Installed wing conduit

November 27, 2011 – I started pulling the conduit through the wing ribs. I’m using the Van’s conduit which is basically the corrugated black plastic you can buy to contain computer and stereo wires, but this stuff isn’t split. This stuff is a pain in the butt to pull through. The holes in the ribs are 3/4″, and the corrugation large diameter is .810″, so it’s a tight fit pulling this through, and it’s noisy. I sure like how it looks, though, and it’s very light.

I have read about how people have cut holes in it to accommodate wires exiting and entering at different points in the run. I decided that I really didn’t like that idea, since I’d have to worry about chafing, so I interrupted the conduit in the left wing bay with the aileron bellcrank. The stall warning wire enters at that point. I also will probably install an autopilot servo there in the future. Here’s the ends of the conduit in that bay:

And here’s a general picture of the conduit installed in the wing:

Here’s the end of the conduit at the outboard rib:

Once the conduit was installed, I pulled the wiring through. All I have at the moment is the landing light wiring and the stall warning at the mid-point of the left wing. I used the cotton ball trick that I’ve read about. WOW! That works great!

I tied a cotton ball to a string and placed it at the inboard end of the conduit.