15-03 Rear Spar Doublers

The doubler plates need to be clamped securely in the correct postion on the rear spar and then match drilled.

fullsizeoutput_33e9I used my cordless drill and the drill reflection to maintain perpendicular holes.


Pushrod Holes

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Two of the doublers cover the aileron pushrod holes in the rear spar, so these need to be cut out in the doublers.

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Hole position marked.


 

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I used a step drill to remove the bulk of the material, and finished off by filing.

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Then I clecoed the doublers back into position on the spar and gently filed the doubler hole to match the spar hole exactly.

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