Quantcast

Hope Trials?

Discussion in 'Downhill & Freeride' started by J5ive, Sep 22, 2005.

  1. J5ive

    J5ive Guest

    Rep/Likes:
    0 / N/A
    Anyone tried these brakes for non-trials use? :dancing:
     

    Please register to disable this ad.

  2. lucky13

    lucky13 Chimp

    Rep/Likes:
    5 / 0
    Joined:
    Jun 3, 2005
    Messages:
    66
    Location:
    Seattle, WA
    You shouldn't since they have aluminum pots that will not do so well with heat acumulation. They are trials brakes for a reason.
     
  3. manhattanprjkt83

    manhattanprjkt83 Rusty Trombone

    Rep/Likes:
    17 / 261
    Joined:
    Jul 10, 2003
    Messages:
    8,793
    Location:
    Pittsburgh, PA
    didnt even know they made a trials brake :confused:, what is the advantage of an aluminum pot over other materials?
     
  4. Palilla

    Palilla Monkey

    Rep/Likes:
    1 / 0
    Joined:
    Jul 20, 2004
    Messages:
    102
    Yep, standard Mini lever with a different caliper (larger). 160mm rotor and steel braided brake lines. Supposidly a more "on/off"feel than the mini's.
     
  5. DHS

    DHS Friendly Neighborhood Pool Boy

    Rep/Likes:
    5 / 0
    Joined:
    Apr 23, 2002
    Messages:
    5,101
    Location:
    Sand, CA
    yea felt those before. they are actually lighter then the regular mini's yet have more power and are bigger. just for trials though. thats why they are called that....
     
  6. manhattanprjkt83

    manhattanprjkt83 Rusty Trombone

    Rep/Likes:
    17 / 261
    Joined:
    Jul 10, 2003
    Messages:
    8,793
    Location:
    Pittsburgh, PA
    but how do they accomplish the more "on off feel", different pads? I mean the larger roater would translate to this a bit, i dont understand the advantage of an aluminum pot though, would it just be the weight, and they can get away with that because they will not heat up? Im just curious...and why not run steel braded lines on all models, esp those for dh use?
     
  7. Palilla

    Palilla Monkey

    Rep/Likes:
    1 / 0
    Joined:
    Jul 20, 2004
    Messages:
    102
    This is just especulation, but modulation/lever feel/piston force on the pads all have to do with a few things:

    1. They probably tightened some tolerance in the mono design, the hydraulic piston ratios were probably changed to give better mechanical advantage.

    2. The aluminum pot would have a few advantages for trials use.
    Aluminum is generally stiffer than the stainless steel (I could be wrong but i think the pots are stainless steel on the other hopes). With a machined aluminum caliper and aluminum pot you would have a stiffer overall caliper. True the aluminum does not disipate heat as well as SS, but you don't have long braking efforts with high heat generation from a spinning rotor like you would have on a DH bike or a XC bike for that matter. Plus you get some weight savings with aluminum, especially with a larger size.

    3. Stainless steel brake lines will lessen the amount of expansion in the brake line when the fluid is pressurized compared to regular lines. In trials you are constantly holding the brake at full pressure. The fluid is being compressed and trying to release itself at the weakest point, usually the brake lines. You might not notice this during normal breaking but during intense braking, like in trials, a stiffer line will hold a more constant pressure because of less expansion of the line. SS lines are more expensive and not a necessity for XC or DH uses, but do make a nice upgrade for DH.

    So with different piston ratios, stiffer/larger caliper and stainless steel lines you are getting a brake that 'holds' much stronger, perfect for trials use, but not a good thing for xc/dh.
     
  8. Sir_Crackien

    Sir_Crackien Turbo Monkey

    Rep/Likes:
    6 / 0
    Joined:
    Feb 7, 2004
    Messages:
    2,052
    Location:
    alex. va. usa.
    the pot in the caliper is like 3-4 mm bigger than the regular mini. they are way more powerful and have to use a special by-directional rotor. i would attemded to use them on a none trial application in fear of breaking other parts in the bike(ie: the beark tabs in the frame)
     
  9. manhattanprjkt83

    manhattanprjkt83 Rusty Trombone

    Rep/Likes:
    17 / 261
    Joined:
    Jul 10, 2003
    Messages:
    8,793
    Location:
    Pittsburgh, PA
    :thumb:

    I started to read this and thought "damn this guy is good" then I realized who it is "DW junior"

    so are we gonna ride sat or what?
     
  10. Palilla

    Palilla Monkey

    Rep/Likes:
    1 / 0
    Joined:
    Jul 20, 2004
    Messages:
    102

    can't dude, the marathon owns me at this point :devil: ...after October 15th back on track... :thumb:
     
  11. manhattanprjkt83

    manhattanprjkt83 Rusty Trombone

    Rep/Likes:
    17 / 261
    Joined:
    Jul 10, 2003
    Messages:
    8,793
    Location:
    Pittsburgh, PA
    :rolleyes:
     
  12. lovebunny

    lovebunny can i lick your balls?

    Rep/Likes:
    7 / 31
    Joined:
    Dec 14, 2003
    Messages:
    7,237
    Location:
    San Diego, California, United States
    anyone got pics of these brakes?
     
  13. dropmachine

    dropmachine Turbo Monkey

    Rep/Likes:
    7 / 10
    Joined:
    Sep 7, 2001
    Messages:
    2,923
    Location:
    Your face.
    Blurry, but there it is.

     
  14. JK:UK

    JK:UK Chimp

    Rep/Likes:
    0 / 0
    Joined:
    Apr 17, 2004
    Messages:
    79
    Location:
    UK
    i have one.

    no modulation!
    it really is on or off. amazing for street / trials use, very sketchy for trail riding, i tried!

    mine are lined up with goodridge hoses though.