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RV-7 Construction Log
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Date:  6-15-2013
Number of Hours:  7.80
Manual Reference:  p 8-1
Brief Description:  Aft Fuelage Bulkheads

Nearly two weeks since I worked on the RV-7...

Today I edge and hole deburred the aft fuselage bulkheads. I also fluted the top corners of the F-706, 707, and 708 bulkhead. The tabs on the bottom corners of the F-706, 707, and 708, and the top corners of the F-707 bulkhead halves overlapped and required trimming with my sheet metal shears (photos 1 & 2). All aft bulkhead sheet metal parts are now ready for scuffing, cleaning, and priming of the faying surfaces. I'll completely scuff, clean, and prime the non-alclad parts.

I received my two replacement seatbelt anchors last week, and fit and drilled them to the bottom of the F-705 bulkhead and rear spar carry through bars.

I took the F-711 bulkhead with HS attach bars to the airport to test fit to the horizontal stabilizer to ensure adequate edge distance on the stab attach holes. All looked good, so I trimmed the bars to length. I then laid out and drilled pilots for the HS attach holes. OOPS! I drilled the bottom holes exactly 1 inch too high - 1-7/16 inches from the top rather than the required 2-7/16. Since these bars do hold the horizontal stabilizer to the airplane, I'm going to replace the parts. What's another $20???
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Before trimming tabs.

Before trimming tabs.

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After trimming tabs.

After trimming tabs.

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Aft fuselage bulkhead parts ready for scuffing, cleaning, and priming of faying surfaces.

Aft fuselage bulkhead parts ready for scuffing, cleaning, and priming of faying surfaces.

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