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Left Wing V

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Jan 1, 2006
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Austin, TX
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Keeping everything square...

All the spar fillers have now been glued onto the top of the wing. I cut them as flush as possible to the top of the adjacent ribs, then used a long sanding block to finish. The 1/4 inch ply fillet that goes on the spar at the I-strut location was a touch too proud for sanding, so I flushed that with a router.

Next I fitted the tip bow. To cut the tips off the ends of the spars, in order for them to marry up to the tip bow, I made a primitive compass from a length of 3/4 x 3/4at 21R radiuswith a nail one end located in the center of the rib, and a pencil attached to the other end, rotated it around, then markedon the sparsaccordingly.

It's a good idea to clamp in a square piece of lumber at the front of the rib [see pic at right]and at the tail, this stops the rib from flexing while fitting the bow - aslight out of square nose rib isn't the end of the world, but the rear has to be square because of the aileron bay.

I then drilled the I-strut holes using a jig I'd made for the right wing, see here

Finally, I built up the spar tips to the bow, ready for shaping when cured.

I-strut drill jig...

Tip filler...

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