Braided Line/Fitting Installation ?

[914forme]

Don't forget to flush them out good, SS bit or rubber bit can clog a small passage or worse, land in a bearing and well as Haywood would say, you've got toast!

BTW, they do make a set of loop cutters to do this also. Look like big pruning shears. Work great, but I use tape and an cut off saw.

[raygreenwood]

The only place you do not want to use the Teflon line...is in areas where it could get kinked by accident or in long unsupported runs with tight loops at one end or the other....for pretty much the same reason. Teflon is not known for its impact resistance. It cracks from a kink just like teflon brakelines. It mus tbe supported or tied down on long straight runs so that long length cannotstart whipping around.....cracking it.

But....unlike rubber covered with stainless....it does not have the same chafing issues as lines that flex or vibrate and wear at their hold down points. Great stuff. Just be careful with its use. Ray

[Hotrodvw]

If anything, the SS/Teflon hose is tougher I think. The wire in the braid is a thicker gauge. People forget all too quickly, it's SS covered tubing......there's no hose involved. You should support and fasten any hose, not just this stuff.

[NEBUGGERNATOR]

Tape and cutoff wheel. My bud swears by dipping the end in boiling hot water before putting the end on the hose. I have never tried it personally. My other bud says he uses gasoline for a prelube. I've always just used alot of cussing/swearing.

[raygreenwood]

They actually make special pliers that hold the tubing in one die and the barbed fitting in the other...and when you squeeze...it install the fitting. Light heat is used as well.....this is common in semiconductor lab and clean room work for chemical piping. Ray

[david58]

http://www.summitracing.com/parts/AER-FBM3632/

Anyone use one of these?

[david58]

I found a great little How to on braided hoses.

Hi all,
Have done a few fittings now and here are a couple of hints that may help you along the way.

Tools required:
Angle grinder + thin cut off wheel approx 1mm thick
Electrical tape or masking tape
Socket (size depends on size of hose)
Spanner (size depends on size of fitting)
Vice Soft jaw preferred, if not cover the vice with soft cloth/rag

attaching the hose ends:
If the end you are working with is frayed it can be hard to start the nut so i always start from a fresh cut end.
frayed end




Wrap electrical tape around area to be cut and hold the hose in the vice.




Using the angle grinder cut through the hose in the taped area, don't go too fast or it will fray the bottom half of the braid and too slow will melt a heap of rubber internal, i have found pulling on the end while cutting gives the best result. after cutting make sure to clean the internal hose of melted rubber and braid (i used an acute angled plastic strip to remove most of the melted rubbed and blew the hose out with compressed air (from the other end)




Remove the electrical tape off the braid, unscrew the back end of the fitting and push the unscrewed part (the nut) onto the braid (inside this nut there is a threaded end and a barbed end push the braid through the barbed end not the threaded end).
Do this slowly or you will catch some braid and fray the end, i find it best to start on a 45 deg angle and press the cut braid in with your fingernail if required, Warning the fresh cut braid is sharp and will easily cut into you, i know from experiance <!-- s:) --><!-- s:) -->




Dont try to push it on too far at this stage, it will probably try to spring back

Using the correct size socket place it over the end of the nut now sitting on the end of the hose, i found this gives you better leverage to rotate the fitting whilst pushing on the hose.



Rotate the socket both ways until the braid starts to go into the nut, after a while i have found it will only want to turn one way. Contine to push on the hose and rotate the socket until the braid reaches the threaded section in the nut (Earl fitting require you to back it off 1/8" from this thread while speedflow does not, so check with your supplier).




Tape the exposed end of the braid with electrical tape, this is a quality indicator when you are finished to ensure the hose hasn't pushed out of the nut.




Both earls and speedflow recommend lubricating the end of the male hose end at this point (speedflow recommend SAE 30 Oil), i used a very small amount of synthetic 15w oil, diped my finger and lubricated the male end that goes inside the hose).

Take the other part of the hose end and hand start the male thread into the nut and then place the nut in the vice.
Using the spanner tighten the male thread hose end onto the nut, i like to keep upwards pressure on the hose at this point to be sure that it does not come out.
Speedflow recomend there should be less then a finger nail between the nut and the male fitting.




Check the tape to ensure the hose hasn't pushed out and your done <!-- s:) --><!-- s:) -->.




I usually do one end then feed the hose to the next fitting, mark with electrical tape for cutting raise and repeat

Hope you learn from my mistakes

Bryan

http://datnet.org/Technical-f35/Tech-Ar ... t1310.html