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Thread: That $#*&#ing Rear Brake

  1. #1
    GP Champ shovelheadwolf's Avatar
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    That $#*&#ing Rear Brake

    I've had the damn thing bled, re-bled, and powerbled. And the damn thing always seems to fade. Now I may not be the most mechanically inclined here, but isnae a closed system (especially hydraulic) supposed to continue working? Why the fuck does my rear brake work great for a bit, then slowly fade, requiring mucho pumping of the pedal to get a feel again.

    Is there a mod (and NO, I don't want to hear about the brick or paint bucket hung from the pedal!!!! I WANT A FIX!!!) that can be accomplished by a neophyte and dilettante such as myself in mine own little shed? I'm even thinking of getting another rear brake master. Would that make any difference?

    Waiting to hear from the more tool ept folk.

  2. #2
    One Litre Duc Eater ChrisBuk's Avatar
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    just dont use it ...take it off completly ! its shite !

  3. #3
    GP Champ shovelheadwolf's Avatar
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    C'mon, I was actually trying to start a helpful and serious thread. And I already don't use it... I want the option of having one and ignoring it.

  4. #4
    Nob
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    Theirs loads of theories Shovy, what I did and it actualy works ok is to extend the lever so its nearer. Ie more under the foot instead of the toes, if you know what I mean.

  5. #5
    Baby Twin
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    You can gnash your teeth and shout and stress about faults like this which 99% of bikes have in one form or another but in the end you iether find a way of living with it or get rid and find another devil you don't know.
    I have two faults with my '07 R : 1) the back brake as above and 2) my clutch lever keeps going floppy as I have reported elsewhere on here.
    The first will probably never be resolved without some expensive mod so all I do as part of my parking-up procedure is to wrap a bunjee around the lever so it is 'hard on' while static.
    The second is probably a similar thing ie air/bubbles in the system caused by maybe a knackered seal or hairline crack? I have also included in my p-u-p the application of mole grips to the clutch lever to keep it hard on which seems to work temporarily, until next service anyway.

    For me bikes like these and tbh every other I've had, need to regarded as highly tuned, quirky, delicate, self-indulgent toys. If I wanted a sensible form of 2 wheel transport it would be a big scooter.

  6. #6
    GP Champ shovelheadwolf's Avatar
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    Nay problems ever wi' the clutch. It's just a little frustrating to be sitting at a light and apply the back brake to hold pos, and nothing happens. I know she's a tad quirky, but there HAS to be a fix! A permanent one!

  7. #7
    GP Champ Batfastard's Avatar
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    RSV4 footpeg set up is being talked about on AF1 a lot.

    I relocated mine on rearsets, not only sorted the brake, but the gear change is smoother - now explain THAT one.

  8. #8
    GP Champ shovelheadwolf's Avatar
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    Hmmm, pics and explanation would help. I changed to aprilia genuine racing rearsets and I DO love the way they shift. Wondering how to relocate the cylinder then. One of my RSVR mates was yipping about boring bigger holes in the cylinder. I'll have to research AF1 a little then see what info I can bring over here.

  9. #9
    GP Champ Batfastard's Avatar
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    I'll recreate the "how to" post about installing the rearsets

  10. #10
    GP Champ
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    ffs

    Thank god it's not just mine that has zero rear stoppage

    First time I tried to hold the bike on a hill I thought I'd actually broken the foot lever off ... I pushed and it went all the way to the deck with no effect whatsoever.

    I agree with the "surely it's a closed hydraulic system" point as well ... wtf does all the air come from?

    Ignoring the back brake doesn't really answer the concern so if ever anybody can come up with a simple cheap fix it will be the post of the century.

  11. #11
    GP Champ shovelheadwolf's Avatar
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    Got that right, new. And if we can invent a widget that keeps the rear brake working we're going to make ourselves rich.

  12. #12
    Baby Twin
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    just man up and live with it.

  13. #13
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    I`ve never had a problem with the rear brake, not really. If it`s meant to stop me then it will but not as quick as the front. If you want it as good as the front then it will lock up the back wheel and could throw you off.
    My " T " is ace.

  14. #14
    WSB Pit boss Aldo's Avatar
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    I read an article on af1 site aboot the problem it was suggested that air in the system may be caused by cavitation in the brake fluid. The fitting of rear sets could eradicate the problem due to the relocation of the m/c ie the vibration was lessened thus reducing the cavitation. There was a lot more to the post than above.

  15. #15
    Superbike Twin bloodnut's Avatar
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    i've been lucky as my back brake has always worked, well it's ok for stopping at the lights

  16. #16
    GP Champ shovelheadwolf's Avatar
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    Mine gets to the point that it won't even keep me from rolling backward at a light....

  17. #17
    Baby Twin piker's Avatar
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    i jus don't understand the rear brake problem u all seem to b having. my 15000 mile 03 streetfighter will lock the back wheel at any speed..in fact i overheated and discoloured the disk when practicing locking the back wheel going into corners!
    it's not as sharp atm but that's cos the pads nearly done.
    i use back brake a lot to even up my braking..i wud crack up if it was as shite as u all seem to b experiencing.
    any idea if tuoldo's like mine have generally good back brake?

  18. #18
    Superbike Twin bloodnut's Avatar
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    every italian bike i've owned has had a useless back brake for one reason or another and every japper i've owned has had a useable backbrake, not that i'm thinking of going japper but i would like a back brake that i can use more than at traffic lights

  19. #19
    AMA Pit Boss rico's Avatar
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    Thirs nuthin like the comfortin feelin o a wee accompanyin dab o back brake alang wi the front oan they greasey roondaboots etc.

  20. #20
    AMA Pit Boss rico's Avatar
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    Wel mibbe a BJ beats it but ye ken whit ah mean

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