---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sun 03/20/11: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:16 AM - Re: slow day on the list (Thom Riddle) 2. 10:00 AM - Re: slow day on the list (Dennis Thate) 3. 10:14 AM - FireFly Broken or Detached Outer Wing Braces. (Jack B. Hart) 4. 06:10 PM - sacrilege? (Dana Hague) ________________________________ Message 1 _____________________________________ Time: 06:16:42 AM PST US Subject: Kolb-List: Re: slow day on the list From: "Thom Riddle" Great video, Bob. Thanks for posting it. I don't suppose that Aeronca back then bothered with approving or disapproving maneuvers like loops or spins :-). Based on the flying I've done with you in recent years, you appear to have been a bit more adventurous back then. Of course that was long before cell towers. -------- Thom Riddle Buffalo, NY (9G0) Kolb Slingshot SS-021 Jabiru 2200A #1574 Tennessee Prop 64x32 Don't accept your dog's admiration as conclusive evidence that you are wonderful. Ann Landers Read this topic online here: http://forums.matronics.com/viewtopic.php?p=334501#334501 ________________________________ Message 2 _____________________________________ Time: 10:00:53 AM PST US Subject: Kolb-List: Re: slow day on the list From: "Dennis Thate" Thanks for that very fine vintage video. It reminds me of getting up early on Sunday mornings as a kid skipping church and watching a half hour local TV show , [ Sherm Booen's World of Aviation ] of mostly flying up to northern Minnesota to go fishing or a area flight breakfast, with a hand held movie camera ..... technology of that time period. http://www.pavekmuseum.org/Booen.htm Thanks for the memories . -------- Both optimists and pessimists contribute to our society. The optimist invents the airplane and the pessimist the parachute. ~Gil Stern Faith is believing what you know ain't so - Mark Twain Read this topic online here: http://forums.matronics.com/viewtopic.php?p=334530#334530 ________________________________ Message 3 _____________________________________ Time: 10:14:14 AM PST US From: "Jack B. Hart" Subject: Kolb-List: FireFly Broken or Detached Outer Wing Braces. Kolbers, >From my flight log: November 9, 2010 - Removed propeller for cutting to 48 inches. Washed the FireFly, and while washing heard a noise. Found that both rear outer wing corner braces have broken. March 19, 2011 - Cut the wing fabric over the rear diagonal 5/16 inch OD brace to the main spar. The left brace broke at the cross brace attachment bracket, The forward end was loose in attachment to the spar tube. The right brace was not broken but the attachment holes in the brace tube were torn out and the forward end was free. Both braces show that they were in high compression in that one cannot move them back into place with out over lap or, in the case of the space between the attachment end and the spar, a gap of about 1/8 of an inch. Most likely cause is that when the fabric was shrunk before painting it put this brace into severe compression and moved it out of direct/straight column. This makes the brace very unstable and unable to resist side to side vibration. As result the bowed brace vibrates and swings around the direct line between the attachment points. This in turn causes local tube flexing, and finally, fatigue failure at an attachment point results. To repair, one must move the spar attachment point from inside to out side the spar tube. Long rivets should be used to penetrate both walls of the bracing tube and the spar tube. Also, the same end of the small tube brace should be filled with JB Weld and the same substance used between the contact point of the tube. This will prevent the joint from moving, resist brace torsion and the pulling of the rivets through the tube wall. To repair the lower end, one can slide a slightly larger tube over the original tube, fill the gap with JB Weld, and use several pop rivets to hold it together. None of this will keep the tube from going into compression on a new build. But much of the movement and/or vibration about a column can be minimized by using a tape and/or woven fish line and/or a diagonal metal tube brace from the end bow to the middle of the suspended brace length and on to the back side of the main spar. Jack B. Hart FF004 Winchester, IN ________________________________ Message 4 _____________________________________ Time: 06:10:52 PM PST US From: Dana Hague Subject: Kolb-List: sacrilege? I'm starting to think it might be time to move on from my UltraStar. It's a great airplane, and I love flying it, but for what I want, it's... limited. I'd like to take somebody for a ride on occasion. I'd like to be able to handle grass fields over 6" tall without trashing my prop. I'd like a plane that's easier to repair if, God forbid, that Cuyuna gets quiet and I have to put it down in a rough spot and break it (there aren't many spots here in CT that _aren't_ rough). The sacrilege part is that (gasp!) I'm thinking of a 2 seat Quicksilver (a specific one, N numbered, that I've flown before, and can almost certainly get VERY cheap, from a friend, though it'll need some work). I know the Kolb is a much better, better flying airplane, with the storage advantages of folding wings and enclosed trailer... but there are the above drawbacks, too. I can't afford much of anything else (as I said, I can get the Quick cheap)... otherwise a different Kolb would be an option, I'd _love_ a Slingshot... or even a FSII... So who wants to talk me out of this? Or make an offer for a US with trailer, before I come to my senses? -Dana -- Come to think of it, there already are a million monkeys at a million typewriters, and the Internet is _NOTHING_ like Shakespeare! ------------------------------------------------------------------------------------- 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.