PBG carbon wing tube for IMPACT

[Grow Pattern]

Peter,
            You are in a catch-22 situation, as you have noted. If you thicken the CF tube for both wings then you can't push it through the center tube in the fuselage. The advice to thicken the tube with CA only works if the center tube also has/had slack. 

You can thicken the lining of the tubes in the wing with a swab on a stick. Use medium CA to give yourself some time to swirl it around. It really only needs to be tight at the root of the wing and where the tip of the CF tube reaches into the wing

MAKE ABSOLUTELY SURE that it is cured - I use can-spray-kicker - and then try the tube. If it gets too tight you can sand it out with sandpaper on a broom handle. I use the sticky-backed sand paper that comes in rolls for the ali-sanding tools.

Personally I would use the center tube that came with the plane. The weight saving of center tube will be miniscule.

Regards,

Eric.
  ----- Original Message ----- 
  From: Rcmaster199 at aol.com 
  To: discussion at nsrca.org 
  Sent: Monday, February 28, 2005 8:50 AM
  Subject: Re: PBG carbon wing tube for IMPACT


  In a message dated 2/28/2005 5:32:19 AM Eastern Standard Time, pentagon.systems at bigpond.com writes:

    Hi All,

    I have a PBG 30mm carbon tube for my IMPACT which is 35 grams lighter than
    the original. Unfortunately it is a little loose in the existing wing
    sockets. What is a good technique to fix this? I don't want to add anything
    to the tube itself otherwise I won't be able to use the carbon sleeve
    supplied. 


    Regards,

    Peter 

  Peter, I have run some ca on the tube to tighten up loose fits. Then a little fine sanding will produce the nice slip fit you are looking for

  MattK
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