foam core question

[Lance Van Nostrand]

Mark, 
You are likely to get a lot of input on this,but here's some info:
You really do need to support both ends of the wing tube.  The root side is supported by your root covering (either 1/4" balsa, 1/8" basswood or lite ply with lightening holes).  The end inside the wing is supported by a partial rib that connects the LE to the wing tube.
  I don't know if you see Jim Sheffield, Mike Austin, Mike McGraw or any of the other guys that have AeroSlave planes, but in my 30 page instruction manual I have detailed descriptions of how to build the internal structure, the pros and cons of 3 different spar styles, how to install them, how to make the skins and how to sheet the wing.  You could read over those pages.

--Lance

  ----- Original Message ----- 
  From: Mark Hunt 
  To: discussion at nsrca.org 
  Sent: Thursday, April 15, 2004 9:16 PM
  Subject: foam core question


  Sirs:

  As a newbie to cutting foam cores, I have a question regarding how to strengthen the wing panel.  Does the preferred method include attaching some c.f. strips to the inside of the skins?  Should they extend from the root all the way to the tip?  I know some guys feel it is a must to also use a false rib near the end of the tube sleeve also?  I hear that some guys (r u out there Nat?) are confident without any false rib or c.f. under the skin....?

  I cut the cores earlier tonight (to rebuild my 2M after a mid-air) with the help of a friend, and they turned out just beautiful.  I have a nice plan to machine a drill jig for cutting the spar tube hole...so that's seems to be solved.

  Thanks in advance for the help...


  Mark
  www.geocities.com/markhunt_2000/INSIGHT

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