C/F wing tubes

[Terry Brox]

Dan,
      I am using one of Lamar's C/F wing tubes and just cut a piece of PVC pipe, cut a small piece out, collapsed it into the tube and "Zapped" it in place. I then drilled and tapped for 6 32. I have quite a bit of time on this set up and no sign of stress yet. I also, and always have, tapped the hard point in the wing so there is a lot of "threads" all the way through. 
      Also, Lamar sells a really neat nylon insert that fits his tubes perfectly. 
                            Happy building,  Terry
  ----- Original Message ----- 
  From: Dan Curtis 
  To: discussion at nsrca.org 
  Sent: Sunday, November 17, 2002 4:39 PM
  Subject: C/F wing tubes


  When using a carbon fiber wing tube can a person use the screw hold down in the wing method or are we limited to using wing holds in the fuselage?  In other words can a small block of wood be placed in each end of the tube and then the tube and wood block be drilled for a 4/40 screw (self tapping) or is the carbon fiber to prone to crack at the drilled hole??

  Thanks
  Dan
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