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Wendells RV-6A
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Date:  3-25-2018
Number of Hours:  6.00
Manual Reference:  Wing Install
Brief Description:  Fit wings to fuselage 2nd of 4 times-1

Dropped 4 plumb bobs and started setting correct sweep. Left wing good for now. Right wing outer plumb bob was forward one inch from the line. Wing would not go back. Looking at the 1/8 inch F605 bar coming out of fuselage, it was clearly too long and it was hitting the wing rib. I wanted to know how much change at the rear spar would impact the outer wing sweep. Couldn't go deeper, so I inserted 1/8 spacer to push the wing even more forward. 1/8 inch changed the sweep 9/16 at the wing end. I assume if I take 1/8 off the interference, it will allow the same 9/16 reverse sweep. Actual experiment also showed that if I added .200 spacer, the wing went forward a full inch. I just couldn't bring myself to take off .200 from the obstructiing fuselage F605.... yet.... I was concerned with having SOME kind of margin for the ultimate 5/8 edge clearance minimum when drilling the eventual 5/16 bolt hole here.
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bottom plumb was sitting forward one inch.  Rest were in line.  Need to fix.

bottom plumb was sitting forward one inch. Rest were in line. Need to fix.

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Tested results of adding spacers at rear spar root.  1/8 spacer moved wing 9/16.  .200 moves wing 1

Tested results of adding spacers at rear spar root. 1/8 spacer moved wing 9/16. .200 moves wing 1".

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The F605 was too long. It hit the wing rib and left the wing sweep 1 inch too far forward

The F605 was too long. It hit the wing rib and left the wing sweep 1 inch too far forward

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