[NSRCA-discussion] Wing Construction

[Nat Penton]

I have  double sided wing tape, about 4" wide - used for attaching wing skins - that has never been used. Any recollections regarding this stuff ???

I could do a sample to determine weight. Am wondering about tenacity and longevity ???  Nat 
  ----- Original Message ----- 
  From: rcmaster199 at aol.com 
  To: nsrca-discussion at lists.nsrca.org 
  Sent: Wednesday, November 07, 2007 8:21 AM
  Subject: Re: [NSRCA-discussion] Wing Construction


  The few grams one would save by not applying glue to the skins in the open bay areas isn't worth the hassle, in my experience.

  I use the roller for skinning and apply a lite even coat to the sealed skin and then use the residual wetness on the roller to touch the foam. It helps produce a more even, more consistent joint. Skins are sealed using a lite-med coat of hairspray. I have also used nitrate dope for sealing which works extremely well, except I wait 2 days to fully flash the solvent.

  A quick point on wing weight.... my 500 sq inch panels usually work out to weigh around 8.5-9.0 ozs each ready to cover. With reasonable technique, the panels come in at around 13 to 13.5 ozs, fully painted and ready for servo and linkage. There just isn't much more weight savings to be had in wing construction. That's one reason why I usually concentrate my weight savings approach to the fuse. The fuse often offers much greater opportunity for savings than wings do. I often measure the weight savings in ounces, not grams, when constructing the fuse.

  regards,
  MattK






  -----Original Message-----
  From: Karl G. Mueller <kgamueller at rogers.com>
  To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>
  Sent: Wed, Nov 7 8:55 AM
  Subject: Re: [NSRCA-discussion] Wing Construction


  Lance,

  Do you apply the glue to the skins or to the foam core in case of a
  cored (with cut-outs for weight saving) foam core. I thought that the
  amount of glue spread on the skins in the areas that do not make 
  contact with the foam would be unnecessary weight. It will strengthen
  the skin some.

  Karl G. Mueller
  kgamueller at rogers.com

    ----- Original Message ----- 
    From: Lance Van Nostrand 
    To: NSRCA Mailing List 
    Sent: Tuesday, November 06, 2007 11:13 PM
    Subject: Re: [NSRCA-discussion] Wing Construction


    Foam roller, my friend.  a squeegee will force resin into the pores and away from the joint.  Only a roller applied fast and light can meter the material properly and keep in on the surface.
    --Lance

      ----- Original Message ----- 
      From: Nat Penton 
      To: NSRCA Mailing List 
      Sent: Tuesday, November 06, 2007 9:32 PM
      Subject: [NSRCA-discussion] Wing Construction


      To skin a foam core with contest grade balsa does anyone have a preferred way to determine when the amount of epoxy applied is adequate - using Easy Lam epoxy. I have been reluctant to use a squeegie, afraid of scoring the balsa. Would appreciate any comments.                            Nat

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