Sidecar Flip
Living Legend
was thinking about using expandable foam or injecting bars with silicone to prevent chaffing when running internal wires.
You'd have to make sure whatever you use is compatible with the insulation on the wires. Expandable foam like Great Stuff has a formaldehyde base so it's a solvent and may attack the insulation. I'd try some on a wire first. If you did foam the wires in place in the tubes, you'd never be able to extract them. I think what I'd do is get some Heyco push in strain relief's to immobilize the wires at the lower ends of the bars. At least then you could access the harness if you needed to. The strain reliefs will keep the wires from moving when the bars are oscillated back and forth. The wires coud move inside the bars themselves but just a little. There would be no to and fro movement with the Heyco's installed. Heyco is in Toms River, New Jersey. They are the largest supplier of injection moulded electrical panel acessories in the world. I don't have their web addy on this computer but you can Google 'em.
Why don't you just let the moths out of your wallet and buy some of my aluminum wiring harness clamps?