[NSRCA-discussion] Eclipse wing attachment

[Anthony Romano]

Pretty standard arrangement actually. Not a lot of load on that 4-40 bolt, the most important thing is that it stays in place. Over time the thread in the thin wing tube will wear but you can just rotate the tube and re-drill. Most usually glue a small block of wood or piece of PVC inside the tube to hold threads or catch a blind nut. 
If it makes you feel better you could add a bolt through that leading edge hole. Just make sure it stays in. Had a nylon 1/4-20 back out of one plane and the end result was very messy.
 I prefer the bolts in the tube type of set up to avoid having to take the canopy off every time I assemble/disassemble the airplane. 

Anthony



Date: Sun, 23 Mar 2008 09:39:10 -0500
From: wilsorc at gmail.com
To: NSRCA-discussion at lists.nsrca.org
Subject: [NSRCA-discussion] Eclipse wing attachment

I just bought a used CA Models "Eclipse" with a YS 140, Hitori pipe etc. 
I have a question about the wing attachment.
Each wing half slides onto the aluminum center tube and there is an incident adjustment peg on the fuse that the trailing edge of each wing fits over.  
The aluminum center tube is tapped for a 4-40 bolt about 8 inches out from the fuse on both sides.  Once the wing halfs are slid onto the tube, theses 4-40 bolts are inserted through the top of the wing.
 
That's it!  Kind of a cheesey arrangement.
 
There is a hole in the fuse at the leading edge of the wing and a corresponcding (plywood reinforced) hole in each wing half.  However, there isn't any hardware associated with these attachment points.  I think something is ovbviously missing and would appreciate it if anyone with "Eclipse" experience could help me out.

 
Thanks,
Bob Wilson
 

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