Making brake lines

Wicked Stick · Post by **Wicked Stick** » Fri Dec 11, 2009 1:59 pm

I've recently made up my own Stainless Steel braided Oil Cooler hoses using AN quality fittings and hose from Pegasus Racing.

They also sell end cap fittings for pressure testing them.

I bought the -8 set and tested them in my kitchen sink underwater just last night. Worked out great except the end cap from the test kit had a defect on the sealing surface so I'm waiting for a new end cap to be shipped to me and I'll retest them.

I put about 90 psi in them for now and I can see no leaks (air bubbles) other than the end cap so far.

Which begs the question... How high of a pressure do you really need to test for.. I can't see testing to 500 psi if the hose in service will not see over 120.

captain_john · Post by **captain_john** » Fri Dec 11, 2009 2:22 pm

I seem to recall somewhere being instructed to test for twice the operating pressure.

Which then creates the second question; what IS the operating pressure!?!

If I were a betting man, I would say the brakes on an RV would rarely exceed 500 psi.

I could be wrong...

I dunno?

CJ

Midnight Sun · Post by **Midnight Sun** » Fri Dec 11, 2009 3:06 pm

captain_john wrote:
If I were a betting man, I would say the brakes on an RV would rarely exceed 500 psi.

My guess is that would depend on how fast the trees are coming at you.

captain_john · Post by **captain_john** » Fri Dec 11, 2009 4:24 pm

Hahahaha

or the water (as in an email attachment that I just recently sent many people on this board)!

CJ