Wing Attach Fittings

Started August 15, 2005

The wing attach fittings are formed from and.080" and .090" thick 4130N steel plate and welded to the top fuselage longerons.  The fuselage was first levelled side-to-side in preparation for installing the wing mounting brackets..

Here are the front wing mounts after cutting and shaping:

The holes are just drilled to 1/4" for now and will be match drilled to the wings later.

These were then clamped in place on the fuselage with a 2 foot long 1/4" rod to keep proper alignment.  The right one was tack welded in place first, with the centerline of the holes aligned with the centerline of the top longeron of the fuselage:

Then a clear piece of tube was filled with food color dyed water and used to get the left side mount in the proper location:

The rear mounts were then aligned using the same techniques and tack welded in place.  Make sure that you have exactly 32" (or whatever your wing spar spacing is) in between the front and rear mounts:

The picture shows the water level in place and the rear mount being measured from the front mount.  32" from the inside of the forward half of front mount to the inside of forward half of the rear mount.

Here is the completed front mount all welded up:

Here is the rear mount all welded up:

Wing Mounts

Completed: August 20, 2005

Total Time:  24 hours

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