FUSELAGE CONSTRUCTION - Page 19.
August 15, 2003: I worked on the main
bulkhead that came with the wing kit as part of a matched set with the wing spars.
Part of the work here was to modify the two machined aluminum brackets that hold the
control sticks. When I had them assembled, I calibrated the sticks to be
parallel. I have the control assembly just sitting on top of the bulkhead for this
Here you see both bulkheads and the associated parts that I worked with today
installing plate nuts and opening holes for fuel lines and electrical connections. I
also made the tubular spacers that keep the middle section bolted at the proper clearance.
I have some oak that I have to cut to the proper dimensions to represent the wing
spars when I finish bolting all this together for further assembly later with the skins
August 18, 2003: I finished making hardwood
spacers to represent the wing spars, then fitted the main wing attach bolts to the two
F904 bulkheads shown in the photo above. After marking all the bolts to be able to
return them to the same places, the bulkheads were disassembled and set aside. All
the non-anodized parts will be primed before assembly. Today also saw the beginning
of work on the F705, which is behind the seats and also attaches to the rear spar of the
wing to set the wing incidence when the wing is finally attached to the
fuselage. The photo below
shows my progress as of quitting time tonight.
That aluminum bar stock running across the bottom of the assembly had no holes in it when I started on this section. (The wide-angle setting of the camera zoom lens makes the straight bar and table edge look bowed.) I also fabricated two spacers then drilled and trimmed the F605C doublers that form the attach points for the wing rear spar at the extreme left and right sides of the assembly shown above. Those eight gray painted parts in the middle of the picture are the steel seat belt attach brackets. They will be bolted to the F705B doubler you see in this assembly. Total time of aircraft construction is 597.6 hours, with an additional 58.7 hours of other prep work including unpacking, inventory of received parts, and building all the work tables, jigs, and saw horses. Total time on the RV-9A project = 656.3 hours.
August 19, 2003: I finished the work on the
F705 bulkhead group and moved on to the F706 bulkhead, which is at the rear of the baggage
area. This also includes the area where the elevator push rod connects to a
bellcrank and another push rod that connects directly to the elevators. All these bulkheads
have holes and bushings for the rudder cables to pass through on the way to the tail
itself. The 5/8" bushing below is the one that allows the elevator trim cable
to pass from the baggage area sub-floor into the tail cone area.
Here is the full view of the F706 baggage bulkhead. The close-up
image above is
at the bottom center of the photo below.
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