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  1. #1
    mtbr member
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    Join Date
    Aug 2006
    Posts
    209

    Hope M4 - Pull lever 2x to get full stopping power.

    Brand new Hope M4 disc brakes.

    The fronts work great, awesome stopping all around. The rears, I have to pull the lever twice to get full stopping power. And I have to do it in succession.

    Basically, pull once and I get a little bit of stopping power, not much. Then within a couple seconds, I have to pull again to get full stopping power. Then, all successive pulls get full stopping power if I pull again within a couple seconds.

    However, if I don't pull again for say 5 seconds or more, then I have to do a double pull again to get full stopping power back. These are supposed to be completely bled from the factory, but does this sound like air in the system? Does that jive with getting full power with succesive pulls after the first pull?

  2. #2
    mtbr member
    Reputation: 856er's Avatar
    Join Date
    Jul 2005
    Posts
    380
    Yep you've got air in the system,
    bleed it and you'll be sorted.

  3. #3
    Meh.
    Reputation: XSL_WiLL's Avatar
    Join Date
    Nov 2004
    Posts
    17,516
    Biggest tell-tale of air in the system is that the lever is squishy.

    To me it sounds like a master cylinder problem is not out of the question. I would try a bleed first, factory bleeds are not always perfect.

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