---------------------------------------------------------- Kitfox-List Digest Archive --- Total Messages Posted Mon 07/21/14: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:27 AM - Re: 582 Overheating (mikeperkins) 2. 01:39 PM - Re: 582 Overheating (Patrick Reilly) ________________________________ Message 1 _____________________________________ Time: 06:27:13 AM PST US Subject: Kitfox-List: Re: 582 Overheating From: "mikeperkins" Hi Jared, My 532 on a hot day might get to 170 while taxiing. I have a 140-degree thermostat, no airscoop, and a small, plastic-bottle reservoir. I get about 12 oz of expansion coolant into the reservoir during normal operation. If you need a larger reservoir because of coolant overflow, it might be a steam pocket in the head. That can be eliminated by bleeding the air completely from the head. I have to tip my airplane about 20 degrees nose-low with the cylinder head bleed port open. The reason for all the gymnastics is because when the plane is parked the top of my coolant filler is below the highest point in the cylinder head. So without tipping the nose down, the coolant would never reach the highest point of the cylinder head. If steam builds up in the head because of an air pocket, the engine will overheat. It's happened to me. The only other thing I can think of is that your radiator is caked on the inside. I'd also think about a 140-degree thermostat. Maybe try removing the thermostat as an experiment. There are actually places for two thermostats. The other is on the lower part of the crankcase where the hose connects. It's claimed it helps keep the temperature steadier, but I've never known anyone to use it - sounds like just one more component to fail. -------- Mike Perkins Havana, Illinois Model I, 532, B gearbox, GSC prop Read this topic online here: http://forums.matronics.com/viewtopic.php?p=427052#427052 ________________________________ Message 2 _____________________________________ Time: 01:39:08 PM PST US Subject: Re: Kitfox-List: 582 Overheating From: Patrick Reilly Jared, Where are you located? I have the oversized radiator 8" x 20" that came with a firewall forward 582 that I purchased from S CA. I imagine it had been flown in the S CA desert. I originally didn't know it was over size. But, realized that before 1st flight. I would tape off 1/3 of it in the summer and 2/3 in the winter and got the desired temps. It was mounted on 1 1/2" spacers pushing it down into the wind from the belly. I recently replaced it with the 4" x 20" standard radiator and get 170 to 180 degree temps in 80 degree ambient air. I do have a thermostat .....can't remember what temp. If you aren't running in extreme hot ambient conditions, the standard 4" x 20" radiator should give you adequate cooling if everything else is correct. Pat Reilly Mod 3 582 Rebuilt Rockford, IL On Mon, Jul 21, 2014 at 1:39 AM, Michael Gibbs wrote: > > I had the same experience with my 912S. Ran fine without the scoop but > overheated within minutes after takeoff with it installed. Never got to the > bottom of the issue, just left it off. > > Mike G. > Phoenix, AZ > Kitfox IV-1200 Speedster, Series 6 > > > On Jul 20, 2014, at 8:49 PM, Guy Buchanan wrote: > > > > > > With my 582 I had to pull the scoop and lower the radiator 1". Otherwise > I couldn't taxi without overheating. "Stock" radiator. (Probably 4x20) No > reservoir. 180 thermostat. I also was very careful to insulate the water > pump line from the exhaust heat. > > > > Guy Buchanan > > Ramona, CA > > Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded > > Now a glider pilot, too. > > -- Pat Reilly Mod 3 582 Rebuild Rockford,IL ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kitfox-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kitfox-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/kitfox-list Browse Digests http://www.matronics.com/digest/kitfox-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.