Wings: Fuel Vent Lines, Pitot tubes and Flap Cables; Rib Final Install

The flap cables and pitot lines were installed in the wings prior to covering. These lines are routed to the aft root end of the wing where they will be hooked up when the wings are attached.
I installed the aluminum fuel vent lines that extend from the top tee on each fuel tank and routes through the wing through rubber grommets mounted on the ribs to daylight at the bottom of the wing. A section of line also extends from the tee to the wing root.


I zip-tied the flap cable (black) to the compression/diagonal tubes. The flap cable end on the wing will be retrieved from inside the wing following covering. The flap cable end and remaining cable from the wing root side was pushed and stored inside the leading edge spar.

The static/pitot lines (white plastic) were installed in the left wing through brackets riveted to 6 outboard ribs and zip-tied to the diagonal tube leading to the aft wing root. The pitot tube was temporarily installed to fitup the plastic lines. The Pitot tube (not shown, will install following covering) projects into the air from the LE spar and measures differential air pressure in the tubes. One tube is an indication of ram air which varies with velocity and the other measures ambient air pressure. The difference in pressures can be used to determine air speed.

I also was finally able to rivet and final install all of the ribs to the wing frames. Due to clearance problems, I needed to obtain a close-quarters angle drill and a 16" #30 drill bit. The long bit has proven very useful as it can be deflected around obstructions to drill holes. Therefore, the entire wing frame structure is complete.

My next step will be to bond sheet metal to the LE spars. I'm not looking forward to this phase as it will involve the use of liquid adhesives and clamps.