Wednesday, August 01, 2007

Two hours were spent fabricating tools and drilling the wing root skin into place.

The new "strap duplicator"/"hole finder" is made from two old worn out saw blades. On the free end a partially pulled rivet is trimmed so the nail is only a few mm long, and the head is then filed down to reduce parallax. The flaw with my new design is that the pointy "finder" gets drilled out after a few uses and then requires replacing.

Getting the skin drilled properly was a fairly easy task for three sides. The line that abuts the first rib, the spar doubler line, and the rear channel lines were all easy.

The pilot holes on the root rib side are off by about .25mm, so when the holes are enlarged to A4 everything should be OK.

I think a better method would be to pre-drill only a few holes, use the hole finder on those, and then extrapolate the line, pre-drilling the root skin and then back drilling into the root rib.

Project Status:
Wings: ~140.5h ( 1h, 1h, 0.5h, 2.5h, 4h, 1h, 1.5h, 1h, 1.5, 4.5, 1h, 1h, 2h, 4h, 1h, 3h, 1h, 2h, .5h, 1.5h, 2h, 2h, 2h, .5h, 1h, .5h, .5h, 2h,3h, 1h, 3h, 3h, 4h, 2h, 3h, 7h, 3h, 1h, 4h, 1h, 1h, 1h, 4h, 2h, 2h, 2h, 2h, 1h, 2h, 3h, 2h, 1h, 3h, 2h, 2h, 1h, 2h, 3h, 2h, 1h, 1h, 1.5, 2h, 2h, 3h, 2h, 1h, 3h, 2h, 1h, 2h )
Flaperons: ( DONE! ) 23.5 hours spent ( 3h, 1h, 1h, 1h, 1.5h, 3h, 6h, 3h, 4h, 1h )
Paint Design: 2 hours spent ( 1h, 1h )
Elevator DONE!: ~31.5 hours spent ( 3h, 1.5h, 3h, .5h, 3.5h, 2h, 4h, 1.5h, 2h, 4.5h, 1h, 6h )
Horizontal Stabilizer DONE!: ~28 hours spent, 3 pieces replaced ( 3h, 2h, 2h, 2h, .5h, 1.5h, 3.5h, 1.5h, 5, 4.5, 2h, .5h )
Rudder DONE!, minus horn : ~16 hours spent, ( ~8h, ~8h )
Total Done: ~242h

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