---------------------------------------------------------- Kitfox-List Digest Archive --- Total Messages Posted Thu 05/06/21: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:20 PM - Re: Kitfox Mk2 Wing dihedral (Kirby Cramer) ________________________________ Message 1 _____________________________________ Time: 03:20:07 PM PST US From: "Kirby Cramer" Subject: RE: Kitfox-List: Kitfox Mk2 Wing dihedral I built my model 3 with 4 wings and controls with =C2=BD degree dihedral. This was intentional as I wanted to reduce drag. I consider the handling good in most conditions, but there is little control harmony in the early kitfoxes. Very sensitive pitch, strong roll and lots of rudder needed all the time. They always seem to need some rudder as IMO the empennage is a bit short and the tail and rudder are a bit small. Gap seals help for landing control at slow speeds. The handling described below I think has more to do with the wings than the angles. Model 3 wing has a lot of camber and therefore more drag. Model 4 wing and controls are better, especially the differential flaperon controls = less adverse yaw. (I also owned a model 2). My 3/4 flies hands off in calm air at about 95MPH. I have electric elevator trim tab and a fixed trim tab on the rudder set for this speed. Just takes some getting used to. Hope this helps! Kirby Cramer About 550 Kitfox hours, About 100 in RV7A From: owner-kitfox-list-server@matronics.com On Behalf Of James Shumaker Sent: Wednesday, May 5, 2021 5:50 PM Subject: Re: Kitfox-List: Kitfox Mk2 Wing dihedral Hi Guy Great to hear you're still around. I agree with you with you. My Model III had closer to 3 degrees, It flew great hands off, but the Rudder did not keep it straight. Jim Shumaker On Wednesday, May 5, 2021, 01:32:55 PM PDT, Guy Buchanan > wrote: > It's user preference, based on both aesthetics and controls. For controls, the less dihedral the less positive stability in roll. My IV had 1/2 degree per side. It would not fly straight and level hands-off, but would roll off onto one side or the other. It also had very low yaw-roll coupling, meaning it took a lot of yaw (rudder input) to get it to roll. The aesthetics were nice, though. Guy Buchanan Ramona, CA Kitfox IV-1200 / 912-S / Warp 3cs / 600 hrs Glider pilot, too On 5/5/2021 5:30 AM, skelly wrote: > > > Hi everyone, > I am rebuilding a mk2 kitfox and have just fitted the wings for the first time. > I have measured the dihedral angle and it works out at 2.2 degrees per wing. > I was wondering what peoples thoughts on this are ? > > It looks ok. > > Cheers, > > Skelly. > > -------- > Wanted KFM112 engine parts. > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=501709#501709 > > > > > > > > > = --> http://www.matronics.com/Navigator?Kitfox-List < Same great content also available via the Web Forums! http://forums.matronics.com