Wing tube socket stop repair ideas

[neil fosnaugh]

FWIW, I lost a plane that I bought used that had a 2-56 bolt tapped into the top center of the tube. After several hundred flights the aluminum tube broke directly through the hole. Ugly. Was at the bottom of an outside loop, so the tube broke on the tension (toward the top of the plane) side. Neil

Bob Kane <getterflash at yahoo.com> wrote:I would be concerned about weakening the wing tube by drilling a hole near the center, the compression and tension forces are at their maximum. But your experience shows it works, the tube must be much stronger than it needs to be. 

Dennis Cone <cone.man at verizon.net> wrote: Something I have been doing for several years is to install a small piece of
light ply to the tube sleeve inside the fuselage and drilling through it and
the sleeve and then tapping the wing tube. This not only eliminates the need
for wing tube stops, which save weight, but also stops any turning of the
tube in the sockets. Just don't over tighten the 4-40 socket screw.

Dennis Cone


-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On
Behalf Of jivey61 at bellsouth.net
Sent: Monday, May 17, 2004 11:15 AM
To: discussion at nsrca.org
Subject: Re: Wing tube socket stop repair ideas

Bob
If you do this be very careful not to get any CA on the inside(sides) of the
tube. It will cause the tube to get tight in this area.May have more trouble
than you wanted.

Jim Ivey
>
> From: Bob Kane 
> Date: 2004/05/17 Mon PM 01:00:23 EDT
> To: nsrca 
> Subject: Wing tube socket stop repair ideas
>
> I have a minor problem with a wing tube socket. The stop at the inside end
of the tube is a 1/4" piece of wing tube material with a slot cut in it so
it fits inside the tube and glued in place. After two seasons of flying, for
whatever reason, the wing tube can now push itself past this stop and wedge
in the tube socket. It is a minor annoyance, but I was pondering possible
fixes. One was to cut teeth into an old wing tube and grind a bit of the
existing stop out, then pushing an 1/8 plywood disk to the bottom of the
tube and securing with a few drops of foam safe CA.
>
> Anyone run into this problem before and have alternative methods of
repair? Thanks.
>
>
> Bob Kane
> getterflash at yahoo.com
>
> ---------------------------------
> Do you Yahoo!?
> SBC Yahoo! - Internet access at a great low price.
>

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Bob Kane
getterflash at yahoo.com

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