running new brake line questions

[bagged01extcab]

Ok, I have always heard everyone say "don't use compression fittings on brake lines", but why? I would think that stainless steel tubing and compression fittings would be safe for the brake pressure? Exactly how much pressure is your average brake system? I need to run all new lines and repop lines will not work as I have done to many mods to the frame. I have 1/4" ss tubing but my flaring tool would never flare the ends. I thought that I had seen some aluminum brake lines somewhere but cant find it. Suggestions?

Thanks

[oldspowered67C10]

Youre joking right, brake pressure is in the thousands of psi so compression fittings and aluminum tubing are both terrible ideas. The best set up is ss tubing and ss AN fittings(37 degree flare). I dont even like 45 degree double flares.

[bagged01extcab]

How many thousands of pounds? SS tube and compression fittings are rated for 6000#

[bagged01extcab]

Here is a pic of the ss tube fitting.


And here is a link to the psi rating. On the top of page 4, look at 1/4" seamless stainless tube chart @ .035 wall thickness, as this is what i was wanting to use. Oh, and I was wrong! IT is only rated for 5100 psi. I just don't know what psi an average brake system is. I thought it was around 3000 # but not sure.

http://www.swagelok.com/downloads/we.../MS-01-107.pdf

[jlaird]

why are you trying to reinvent the wheel? With the money you are going to spend on those fittings, you can buy a good Ridgid Flaring tool that will flare ANYTHING you throw at it.

[bagged01extcab]

I already have the fittings and tubing sitting here. They didn't cost me anything, as a company I worked for had some left over after a job and gave it to me. It was cheaper to replace it than to have it shipped back to there main office. I used the 1/2" for my airlines, 3/8 for the fuel lines and was wanting to use the 1/4" for the brake lines.