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Chris Owens - Bearhawk
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Date: 1-29-2012
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Number of Hours: 5.00
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Manual Reference:
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Brief Description: Aft Ribs, Flap Ribs, Aileron Ribs
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After I finished the .032" center ribs, I moved to the aft ribs, flap ribs, and aileron ribs. They were all routed from the same form, as all of those ribs are nearly identical. The obvious difference is that the flap and aileron ribs are shorter than the aft ribs.
Although I don't have a photo of them here, after the flap ribs were routed, I marked them with a Sharpie where they needed to be cut off at the flap spar and drew a line across one of the ribs. I removed them from the routing jig, bolted them to a sacrificial "cutting board", and ran them under the bandsaw, cutting all of them to the same length at once. Considering I had 37 of them bolted together (36 + 1 extra), I had to go slow to keep the blade from wandering during the cut. It went amazingly straight.
A quick bolt in the vice and a few passes with the file, and the whole stack was as flat as a pancake and smoothed out from the bandsaw blade marks.
Repeat above for the aileron ribs.
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Aft ribs (flaps and aileron ribs look the same, just a little shorter - same jig)
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Rib family photo (nose ribs mysteriously AWOL).
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Proud papa!
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