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Change 3 line to 2 line front brake lines

Discussion in 'Modifications and Projects' at netrider.net.au started by NSSherlock, Jan 5, 2013.

  1. Has anyone changed a 3 line dual disc front brake line set up to just 2 lines? Any issues with it regarding rego inspections?
    I'm in NSW so will need yearly checks done.

    Current is a 3 line set up using some sort of bar running across above the mud guard. Single line comes from the master with a double banjo on one side of that bar.

    Venhill suggest a 2 line set up with a double banjo at the Master Cylinder. It's considerably cheaper than their 3 line kit but that is not an issue.

    Recommended kit from Hel is 3 line.

    My concern with the 2 line is that even though all the lines are approved the basic configuration would have changed and this might be an issue.
  2. Nothing to worry about at all. Either way the lines are always full of fluid and work the same. I don't think there is any noticable difference in performance, but you get to choose a pretty colour for the end fittings. I'm happy with my 2 lines from the master (used to run over the guard too).

    The banjo at the master cylinder will of course be the longer one when you change over.
  3. Hel ones have better colours than Venhill.;)
    Reckon I'll go with a 3 line from Hel since I won't have to remove or seal up the "cylinder" across the front of the Triple Clamp (image below) and they'll be routed just a little better.
    Great now that they'll accept equivalent spec hoses because these will be cheaper to order from Wemoto in the UK than from the Oz Hel distributor.
  4. Beats me why all you guys waste money on pretty
    brake lines , surly someone is selling sleeves / covers
    so you van have your colours.

    all this braided / racing stuff is all
    bs and there is no performance gain.

    only advantage is ( rubbing) prevention
    but jees there are cars driving
    around with 20 year old rubber lines
    and they run much much much higher pressures than any and all m.c s
  5. Really? I think you don't know what you're talking about.
    • Like Like x 5
  6. Depends how you define performance. The standard rubber tubes can hold just as much pressure as steel covered rubber tubes.
  7. Well you've obviously never tried braided lines.
    • Like Like x 1
  8. Really, I didn't know that...How do rubber go in comparison to braided when it comes to expansion under pressure and heat?
    • Like Like x 1
  9. woops meant casso .
    lilly actually agreed with me - wow
    casso , i wouldnt have said that
    if i didnt know .
    sts rubber genuine is safer
    in my opionion than imported aftermarket
    the braid is for show , but who made
    the hose and has that manufacturer
    got the r and d behind them or are they
    made in china .
    braided lines when they first came our
    were illegal in australia for this reason.
    - stick with adr approved reputable brand is tthe smart choice.
    any qualified and expierenced brake
    specialist will back this up.[DOUBLEPOST=1357439582,1357437815][/DOUBLEPOST]
    Right back at you cazzo[DOUBLEPOST=1357439687][/DOUBLEPOST]just simply making sure people aren't wasting money thinking there is a performance gain , no problem with making your bike look better but its wrong to spend money thinking braking will change in any way at all with a braided line.
  10. Me thinketh you need a reality check.
    As for 20 year old rubber lines - mine are 19.
    As for claiming any performance advantage - I didn't and don't expect to notice any real difference.
    As for colours, they come in colours (including black) so wtf not.

    As for cost, the difference in cost for 3 over 2 is the additional connections and the extra labour making them up - the 2 line set up actually has longer lines than the 3. I could hunt around here and get a set of rubber lines made up which would involve considerable time given where I'm located and would possibly involve me supplying the specs. Or, I can order braided from Wemoto hassle free and with great service, delivered to the door and made to spec.

    This Isn't a "I want braided lines because they are cool". The rubber lines are well past their use by date.
  11. Absolute, complete bollocks.

    One of the most noticeable upgrades I ever made to my Hayabusa was when I switched over to Galfer braided lines. The braking was immediately, unarguably improved. The braided lines offered more feel and bite than did the stock rubber lines.

    The purpose of braided lines is to prevent brake fade due to rubber expansion from heat build up in the lines. Braided lines accomplish this perfectly, which is why they are used in racing applications.

    Now please stop talking, as you are only displaying your ignorance.
    • Like Like x 2
  12. thats cool mate, just making it clear as i said above, i have noticed many people
    doing the braided lines thinking they are getting more performance, i have never really bothered to correct anyone but thought i would throw the advice out there.
    ---marketing is a vicious thing .
    changing lines because there 19 years old , well i aint going to argue with that, road grime, oil and grease is not rubbers friend.
  13. Sorry, what I said was wrong - a bit. For the purpose of brake fluid, rubber will handle the pressure just fine. Braided lines will give a firmer feel depending on how old and crap the rubber is but for a relatively new bike with new rubber, braided lines are mostly for looks.
    So ultimately it comes down to personal preference on the feel of the brakes but the reality is the rubber will manage just fine for this application
  14. Guys braided lines make an enormous difference to the braking performance when heat starts coming into play (racing, track days, highly spirited riding). As Rainbow7 has mentioned, a noticable reduction in brake fade, and better feel at the lever..

    Going back to the OP, I replaced the front "over the guard" line with a "2 lines both direct to back of the master" setup.. works great!

    • Like Like x 1
  15. No sweat. I can see your point in some respects.
  16. Even if I wished you were wrong (which I don't) I'm not going to disagree with you when you are right.
  17. Please explain how heat has any effect on the brake line at all. The fact that the discs and lines are out in the open should counteract any possible - if it is possible - heat effect.
    • Like Like x 1
  18. Brake friction heats your brake fluid, which in turn softens the rubber lines, which then bulge outwards under braking pressure. The purpose of braid is to prevent the lines from being able to expand while they are soft, thus preventing brake fade.

    Really, I am very surprised that you, Lilley, don't know that.
    • Like Like x 2
  19. Under repeated heavy braking the fluid in the lines becomes quite hot, in turn the (rubber) lines soften and expand. You then start noticing loss of feel and braking force..
    • Like Like x 2
  20. Beat me to it Rainbow7 :)
    • Like Like x 1