Brief Description: Pitot static plumbing and electric trim cable
The airspeed system compares dynamic pressure with static pressure to measure a difference and hence derive airspeed. The static ports are holes in relatively undisturbed air on the sides of the fuselage. There are two so that the static pressure is "averaged", in case a sideslip (for instance) introduces a difference between one side of the plane and another.
So much for theory. In practice we connect a plastic tube from each static port to a "T-piece" and the "averaged" pressure is transmitted to the airspeed unit via a tube on the third leg of the T-piece.
Picture 1 is the attachment to the static port (partially pulled rivet). I used a technique described in the website to secure the attachment of the first tube with a larger diameter collar stretched over the top. There's no significant air pressure, so the attachment doesn't need to be "strong", just secure.
Picure 2 shows the T-piece connecting the left and right port to a larger diameter tube which heads forward to the instrumentation (eventually).
Picure 3 is a poor shot of the installed tubing, together with the installed elevator trim cable. The plans provide details on how to route the cables/plumbing through the J-channels and secure it with cable-ties. The ties are currently loose, as additional cables may be routed through these.
