.matronics.com/viewtopic.php?p=184868#184868 ________________________________ Message 5 _____________________________________ Time: 03:22:59 PM PST US Subject: Zenith701801-List: Re: 701 Project Needs Engine From: "Brady" Tom, Ever consider the Corvair? -------- Brady McCormick Poulsbo, WA www.magnificentmachine.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=184933#184933 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith701801-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith701801-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/zenith701801-list Browse Digests http://www.matronics.com/digest/zenith701801-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.