copper fuel lines

The guy that said they use copper lines on jet aircraft doesn't know what he is talking about!
I would not use it on any long runs that are subject to vibration and movement.

 

With much respect to Deddybear...

Although he is using copper lines, it appears his fuel log is rigidly mounted and the lines are short runs with long acs in them. In this case, I would say that the lines are sufficiently short and supported as well as the fuel log. While I still would say copper nickel alloy would be better, his setup is probably as safe as it could be with copper lines.

I wouldn't do it, but it was well executed and I would not worry about his particular setup that much. I also wouldn't take his excellent work as a green flag to get 100' of copper tubing from the hardware store and plumb my entire car with it.

 

i use copper sometimes. in fact i did on my blown model a... it was easy and it gave it the vintage look. my opinion is this: copper is soft, its easy to make look really nice, it does in fact get hard however. but its fine for certain things. if your building a fuel manifold with lots of tight bents and fitings etc ( like mine) its perfect its cannot vibrate, it cant flex. its just stays tight. ive seen lots of copper on cars.. but it originates even into old farm tractors. many of my old tractors have copper fuel line.. and they were abused in rough fields for many many years twisting and flexing.

its not the safest thing in the world, but neither is stuffing a 300 horse engine in an old car, or going 90 miles and hour on bias ply tires , but we do it anyways