Sv: [fairchildclub] Old glue inside a 60 year old stab

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paul.pinato@swipnet.se
Posts: 6
Joined: Tue Aug 24, 2004 12:44 am

Sv: [fairchildclub] Old glue inside a 60 year old stab

Post by paul.pinato@swipnet.se »

'hello David
I am also doing the stabilizer but I do not recognise your problem. I am going to remove all the metal fittings and will check the glue. As my stab never had been repaired it did not have any fabric. I chould see all the military paint layers down to the plywood. Olive drab and Neutral grey. I don´t know if the UC61A intended for the Eropean WWII was treated different. On the underside it still had all the drain holes still open.
I made an unseintific test. I atached the stab on the bench at the stab-attach points and sat on the tip. 210 lb. I did the the test by ataching the stab under the bench and with the same load. I chould not hear any cracking or other noices. It deflected only a 1/4".
If normal or not I don´t know. It must stand 3.8 g.
on the max down load and weight of the tail.
Paul
SE-AWS AAF 341840
>
> Från: "David Stroud"
> Datum: 2004/11/24 Wed AM 04:35:32 CET
> Till:
> Ämne: [fairchildclub] Old glue inside a 60 year old stab
>
>
> Lads, I pulled the fabric, then the wood skin off my vert stab last night with
> surprising ease. One rib was slightly cracked, but pn 12, (sec 111) the tail rib
> was fully split from the rear spar up to the next vertical stringer, no.10. The crack
> started from where some lout drilled a clumsy hole up thru the lower most bottom
> rib to gain access right up thru the aft end of the stab. Witness to this was a safety
> wire going from one end to the other perhaps in prep for feeding a wire or something
> up through the area.
>
> What interested me more was the way the plywood let go of the ribs and structure
> so easily. The ply was in good shape but it let go of the ribs so easily it was a concern.
> I don't know what was glue or varnish, but it dropped off at the joints of the ribs / skins
> so easily that I broke no parts while peeling the plywood off the stringers or ribs.
>
> The logs never showed any rebuild of the vertical or horizontal stab which are ply
> covered. Many other parts have been documented as rebuilt and will receive due
> review, but it is clearly apparent that the original glue joints of this 1941 example
> are not intact in my example.
>
> David Stroud, Ottawa, Canada
> Christavia C-FDWS
> F24 C-FDAE in restoration
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