[TheForge] hydraulic lines

[Howell Steve]

Cameron-
I have run 'hard' steel hydraulic lines re-doing the brakes on a '66 Mustang~
I'm also thinking about running steel lines to re-do a nice H-frame press that I recently bought off of a machinist. He had an automotive power steering pump run by a 3hp, 3ph motor that develops 1000 psi. The interesting point is that it was plumbed with copper lines and served him well for years.
I'm not so trustworthy of the fatigue factor in copper so I want to re-do everything in steel or use hoses (more spendy$) before I upgrade the pump.
One drawback could be capacity; Brake line is readily available in sizes up to 5/16" and probably larger while hose can be had just about any size.
Another drawback is a good set of flaring tools could run hundreds off the snap-on truck.

According to that FAA article, flared steel fittings are good up to 3000 psi.
Check NAPA or Schucks and tell us what you find.

Steve Howell
Seattle

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Hi,
	I found an interesting tidbit in an FAA guide on aircraft plumbing.  
It may not be usefull for most of the alloys we fiddle with, but it's 
something else to add to your bag of tricks.

Before I post this little table, I was wondering if anyone has experience 
doing 'hard' (i.e. steel tube) hydraulic lines. Where do you get your pipe/
fittings?
I am looking to replace some rubber/steelwire hoses with something more 
compact.



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