>That's funny, aircraft use SS lines because of their reliability in
>hydraulic systems that operate at 3000 psi normally and peak alot higher
>than that. These systems usually articulate alot farther than the typical
>truck application, often 90+ degrees per application, not to mention the
>vibration and chaffing. They are also routinely subjected to temperature
>extremes from -40 deg. F to +300 deg. F in a single flight. Performance
>motorcyclists have put aftermarket SS lines on bikes for years because the
>expansion of rubber lines under pressure causes a decrease in braking
>performance. Food for thought.
>
>Mike G.
>
Mike,
I think you're missing the point. I wont argue that SS covered brake
hoses allow better braking then rubber. Granted, rubber expands, teflon
does not. I wont argue that SS lines resist abrasion better than the rubber
lines. The problem with the SS lines is in fourwheeling/offroad
applications (for the most part). Once dirt gets in the braid, its stuck
between the SS and the teflon hose that the braid is protecting where it
rubs it down till it breaks.
I'm not sure what articulation and airplanes and temperature
differences has to do with it. 300F is over the boiling point of DOT3 brake
fluid. Vibration wise, I'm not sure what to say, my engine mounts are
rubber?
Sometimes, I think airplanes are great examples of "the right way to do
things" but I dont think this is the case. Airplanes have alot more to deal
with (temp and vibrations and such) that probably make SS lines a more
viable solution for them, but not for us "earthbound" folks. Also, think
about the safey inspections and maintanence schedules of airplanes compared
to your truck.
-- Dave______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com
This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:47:44 EST