Thanks Mark. Looks like a good solution and should minimize the hole Cedric would have to dig in the wing stub. Added benefit would be an inspection/maintenance port created.
Any idea whether the flex is really a problem? We are pushing to get the plane finished an flying by the end of next summer - so I don’t want to push my son into doing unnecessary mods. Cheers, Owen Mark Langford wrote: One possible solution would be to chop the bent end off and replace it with a "two piece shaft collar" with a bellcrank welded to it. You can see one of these critters in the second from the last and the last photo at http://www.n56ml.com/kcontrol.html <http://www.n56ml.com/kcontrol.html> . I used one of these on both the elevator pushrod and my giant flap torque tube. It won't slip if properly sized and torqued, at least mine have never slipped. McMaster Carr sells them, at https://www.mcmaster.com/#shaft-collars/=19yz1lt <https://www.mcmaster.com/#shaft-collars/=19yz1lt> .... (scroll down for aluminum ones) . I don't know enough about the geometry of the plans-built flap mechanism, but this might work for you. Mark Langford m...@n56ml.com http://www.n56ml.com <http://www.n56ml.com/> > On Oct 25, 2017, at 2:22 PM, svd <osprey...@yahoo.com> wrote: > > > Hi Guys, > > Our KR2 has the original plans flap linkage which consisted of the flap > torque tube squashed flat and turned up at 90 deg. > > While simple and cheap, I’m more than a bit worried about its structural > integrity. I notice significant lack of rigidity in the split flap position > even with the flap handle locked in position. The flex appears to be at the > 90 deg linkage in the wing stub. > > I searched the archive and found that Joe Horton also noticed the same - and > when he dug out the the linkage found cracks and bending of the aluminum > components. He replaced with steel. > > The flap linkage is buried in the wing stub. Is it worth it for me to rip > open the wing to examine/re-fit? > > Has anyone else had problems? > > If there is a problem, is it dangerous? > > Cheers, > Owen Hughes > _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
