Pucker moment

Discussion in 'Airheads' started by rattis, Jan 20, 2013.

  1. rattis

    rattis Long timer

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    Hi i normally hanf out on the oil head site but I've got an old R 75/5 that I once upon a time converted to a single disc front brake an improvement fron the old drum.
    But by todays standard they suck big time, it's a stainless disc and its not very "grippy".
    there's definitely no need for ABS :eek1
    Goods ideas will be implemented.
    Pls PM me as per above.
    Thanks
    Andy
    #1
  2. JonnyCash

    JonnyCash turd polisher

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    Bar mounted MC and braided stainless hose made an enormous difference on my bike. When I did it I thought it would help, but it went so far beyond my expectations, I could scarcely exaggerate. I started a thread on it maybe 2 years ago. Check it out.
    #2
  3. bpeckm

    bpeckm Grin!

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    ^ the above seems to be consensus from what I read......


    I found that using grippy pads made a huge difference... look for HH from EBC, which I used and really liked....I had a single-disk front end with bar m/c and ss, but it improved mightily with the HH's....

    :D
    #3
  4. Houseoffubar

    Houseoffubar fine beer sampler

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    +++111
    Sintered, or HH pads by EBC, or other quality manufactures can make an enormous difference. I have for decades ridden race bikes with iron rotors, and can't tell the difference between them, and stainless, when using HH pads!
    #4
  5. mykill

    mykill odd

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    All of the above plus cast iron discs from Vintage Brake will get you all you're gonna get.
    #5
  6. Stan_R80/7

    Stan_R80/7 Beastly Gnarly

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    The only EBC pad I have found for my airhead ATE swing caliper was the EBC Organic Kevlar Brake Pads FA22. Using the EBC website, I cannot figure out the EBC HH part number - or if they even make a HH pad for the ATE caliper . Is there a part number for HH scintered pads with an ATE caliper - or is replacing the caliper needed?
    #6
  7. JonnyCash

    JonnyCash turd polisher

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    What does HH stand for?
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  8. hardwaregrrl

    hardwaregrrl ignore list

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    Green galfer if they make them. Good stuff:thumb
    #8
  9. mfp4073

    mfp4073 Long timer

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    Any links to where the suggested brake pads can be purchased?
    #9
  10. Stan_R80/7

    Stan_R80/7 Beastly Gnarly

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    I found the cyclebrakes.com website sells and has catalogs for the Galfer and EBC brakes. Per the cyclebrakes.com website, the EBC brake pads do not have a clear cross reference to Galfer and have no FA22 pad in HH material. The Galfer catalogs shows my '78 airhead w/ATE calipers and stainless disc uses the pad # D233-1. So, I emailed cyclebrakes.com to ask if they sell the D233-1 pads in green or HH pad material.

    I replaced my stock rotor with an EBC and the EBC kevlar pads. The braking was about the same as stock; no worries on locking the front tire! The ATE pivot caliper w/stainless rotor and kevlar pads are marginal. Short of swapping the forks for Brembo calipers, I am willing to try some green or HH Galfer pads and the EBC rotor. On I go with my personal 'Don Quixote' style adventure for decent ATE single caliper brakes.

    Edit: upon another examination of the Galfer catalog, the D233-1 part number is for a brake line, not pads. There are no airhead 74-80 brake pads made by Galfer listed in their catalog. It looks like different forks with Brembo calipers may be needed. Maybe cyclebrakes.com will have more information.
    #10
  11. mark1305

    mark1305 Old Enough To Know Better

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    I ran EBC HH Sintergrip on both my old Ducatis, for street and track (SS rotors). Great results wet or dry.
    But....
    Tried them on the R 80 ST when I went to a EBC Prolite front rotor with lackluster results. Switched pads immediately to Galfer Greens and basically got two finger braking with good modulation and no fade - same as on my F 650 which runs the Greens.

    Like lots of folks on here and other forums, cyclebrakes.com is my go-to brake supplier. Call on the phone and talk with the owner or her assistant rather than use the website. They both know a boatload of brake info.

    For the question about what the HH means - IIRC, pads are rated by initial bite then steady grip, or either grip then fade resistance. Been a long time since I looked it up. And if I recall correctly HH are the highest rating, but don't hold me to that. Also, note that as stated above HH sintered pads weren't the best in all applications.
    #11
  12. JonnyCash

    JonnyCash turd polisher

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    Thank you!
    #12
  13. GapRunr

    GapRunr Been here awhile

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    PM Sent. We stock the EBC Semi Sintered pad in a FA22.
    #13
  14. Houseoffubar

    Houseoffubar fine beer sampler

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    +1
    #14
  15. chasbmw

    chasbmw Long timer

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    On my dual disc 38mm R90/6, it was the smaller sized handlebar MC that really made the differeance, playing around with discs/pads may help but won't deal with the main issue: BMW got the ratios between the handlebar MC and the slave cylinders wrong. Going from a stock 17mm MC to a 13mm Mc gave me brakes that were almost as good as the brakes on my Brembo equipped 82, brakes with a greatly increased lever travel give both control and power.
    #15
  16. Solo Lobo

    Solo Lobo airhead or nothing

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    +1 the galfer Green's are my 1st choice as well
    #16
  17. GapRunr

    GapRunr Been here awhile

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    Where is everyone finding the Galfer green pads that fit the OP's R75/5? Galfer doesn't list a pad for that bike in any compound.
    #17
  18. supershaft

    supershaft because I can

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    Just to throw in a different angle: I have never noticed that much difference between sintered and organic pads or pads in general. I use organic pads because they are the easiest on my rotors. I have worn out a lot of rotors. I have literally worn out almost as many rotors as I have pads if you count pulsing rotors as worn out! Sintered pads seem to eat my rotors. If I include all the half worn pads I have replaced after replacing a pulsing rotor I have for sure worn out more rotors than pads!

    I do notice a big difference with different rotor alloys. IMO, rotor material is a big part of the equation. Personally, I run stock rotors but I also run Brembo calipers.

    Good braking with swinging calipers is an uphill battle. They are a bad design from the get go. An over inch tall pad that swings on a super short radius to meet a flat rotor? Good rotor/pad contact is impossible.

    IMO too much lever travel via larger caliper/MC ratio decreases braking control. Not enough 'feedback' IMO. I prefer a firm lever. Not too firm but firm.

    Personally, I wouldn't own and ride a bike regularly that has ATE swinging calipers but if I did I would start improving the setup with a handlebar mounted MC and steel braided lines. That stock MC setup is somehow the worst of two worlds combined.
    #18
  19. hardwaregrrl

    hardwaregrrl ignore list

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    OP said he converted to disk...but didn't say what caliper he's using. Assuming its ATE....
    #19
  20. supershaft

    supershaft because I can

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    I certainly did! :D
    #20