[NSRCA-discussion] Wing tube phenolic repair "help"

[Fred Huber]

Mix appx 75% poly with 25% yellow glue... so the poly has water to work with.  The other stuff in the yellow glue helps it stay mixed while you squirt it in.  (I use that mix to 50-50 for joining foam cores that have gaps  fills gaps very well)

Source for a syringe that works: the type used in cooking (sometimes called flavor injectors).  The large bore nedle lets the glue flow better than the small ones used in ink jet cartridge refilling.  You;ll be drilling an appx 1/16 to 3/16 hole for each injection site. (depending on needle size)

Some excess glue may foam up out of the hole (if it doesn't you may not have injected enough)... it trims off easilly.  Peels from monokote with no trouble.
  ----- Original Message ----- 
  From: Robert Mairs 
  To: NSRCA Mailing List 
  Sent: Friday, August 11, 2006 5:24 AM
  Subject: Re: [NSRCA-discussion] Wing tube phenolic repair "help"


  Drill small holes on the bottom side to the tube and take a syringe filled with poly glue and squirt it in.  Glue will expand and fill the voids.


    ----- Original Message ----- 
    From: Anthony Abdullah 
    To: NSRCA Mailing List 
    Sent: Thursday, August 10, 2006 10:42 PM
    Subject: [NSRCA-discussion] Wing tube phenolic repair "help"


    I was just about finished setting up my Odyssey when I noticed that the wing seemed a little loose. If I hold the fuselage the right wing panel can wiggle up and down a noticable amount. I thought that maybe the tube mount at the fuse was loose but that was not the case. As it turns out, the phenolic in my completed wing is loose about 3/4 of the way down and is wiggling around. It almost feels like the foam in the sheeted foam core wing has been somehow dislodged and the phenolic is in just a hollow cavern instead of solidly glued to the wing. It is still glued solid at the root so it won't slide out, but it obviously can not be flown in that condition.

    Question:
    How do I go about repairing the foam that the phenolic mounts to? The wing is sheeted, covered, and trimmed (complete) and I would like to keep from having to start all over again. Getting out the old one will also be an issue as it is still partially glued in. 

    I am open to any and all suggestions.

    Thanks in advance
    Anthony   


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