Wiring Chase

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Last Update:

May 12, 2011

 

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I went to the local Airplane Depot to get some 1/2” thin wall PVC tubing but as I looked around I found some 1/2” PEP tubing also. Comparing weights, I would guess the PEP weighed about half of the PVC. I found that the 3/4” PEP weighed about the same as the 1/2” thin wall PVC, so I opted for a larger diameter for the given weight since I’m thinking of running both wiring and 2 pitot lines to the wing tip. The PEP tubing is also a bit more flexible than the PVC.

Instead of Adell clamps and bolts, I decided to bend some shallow channels out of .020 aluminum. I placed the tubing in the center of the large lightening hole to give me as much room as possible for riveting the skins onto the nose ribs.

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To secure the tubing to the channel I found some grommets that worked just about perfectly and drilled the correct size hole in the channel. I may put some silicone caulk on either side of the grommets to be sure the tubing stays put. I used a grommet about every five bays for a total of five per wing.

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