stunthanger.com
Speed,Combat,Scale,Racing => Carrier => Topic started by: Joe Just on April 15, 2013, 12:42:49 PM
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Well, sometimes I think I am in the wrong hobby. What I thought might be a pleasure to build turnes out to be just another big mitakes. I built this Dumas Corsair for nostalgia. I did not have the jigs, they were not in the kit, and most of the plans were either not there or were smudged to badly to read. As I finished painting it I discovered that the wing is warped seriously. Hopefully the warps in both "I" beam wings were wraped in different directions and while they are are not repairable maybe the warps will balance out the plane enough so that it will fly level. If it wil do that I may not just burn it and make it a Carrier trainer for my youngest Grandson.
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I don't call any Nostalgia profile crummy, probably more authentic as to what was actually flown back in the day. Just add adjustable trim tabs on both outer wings and tweak as necessary. Looks good...really. 8)
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Is this the Corsair or the Crusader? I thought I remembered the Corsair having a conventional stab/ elevator and no anhedral. I could be wrong,as all my experience is with the Crusader.
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Joe,
Heat your stove oven to 350 degrees, with gloves on stick a wing in until it begins to sag a bit then twist it to straighten. works with silk, monocote and other polyester covering. correct the remaining warp with trim tabs as suggested Some people use a heat gun but I think the oven is easier
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At Joe's age he will know what I am talking about. Get the old teakettle out and start steaming the wing. One panel at a time. May have to hold it while it cools/dries out. Aunt Betty let me use hers at VSC one year on a plane that came out warped on the trip out.
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On further looking the plane has a major building error. The "I" beam is made in 2 pieces that fit into a notch that one cuts in the top of the fuse. Somehow the outboard beam was epoxied in at a different angle than the inboard side. Perhaps I didn't cut the bottom of the notch straight, or the beam shifted during the drying. In any case that is the problem, not warpage. How I overlooked the problem has to be blamed on impending senility. "Hey joe, leave out the word impending and you just might be right", said a good pal of mine. I will attempt the insertion of bendable small aerolons, which just might solve the problem. If that doesn't work I will destroy the wings and rebuild something easier.
Joe
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Ailerons type trim tabs - good idea. Unasked for suggestion: Attach them using heat treated (to make softer) 1/16 copper tubing. About 3 epoxyed into the TE of the wing and inside edge of the trim tabs/ailerons. They will stay put under normal conditions but can easily be "tweaked". Regardless of the outcome, you have to fly it at least once. It may perform better than you think. I may have to build mine to show you how it's done. LL~ 8)
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Joe,
Why not use it as an asymmetrical test bed, the BV 141 flew very well, and there have been many others, even some models like the wun wing gon.
Model building can sure be a vixon.
John