Braided Stainless brake lines 81 R100RT

Discussion in 'Airheads' started by k12lts, Jan 5, 2012.

  1. k12lts

    k12lts Been here awhile

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    I need to replace the rubber brake lines on a newly aquired 81 R100RT. Any suggestions on brand or best price?

    The best I've found are at Moto Bins in the UK.
    #1
  2. Beamer Bum

    Beamer Bum Been here awhile

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  3. Solo Lobo

    Solo Lobo airhead or nothing

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    Call cyclebbrakes.com they do custom Galfer's for something like $60, with a discount to ADVR's
    #3
  4. Hawk Medicine

    Hawk Medicine Coyote's Brother

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    I have used Spiegler's on a couple of my bikes and the difference in braking is significant but I'd also suggest that you rebuild or at least bleed your brakes for the best results.

    With an unknown, used bike, I like to rebuild em.
    #4
  5. Voltaire

    Voltaire Titanium and Ceramic Hipster

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    I've just spent the last couple of days on mine.....rebuilt the 40 mm ATE calipers, fitted a new Brembo 13mm master cylinder...but the old hoses for test purposes.
    Took me ages to get the air out....ended up with the calipers removed, sitting bleed nipples up on a box with a 25mm bar inserted in the calipers....
    Got a reasonable 'pedal' but could with some effort pull the lever to the grip.Used up over a litre of fluid...:eek1
    Today got some Allegri brand hoses that you buy in pre made lengths and bolt/loctite on the couplings.
    Braided hoses used to be illegal here in NZ but this type meet our local standards.
    Just finished my initial setting with the new hoses using the refined box/bar method....have already got a better 'pedal' on the lever, only 250 mils.....getting better at this...
    Going to leave the lever with a carb rubber ring on it overnight and go and have a beer....its 24C here :freaky
    I put a set on my Bevel a year or so back and it was definitely an improvement over the original 1978 ones...:lol3
    #5
  6. boxerboy81

    boxerboy81 Stay Horizontal

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    The common upgrade from the oem brake lines are ss lines. After 30 years, they'll feel fantastically improved over the discards. So will a set of oem rubber lines, and they'll feel just as good as new ss.

    With the multitude of ss options available, I'm guessing they'll be cheaper??

    Another option is Venhill, via ebay.

    Voltaire...try loosening the master cylinder and tilting it a bit to allow the air to bleed better. A mate does it that way and swears by it.
    #6
  7. wirewrkr

    wirewrkr the thread-killer

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    Incredibly short memories you guys have.
    BMWRENCH makes these line to order.
    www.thenickwackettgarage.com
    He's gives professional advice here constantly
    for free.
    #7
  8. boxerboy81

    boxerboy81 Stay Horizontal

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    From his website...

    #8
  9. supershaft

    supershaft because I can

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    New braided teflon is a lot better than new rubber and lasts a lot longer too. My braided teflon lines are over twenty years old and they are just as firm as the day I got them. I have recently seen a rash of trouble caused by rubber lines going bad. Why bother with it.
    #9
  10. motu

    motu Loose Pre Unit

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    I fitted new pads and changed my brake fluid a couple of days ago - as an experiment I clamped the hose at the top, and the lever was rock hard.... then I clamped at the bottom of the hose and it was rock hard. With no clamp there is some softness in the lever. No real test with new pads of course, but I'm pretty confident there is no flex in my old rubber hoses. I might have to get my wife to recheck for me as I'm a bit weak - I tend to cry at sad movies.
    #10
  11. Tosh Togo

    Tosh Togo Long timer

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    "Clamped"?... please explain what that means.
    #11
  12. motu

    motu Loose Pre Unit

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    Brake hose clamp - used when doing work on brake systems. I usually clamp the hose so when I push the pistons back fluid won't go back up into the master cyl. Also used in brake diagnosis (on cars) - clamp each wheel to see where problems are.
    #12
  13. k12lts

    k12lts Been here awhile

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    Thanks for all the tips, I sent an email to these guys today.
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  14. DaveBall

    DaveBall Long timer

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    I have also used Spiegler's SS lines on my 81 RT. Got the complete kit that included the one for the back brake as well. Made a huge improvement. I have installed Spiegler lines on many bikes and have always found the fitment to be just about perfect.

    Easiest way to bleed the back brake and actually make it work is to leave it on the bike. Get a couple of large syringes and use one to suck all the brake fluid out of the master cylinder, Then fill the other clean one with new brake fluid and use a small piece of clear tubing to attach it to the bleed nipple on the caliper, open up the nipple and slowly force brake fluid into the system. Eventually it will fill the master cylinder. Do this a couple of times and you should have a good solid brake pedal. I flush my brake fluid every 2 years this way. Always have a good working rear disk on my bikes.

    As to the person that clamps his brake hose so that he can press the caliper pistons in without brake fluid going up into the master cylinder. Just were the hell does it go then? Also, I don't believe that clamping a hose does it any good, tends to weaken the hose at that point and will become a failure point. On something so critical as the braking system, I would not want to do anything that may compromise it, especially in an emergency stop situation.
    #14
  15. photomd

    photomd Been here awhile

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    If you want to make your own, pull the hoses on the bike, measure the diameter and threads of the banjo bolts and fittings. Then carefully write down what fittings go where, the number you need and go to Advance Autozone and order Earl's brake line stuff. It'll take a few days to get in, assemble it and you'll be done.
    #15
  16. k12lts

    k12lts Been here awhile

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    I've also thought about taking old lines to a local hose shop and see if they can make them.
    #16
  17. supershaft

    supershaft because I can

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    Believe me, even new rubber lines give noticeably. There are reasons why most new bikes don't use them anymore.

    I don't think clamping rubber brake lines is a good idea. I wonder if that was the start of some of the trouble I have been seeing with them?
    #17
  18. Tosh Togo

    Tosh Togo Long timer

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    That's what I was thinking...smashing the line flat enough to stop fluid transfer might result in the inner liner detaching from the outer. I bet the fluid gets black in a hurry after doing that. :evil
    #18
  19. motu

    motu Loose Pre Unit

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    Do you have any proof of hose damage from clamping? In my job as a vehicle inspector I look closely at maybe 200 brake hoses a week - sure I fail quite a few, but seldom see that sort of damage. Of course that's what the safety inspection is for, to keep unsafe brake systems off our roads.

    Went for a ride this morning and my brakes have firmed up nicely. I like a bit of flex in my lever - it gives feel to the brakes, and that's why rubber hoses are fitted to motor vehicles, rock hard levers and pedals give little feel. In the days of rod operated rear brakes we used to bend the rod of an over sensitive brake to give it more feel.
    #19
  20. supershaft

    supershaft because I can

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    Expanding brake line equals less feel, not more. Other than that, you are talking about the amount of hydraulic leverage. That's adjusted through varying the hydraulic leverage, not ballooning brake lines. At least that is the smart way to deal with it while keeping better feel and control at the lever regardless. .
    #20