---------------------------------------------------------- RV7-List Digest Archive --- Total Messages Posted Mon 10/25/10: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:10 AM - Re: Oil Cooler Mount Cracks - Replacement Follow Up... (Hugh Ragg) ________________________________ Message 1 _____________________________________ Time: 02:10:23 AM PST US Subject: Re: RV7-List: Oil Cooler Mount Cracks - Replacement Follow Up... From: Hugh Ragg Nice work, I am very interested in this as my RV7 is almost complete. I looked at the oil cooler install and will have a very close look at modifying the installation. Thanks for the valuable feed back Regards Hugh On 25/10/2010, at 10:55 AM, Matt Dralle wrote: > > Dear Listers, > > First, let me say thanks to everyone that responded to my post regarding the oil cooler mount cracks. Lots of great feedback; I really appreciate it. > > Rather than subject the Oil Cooler's mounts directly to the mounting screw's tension, I decided to craft some angle brackets that much more evenly distribute the load over the original mount. I made a set for the front and back of the rear mount and a single top bracket for the front mount that would sandwich the Oil Cooler mount to the rear baffle. I very carefully trimmed the tube spacers to exactly fit between the front and back brackets; much more precisely than the original installation. The inside rear Oil Cooler mount got the requisite top and bottom notching to clear the engine mount and this time I hogged out a bit more to give even better clearance. (A couple of people noted the scratches on the motor mount near these original notches; I believe these were from when I was filing the original oil cooler, I got a little over zealous and scrapped the power coat; I don't believe that there has been any incounters between the oil cooler and the mount due to engine shake.) I also added a few more rivets on the flanges between the rear and left-rear baffle sheet metal pieces. > > To absorb some of the engine vibration, crafted a "gasket" of sorts from the same rubber material the baffle seals are made of. This really seem to nicely isolate the Oil Cooler from the baffle/engine. > > Finally, I crafted a sweet stabilization strut from aluminum tube stock to form a brace from the engine to the top of the rear engine baffle. This made a HUGE difference in the overall stiffness of the oil cooler and I'm hoping will be the final modification in solving this Oil Cooler cracking issue. > > Thanks again for all the feedback! > > > - > Matt Dralle > RV-8 #82880 N998RV > http://www.mattsrv8.com - Matt's RV-8 Construction Blog > http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel > Status: 112+ Hours Total Time Since May 2 2010 Test Flight! > <2010.10.17 - RV-8 - IO-390 Oil Cooler Mount Cracking (1).jpg><2010.10.17 - RV-8 - IO-390 Oil Cooler Mount Cracking (2).jpg><2010.10.24 - RV-8 - Oil Cooler Replacement And Remounting (1).jpg><2010.10.24 - RV-8 - Oil Cooler Replacement And Remounting (2).jpg><2010.10.24 - RV-8 - Oil Cooler Replacement And Remounting (3).jpg><2010.10.24 - RV-8 - Oil Cooler Replacement And Remounting (4).jpg><2010.10.24 - RV-8 - Oil Cooler Replacement And Remounting (5).jpg><2010.10.24 - RV-8 - Oil Cooler Replacement And Remounting (6).jpg><2010.10.24 - RV-8 - Oil Cooler Replacement And Remounting (7).jpg><2010.10.24 - RV-8 - Oil Cooler Replacement And Remounting (8).jpg><2010.10.24 - RV-8 - Oil Cooler Replacement And Remounting (9).jpg> ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv7-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV7-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/rv7-list Browse Digests http://www.matronics.com/digest/rv7-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.