braided brake lines

[abently]

so.. you changed an internal rubbe rline with an internal teflon line and the owner was stoked with the pedal feel

if you want a firmer pedal, got lines with stronger internals... is about as simple as that

I'm more interested in a consistent pedal feel over an extended period being brake happy.

Without buying a single line from the dealer and cutting it apart, do you know what materials are used in say a low-spec 03 Corolla ?

And can a heat-soaked rubber line seriously expand somewhere along the lines of 5-10% ? Or should I put one in the oven and find out ?

[oldcorollas]

well.. none of that has anything to do with being braided or not

if you want good high temp performance, and are not worried about a possible shorter life due to a stiffer line.. go with teflon inner lines.....

you can put a line in the oven, but i don't think you will be able to measure the difference..
maybe i could tho... but why would i need to?

have you measured the temperature of the fluid in the flexible lines, or the outside of the flexible lines?? care to guess on the rate of heat transfer through the fluid from the stationary fluid in the caliper, back to the fluid within the lines?

oh.. and go to a wrecker with a pair of sidecutters
if the inside is white, it's teflon or similar. if it is black, it is rubber based.. it is unlikely to be anything else.

braided is still just a wank. (except for the possibility it is needed to protect the less flexible teflon )

[MR22ZZ]

I'm more interested in a consistent pedal feel over an extended period being brake happy.

Without buying a single line from the dealer and cutting it apart, do you know what materials are used in say a low-spec 03 Corolla ?

And can a heat-soaked rubber line seriously expand somewhere along the lines of 5-10% ? Or should I put one in the oven and find out ?

Nothing much wrong with the standard brake lines in the '03 corollas.
Mine used to hold up well on the track with no fade at all.

[The Real Roadrunner]

braided is still just a wank. (except for the possibility it is needed to protect the less flexible teflon )

needed_to_protect_the_teflon,
i_get_it_with_a_claer_cover_so_it_wont_eat_anythin g_it_rubs_against,
it_also_needs_rubber_ends_to_stop_it_kinking


mosbustedmyspacebar

chees
linden

[MR22ZZ]

The rubber ends are actually to prevent whiplash failure (or is to to prevent the frayed ends following whiplash failure?).
The interesting point here is that ADR are the only regulations in the world that require it on both ends of the line, which is why the majority of imported lines are NOT ADR compliant for on road use... still fine for track cars though.

[merc-blue]

Also what brake fluid are you using? how regularly are you bleedding it?

What im reading is "i want to find a excuse for braided lines, besides just wank"
If you dont KNOW you need them than you probly dont

[The Real Roadrunner]

The rubber ends are actually to prevent whiplash failure (or is to to prevent the frayed ends following whiplash failure?).

not sure on what exactly they class as whiplash failure but i know from working with the stuff that the teflon (and braid) are most likely to kink right where the fitting goes on the end, thus the rubber pieces stop this happening every time you go from lock to lock which is when they are most likely to get pulled tight (not that they ever should be)

cheers
linden

[MR22ZZ]

ADR specification simply states that they must pass a 'whiplash test' through both fastener points. I'm not sure what the test though.

[Cuzzo]

I was under the impression that braided line stop line expansion creating harder feel for longer and giving maximum pressure to the calipers/pads.

Other than that just a wank. Not for an everyday driver unless it sees the track.

[oldcorollas]

I was under the impression that braided line stop line expansion creating harder feel for longer and giving maximum pressure to the calipers/pads.

thats what the people selling them wan tyou to think but it is not true.

think of those "chinese finger torture" things
http://en.wikipedia.org/wiki/Chinese_finger_trap


think of it this way.
if the braid was tight enough to stop expansion.. or lengthening... then they would not be flexible would they

Today’s modern vehicles are more powerful and are capable of greater speeds than ever before, constant heavy braking puts huge strains on the brake system. A brake hose failure under these conditions can spell disaster.
The PTFE Teflon® inner tube of the BrakeQuip Braided Hose is compatible with all brake and clutch fluids. Teflon® is a registered trademark of DuPont.
The braid is corrosion and flame resistant stainless steel. It also offers protection against abrasion.
Braided Hoses will not expand under high pressure (volumetric expansion) and temperature, this allows a consistent line pressure giving a firmer and more efficient brake system operation, eliminating that ‘spongy’ pedal feel.

notice the capitals for the "Product Name" as opposed to the kind of thing it is.. ie, braided hoses... technically they are correct, but the way they present the information is misleading.
they don't say the braid adds to strength. they only say it stops abrasion.
but most people don't even think about that kind of thing, and read it like "the braid on the hose gives it the extra strength"

then again, they also say this

The best method to test hoses is to have:
The engine running for maximum boost.
Have somebody pumping the brake pedal while somebody is inspecting the brake hoses.
A torch to ensure plenty of light.

wtf? how does having an engine on boost help you to check if your brake lines are fecked? surely maximum vacuum would be better, or a bigger right leg?

[Cuzzo]

So are we talking about all types of braided brake lines? Like ADR approved braided lines i get from B and R brakes for instance?

[MR22ZZ]

The quotes Stu has highlited have come direct from here...
http://www.braidedhoses.com.au/

so yes, ADR compliant ones from B and R (and others)

[Cuzzo]

Well thats super gay....

I guess i should research these things before i outlay my monies.

So what would a better alternative to 30 year old brake lines in my rolla?

New rubber lines?

[abently]

Well thats super gay....

I guess i should research these things before i outlay my monies.

So what would a better alternative to 30 year old brake lines in my rolla?

New rubber lines?

The Braided brake lines most places offer run the ptfe teflon inner tubing, so it is still better then new rubber lines.

[abently]

Nothing much wrong with the standard brake lines in the '03 corollas.
Mine used to hold up well on the track with no fade at all.

Yes, but was yours the 100Kw model or the 140Kw model which has bigger brakes and possibly different brake lines from the standard range ?