---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sun 12/16/12: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:30 AM - 912 ULS trying to overheat (frank goodnight) 2. 08:23 AM - Re: 912 ULS trying to overheat (John Hauck) 3. 02:00 PM - CFI with KOLB? (alienwes) ________________________________ Message 1 _____________________________________ Time: 07:30:09 AM PST US From: frank goodnight Subject: Kolb-List: 912 ULS trying to overheat Hi Kolbers, I need some help ,and head scratching--read thinking. Still fly my HKS powered Firestar,however just finished building a Zenith 701 with a 912ULS with about 800 hrs, that was removed from a Titan Tornado.John H. you may be intrested to know the plane was built and owned by Ken W. Korenek who flew it with your friend John Wiilliams. The engine is in good shape and runs good. BUT when I tried to go around the patteren , about half way around I had to abort because the temps were going torwards red line CHT was 270 and climbing, and oil temp 250 and climbing.After landing could not cool down by runing at idle. I removed the cowling and flew about an hour at different speeds and power settings the temps stayed normal oil temp 235F and CHT around 200. the cowl came from Zenith for a 701 with a 912 bed mount.The oil cooler is mounted piggyback on and in front of the water radiator. They both came off the Titan and preformed good there. They are mounted about an inch behind the prop, and the tops are about 2 inches below the prop shaft centered in the middle of the hole in the cowl. A friend that flies a Rans cayotte , told me that when he first started he had the same problem --He thinks there was an air bubble in the water sys. Any one with thoughts , knowledge , or advice please respond. Thanks Frank Goodnight Firestar & 701 do not archive ________________________________ Message 2 _____________________________________ Time: 08:23:50 AM PST US From: "John Hauck" Subject: RE: Kolb-List: 912 ULS trying to overheat He thinks there was an air bubble in the water sys. Any one with thoughts , knowledge , or advice please respond. Thanks Frank Goodnight Frank G/Kolbers: Have no experience with enclosed 912's, so cannot help you there. My experience has been that the cooling system has to be bled and topped off until all the air is out of the cooling system. This probably means that you will have to raise the tail, or put the airframe and engine in whatever attitude it will require to bleed the air. In addition, you will need to insure the coolant recovery system is sealed and operating as required. If after doing the above, you can further lower temps by reducing the ratio of water to antifreeze. More antifreeze reduces cooling capacity. Less antifreeze increases cooling capacity. I usually operate with enough antifreeze to insure I am covered down to about 0F. Have you checked with Zenith to help solve your problem? john h mkIII Titus, Alabama ________________________________ Message 3 _____________________________________ Time: 02:00:23 PM PST US Subject: Kolb-List: CFI with KOLB? From: "alienwes" I think the best way to learn if I want a KOLB is to find a CFI who trains in one. Does anyone know of a CFI with a KOLB? Also, any recommendations on who is the best for learning to fly a KOLB? I live in New Mexico and would appreciate any leads. I am a current Sport Pilot with Powered Parachute endorsement. Wesley Elliott -------- Wesley Elliott Sport Pilot-PPC Read this topic online here: http://forums.matronics.com/viewtopic.php?p=390556#390556 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-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/kolb-list Browse Digests http://www.matronics.com/digest/kolb-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.