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#21
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I still cant fathom what would lead to a need to reskin the entire
wings, and to attempt to do this with glue, *in the field*. AFAIK that is NOT an approved repair method. Maybe Bluejay knows. Bluejay? The approved repair methods are by riveting. You do apply a sealer to the joint to inhibit corrosion, but the strength of the repair is from the rivets. Ref. service kit SK125A. |
#22
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"Snowbird" wrote in message m... Many of them don't. Tigger's previous owner's previous Tiger (where's NewPS to tell me this doesn't make sense?) was also in that range, and had no delamination problems until they had it chemically stripped and painted. So I think there's usually some secondary issue involving chemical exposure (either intentional or environmental). That'll do it. There's a nice big placard on the firewall that tells you to consult the manual prior to performing any paint stripping. The manual shows large areas where chemical stripping is verboten because it can cause debonding. One downside to Grummans. A paint job that includes stripping is expensive because it's very labor intensive. Gerry |
#23
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"Bluejay" wrote in message thlink.net...
I still cant fathom what would lead to a need to reskin the entire wings, and to attempt to do this with glue, *in the field*. AFAIK that is NOT an approved repair method. Maybe Bluejay knows. Bluejay? The approved repair methods are by riveting. You do apply a sealer to the joint to inhibit corrosion, but the strength of the repair is from the rivets. Ref. service kit SK125A. Thanks, Bluejay. That's what I thought. Cheers, Sydney |
#24
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"G.R. Patterson III" wrote in message ...
Snowbird wrote: This is rather amazing to me, and leads me to wonder about the mechanic or your memory. Well, the mechanic is now running a towtruck operation, and it's been 8 years since we spoke about it. The Cheetah under discussion occupied the tiedown next to mine for several years. Rereading my post, it sounds rather snarky, for which I apologize. But seriously, there's something strange about this story. First that regluing in the field is not an authorized field repair method. It was a factory repair, and I *think* I heard Fletchair might be authorized to do it in a limited way for the purpose of fuel tank repair. Unless the mechanic in question worked at the factory??? Second, checking the bondlines for delamination is a regular part of the annual inspection on a Grumman. It is simple and easy (though tedious). It's hard for me to fathom how delamination could progress to the point where reskinning the wing was necessary, if proper annuals by a Grumman-savvy mechanic were being done. In fact, I can usually see the bondlines in the wing while in flight, and you can bet any missing lines would get my attention in a big hurry. I *did* hear that a couple of the affected planes suffered sufficiently extensive delamination that they went back to the factory for repair, but this was numerically a small number, and a problem which was basically resolved before the Grumman American went belly-up in '79. So it still seems strange to me that one mechanic would encounter 3 severely delaminated Grummans, all Cheetahs where there were fewer affected planes in the first place, and presumably relatively recently (?? ie not back in the late '70s when the problem was identified and mostly resolved). So this does seem strange to me. Not that things which seem strange to me haven't happened... Sydney |
#25
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Thank you thank you thank you to all that replied. This was a great wealth
of information and I am going to l ook into everything that was said, starting with looking for a partner now. This Tiger sounds like exactly what I want, based on all the honest replies. thanks again -- Dave A Yes I have stopped long enough to start and my car is back in that gear. "Dave Accetta" wrote in message ... I saw the thread earlier about the Tiger as I was about to type this, but it didn't answer any of my questions, so here goes. I keep seeing the Tiger for sale between $65k and $110k. I always thought these planes were highly desirable. This seems a little cheap compared to other planes the same age. Have they fallen out of favor or is this the norm? If I could find one for $75000 I'd be looking for a partner right now! I had heard that they are more desirable than the 172, but I think it seems that may be because of the price? I also heard they were a little faster than the 172? What is bad about this plane? The thought of this is getting me all revved up! -- -- Dave A |
#26
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#27
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In fact, I can usually see the bondlines in the wing while in
flight, and you can bet any missing lines would get my attention in a big hurry. Just curious -- why are the bond-lines visible in flight? -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
#28
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On Sun, 21 Sep 2003 12:47:52 +0000, Jay Honeck wrote:
In fact, I can usually see the bondlines in the wing while in flight, and you can bet any missing lines would get my attention in a big hurry. Just curious -- why are the bond-lines visible in flight? They're even more visible on the ground. A lot of the bondline is along the edges of structures; for example, the trailing edge of the wing. Bondlines internal to structures (for example, the wing ribs) can usually be discerned by a slight irregularity of the skin. |
#29
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"Jay Honeck" wrote in message news:Y5hbb.533879$YN5.355122@sccrnsc01...
In fact, I can usually see the bondlines in the wing while in flight, and you can bet any missing lines would get my attention in a big hurry. Just curious -- why are the bond-lines visible in flight? When you're in flight, the lower pressure above the wing tends to cause the skin to bulge up a bit, except where it's bonded to the wing. My Cherokee 180 exhibits this behavior. In flight, you can see the wing skin lifted slightly above the rivet line. John Galban=====N4BQ (PA28-180) |
#30
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When you're in flight, the lower pressure above the wing tends to
cause the skin to bulge up a bit, except where it's bonded to the wing. My Cherokee 180 exhibits this behavior. In flight, you can see the wing skin lifted slightly above the rivet line. Hmm. I'm gonna have to check that out next flight. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
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