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RV-7 Construction Log
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Date:  7-6-2014
Number of Hours:  3.55
Manual Reference:  p. 8-10
Brief Description:  Longerons

Today, I finished marking the longerons for depth of countersinks for dimples in the fuselage skins. I also drilled the 5th "keeper" rivet hole (counting from the aft end) that I missed for some reason when originally drilling the longerons.

I then got out my dimple coupons, countersink cage, and a scrap of 0.125 aluminum and made a list of countersink adjustments for each combination of metal thickness and die type. That list can be found in the "Tools" section of my log on this date.
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A sample of the photos documenting the countersink depths in the longerons.

A sample of the photos documenting the countersink depths in the longerons.

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