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Buck's RV-8
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Date: 10-30-2007
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Number of Hours: 5.70
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Manual Reference:
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Brief Description: Roll bar; rear seat; rudder pedals
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I began the process of spreading the rollover bar today. (It must be spread 1/4" to fit the fuselage.) I stood it on the floor and attached a pair of ratcheting tiedown straps to each side, then attached these to some steel columns in my hangar. I was able to spread the bar 1", but after releasing the pressure, the bar sprang back most of the way. I plan to leave the bar spread like this for the next two days while I'm away, then see how the spring-back goes. If I can't get good results this way, I'll have to locate some heavier-duty straps and ratchets. I've heard that I'll need about 3" of spread to get a 1/4" final result.
Next, I fabricated the F-833E seat-back angle and F-833F doubler for the rear seat, then drilled the F-833B L/R rails to the F-433A seat back. I clamped the two hinge segments to the bottom of the seat-back, and test-fit them into the fuselage. I'll attach the hinges next time.
Finally, I continued working on my custom pedal extensions. I trimmed the components, clamped and drilled them together, deburred them, and marked them for lightening holes. I also marked them for a 20 degree bend and attempted to do the bends. That's where my small bending brake demonstrated its limitations. Despite its best efforts, it was unable to put even the slightest bend in the 1/8" aluminum sheet. I'll have to borrow a friend's large, industrial brake next time.
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Spreading the roll bar with ratcheting tiedown straps. I might need some more spreading power.
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Test-fitting the rear seat to the attach-hinges on the floor.
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The components of the pedal extensions, ready for bending and riveting,
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