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RV-7A Construction Log
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Date:  8-18-2008
Number of Hours:  2.00
Manual Reference:  
Brief Description:  Spar - Add Platenuts to spar flange

First step seemed simple. Just rivet the platenuts onto the spar flange. But it took me several hours to figure out what they were saying about the counter sinking. I read Van's Forum. I finally figured out I had to:
1) drill rivet holes to #40
2) drill screw holes to #30
3) debur inside only because outside will be countersunk
4) counter sink rivet holes with #40 for flush revits
5) counter sink screw holes with #30 to a diameter of 0.365 - 0.375. I targetted 0.365.

So I started.
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Drilling holes full size #40, & #30

Drilling holes full size #40, & #30

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Deburring

Deburring

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countersink rivet holes.

countersink rivet holes.

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