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Thread: Fork valves?

  1. #1
    Join Date
    10th October 2007 - 13:13
    Bike
    Honda CRF250X
    Location
    Hamilton
    Posts
    330

    Fork valves?

    Why do they say you have to put your bike on a stand before releasing the built up pressure in the forks?

  2. #2
    Join Date
    18th November 2007 - 16:51
    Bike
    2008 HUSQVARNA TXC450
    Location
    Dargaville
    Posts
    694
    to allow the forks to go to maximum length, otherwise you let the pressure out and it defeats the purpose of the shock in away,
    a lil test for ya to understand what i mean, loosen the bleed screwsand push your forks down and the air escapes then when you release the forks the air returns to the shock.
    HUSQVARNA TXC450
    SPECTRUM MC'S
    TAKAPUNA

    www.workshopmx.co.nz

  3. #3
    Join Date
    11th April 2005 - 20:27
    Bike
    KTM 200EXC RM250
    Location
    Waitakere
    Posts
    2,280
    So you don't create a vacuum which is what would happen if you opened the fork bleed valve with the fork compressed. This tends to allow the fork to ride too low in the stroke, cavitation to occur more readilly and create a harsh feeling.
    I'm not a fan of the push button bleed valves. They only need a small amount of dust inside them to create a leak and either suck air in or loose pressure, either of which is not helpful. Only takes 10 seconds to back a screw out and I like to bleed the forks the day before a ride. Many forks feel a little better with a small amount of positive pressure which occurs as the fork warms slightly and this helps the fork ride higher and also resists cavitation more so than a negative pressure.


    Twice the displacement, twice the cost and a decibel problem, I'll pass on the inside brraaaap!!!

  4. #4
    Join Date
    15th August 2004 - 17:52
    Bike
    KTM 2T & LC4
    Location
    Rather be riding
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    3,326
    It makes me cringe to see fellahs sitting on their bikes, pushing the bleed valves. Almost like they are showing off the 'bling', but all I am thinking is, "you've got more dollars than sense."
    Cheers,
    Colin

    Quote Originally Posted by Steve McQueen
    All racers I know aren't in it for the money. They race because it's something inside of them... They're not courting death. They're courting being alive.

  5. #5
    Join Date
    10th October 2007 - 13:13
    Bike
    Honda CRF250X
    Location
    Hamilton
    Posts
    330
    Thanks some very handy info there,

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