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  1. #1
    mtbr member
    Join Date
    Dec 2006

    headshok owners with hydro disc brakes

    I am in the process of converting my F400 to disc brakes and I wanted to ask a question.

    I have heard that turning a bike upside down can be bad for hydro disc brakes as far as putting tiny amounts of air in the system that are lurking in the reservoir etc.

    My concern is that checking my headshok will require a wheel removal and usually turning the bike upside down to check the shock pressure.

    Can any owners give me their thoughts and experiences with this incuding the disc system that they are running.

    My current favourite choices are Magura Louise BAT for hydro, (I am an expat in Germany and these brakes are some of the cheapest and easiest to get parts and shop service), or Avid BB cable if the hydro problem is real. (Real easy to service anywhere and relatively super cheap, but lacking in feel compared to hydro's).

    Many thanks for any comments.

  2. #2
    mtbr member
    Join Date
    May 2006
    My take is turning the bike upside down will have no effect on your brakes. The hydro brakes are a positive presure closed system. The only way air gets in is if you have a leak in a line or reservoir, even then you will know you have a leak. The biggest risk of getting air into the system is when you are bleeding them.

    Curious as to what others have to say.

  3. #3
    mtbr member
    Join Date
    Jun 2004
    totally agree. If the lines are not bleeded properly, turning upside down would make the problem worse. But a properly bleeded system should not be afected by turning the bike upside down...

  4. #4
    Reputation: Dan Gerous's Avatar
    Join Date
    Feb 2004
    My opinion also.


  5. #5
    Cannondale Snob
    Reputation: RiskEverything's Avatar
    Join Date
    Mar 2006
    I turn my bike upside down all the time, and my brakes still work just fine.

    Enough to throw me over the bars if I'm not careful...
    '06 Cannondale Rush 1000 4" travel 27lbs
    '04 Cannondale F600 SOBE -STOLEN!
    '96 Cannondale Uber-V 6" travel 30lbs

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