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U.V Rays and Wood

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Jman

Jman

Site Developer
Joined
Oct 22, 2002
Messages
1,881
Location
Pacific NW, USA!
The following question was sent to me by a fellow HBA User. Anyone have any comments or suggestions for him?

I recently purchased a 35 year old, partially assembled mini cab wooden airplane. (plans -built airplane.) It wasn’t until sometime after my decision to purchase that I became concerned with the possibility of possible weakening of the spruce from exposure to sunlight and hence, u.v. rays. The surfaces are quite discolored but a moderate sanding brings back the original color of the wood. Is there any way to determine the amount of loss of strength that has possibly occurred? The airframe is not discolored but the ribs and spar are quite discolored. Thanking you in advance for your time and reply.
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Jake
 
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