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Dave's RV-7A Builder's Log
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Date: 8-28-2010
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Number of Hours: 5.00
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Manual Reference:
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Brief Description: Seat construction
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I started this morning by picking up where I'd left off on the seats. The first order of business was to peruse the plans again--for some reason the plans for the seats are not very intuitive to me and I wanted to make sure I got them right. The builder's manual is of little value on the seat backs, so I decided to start with the critical parts first and build from there.
One thing I don't get is the way the hinges are called out in the plans. Based on the the length of the hinges and the alternating manner in which each half of a hinge joins the other, there is going to be a "top half" and a "bottom half" for all of the hinges on the seats. The plans are not terribly clear due to the amount of lines and text callouts, so there is a bit of guesswork involved. I finally decided that the hinges were not the most structurally critical piece of the aircraft, and that I was free to make them work in the best way for me. So, that's what I did.
Aside from the seat backs, which come pre-cut and formed, all of the hinges and angles need to be fabricated for both seats. This means lots of measuring, cutting, fitting, clamping and drilling, so I spent the rest of the session working on the seatbacks, finishing the day with only a little left to do on the aft attach brackets.
I wore out my bandsaw blade, so I will be buying a new one before the next session, and I have a lot of priming to do, so that will be on the agenda soon.
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Attaching hinge and angle to seat back
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Using a fly cutter to add lightening holes
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Seat backs drilled and awaiting riveting
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