cf tubes

[John Ferrell]

You might have to get a little creative on the stab tube. You might find someting suitable in the PVC plumbing area like toilet supply lines. PVC softens pretty easy with a paint stripper heat gun. Use a couple pliers to form a ring to fit. Chip Hyde and Dick Hanson both have recommended that stabs be retained with tabs at the fuse sides. This allows for stab incidence adjustment with shims. 

I am no fan of stab tubes. It is too easy to get tail heavy!

John Ferrell    
http://DixieNC.US

  ----- Original Message ----- 
  From: Ed Deaver 
  To: discussion at nsrca.org 
  Sent: Saturday, June 26, 2004 11:51 PM
  Subject: Re: cf tubes


  Will try this.  

  What size PVC do you use for the stab tube?  

  Thanx

  ed

  John Ferrell <johnferrell at earthlink.net> wrote:
    I prefer the PVC alternative.
    1- Slice a ring (about 1/4 inch) from a slightly oversized piece of PVC tubing.
     2- cut a segment out of the ring (about 1/4 or 3/8 inch) so that you can compress it a little and slide it inside the tube. 
     3- drill a little undersize, sharpen a screw to make it self tapping. 

    Cheap, easy to replace, field repairable (rotate the ring & re-tap). Also, the PVC does not seem to allow a loose screw to come out. 

    John Ferrell    
    http://DixieNC.US

      ----- Original Message ----- 
      From: Ed Deaver 
      To: NSRCA Disscussion 
      Sent: Saturday, June 26, 2004 5:32 AM
      Subject: cf tubes


      To save weight, I am switching to the PBG CF wing and stab tube.  In this plane I already have a 4*40 bolt in the wing and stab as my fastening method.

      Can you drill and tap these tubes successfully wicked with thin CA after tapping?  Realize the stab tube will only be taken off rarely.  One of the wing bolts will be removed on a regular basis.

      Or, do I have to glue a piece of ply to the inside of the tubes and tap that?

      Before it comes up, I do not want to change my mounting system unless it absolutely needed.

      Thanx in advance.

      ed
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