---------------------------------------------------------- Allegro-List Digest Archive --- Total Messages Posted Tue 10/23/07: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:48 AM - Rotax 912ULS overheating issues (Threadcharmer@cs.com) ________________________________ Message 1 _____________________________________ Time: 11:48:08 AM PST US From: Threadcharmer@cs.com Subject: Allegro-List: Rotax 912ULS overheating issues Is anyone else out there flying an Allegro 2000 with a 100 hp Rotax 912ULS? I'm interested in finding out about any overheating issues. I just completed my kit on amphibious Shark Floats after 18 months and can't get around the pattern more than twice before having to land with the temp creeping up close to 275F. I've added more intake area to the front of the cowling, including one set of openings that allows fresh air to flow directly over the cylinders. I've also added a 2" naca vent to the top of the cowling with a hose flowing directly to the radiator. In my last attempt, I removed the spinner (I was using a 10" UHS) and the temperature came down about 10 degrees. Most of the Allegros I've heard of are using the 80hp Rotax, which in my opinion, can get away with the smaller radiator they left us space for. Any further thoughts on the subject? Dale Hackworth splashlanding@comcast.net Allegro 2000 N306AD Hobe Sound, FL ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message allegro-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Allegro-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/allegro-list Browse Digests http://www.matronics.com/digest/allegro-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.