Restoration of old wood wings.

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Prandtly

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Dec 19, 2020
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6
Is it possible to restore old wood wings with failed glue joints. My FP-202 has always been hangared but when stripping the wings for recovering, I have found that the t88 glued joints are failing. Can I just reglue with T88, or do I have to rebuild the wings completely with new wood. The wood is probably 20 or more years old. How old is too old to repair? What is the best way to restore the wings?
 

Tiger Tim

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Apr 26, 2013
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Thunder Bay
IMO condition is more important than age when it comes to wood. Remember that even a ‘brand new’ piece of wood is cut from a 100+ year old tree.

As far as assessing what you’ve got I’m not much help but I can definitely tell you to just do one wing at a time using the other one as an example.
 

proppastie

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Feb 19, 2012
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Are you going to use the same glue or thinking about different stuff ?.....on one hand it lasted 20 yr. on the other hand there are Cubs and Champs much older out there.
 

Dan Thomas

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Sep 17, 2008
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5,790
Fractured glue implies improper cure. Low temperatures, incorrect mixing, maybe expired glue dates. Something's wrong and it might mean that the entire assembly is suspect, not just the fractured joints.

In 1973 I bought a Taylor Monoplane that had about three hours total time on it. It had been damaged while parked or during transport. I found, first thing, that the right wing had massive wash-in, which explained the low flight time; it would have required full right aileron and a bootfull of rudder to keep it halfway level. I took the fabric off and started rebuilding the wings, getting the washout right, and then started discovering that the rib gussets and fuselage gussets would pop off with a little finger pressure. The airplane had been built, it turned out, in a cold basement or garage, using Aerolite urea-formaldehyde glue, which is extremely temperature-sensitive. It didn't cure; it dried, and had no strength. I scrapped the airplane.
 

TFF

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Apr 28, 2010
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Memphis, TN
You should be able to reglue if you can prep it. The question comes, the cause? Too much glue, too little glue, bad mix of glue? It will depend on how deep you want to go. Local fix or take it all down like a new kit.
 

Pops

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Jan 1, 2013
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I bought my SSSC back a few week ago, after the owner damaged the fuselage with broken longeron, and broken plywood on the right side of the fuselage. Decided it was easier and less work to just build a new fuselage. Also don't have to think about asking yourself while you are flying , " Did I miss something , or is there a broken part where I couldn't see".
No epoxy T-88 glue joints broke. All was the wood.
 

Richard Roller

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Joined
Feb 15, 2018
Messages
47
Location
Olathe, Ks.
While repairing the Pietenpol's tail I had to remove several existing doublers. When it was time to reassemble I shaved the existing longeron and station pieces with a wood plane set to take the thinnest curl of wood off I could manage. Then reglued the new gussets in place. Several inspections since and all looks well.
 
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