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front fork air pressure?

Discussion in 'XJ Modifications' started by bikeman, Jan 20, 2014.

  1. bikeman

    bikeman New Member

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    What is the correct amount of air pressure in the forks of a 1982 seca xj750r
     
    bikeman, Jan 20, 2014
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  2. z32800

    z32800 Member

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    Std recomended pressure on my 750 (XJ900 frame) is 5.7psi max is 17.1psi, I run mine on about 9psi. Manual says NEVER EXCEED the MAX or oil seal damage may occure.
     
    z32800, Jan 20, 2014
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  3. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The correct amount will depend on your preference, and how much total weight (bike, rider, passenger, and gear) you have. The additional air pressure is acting as additional spring preload. As z32800 stated, never exceed max pressure. Personally I run without any additional air pressure unless I have a passenger.
     
    k-moe, Jan 20, 2014
    #3
  4. bikeman

    bikeman New Member

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    thanks guys thats great
     
    bikeman, Jan 20, 2014
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  5. TIMEtoRIDE

    TIMEtoRIDE Active Member

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    And the safest way to load the pressure is to fill a portable tank to the desired pressure, and then fill the bike.
     
    TIMEtoRIDE, Jan 20, 2014
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  6. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Almost. The safest way is to use a hand pump with a built in pressure gauge.
     
    k-moe, Jan 20, 2014
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  7. bendoza

    bendoza Member

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    ^ thats what i do. doest take more than a pump depending.
     
    bendoza, Jan 20, 2014
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  8. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    And you can carry it with you on a trip. I keep a collapsable bicycle pump in my tool tube.
     
    k-moe, Jan 21, 2014
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  9. happydog500

    happydog500 Member

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    I find my 750 runs good with a little more pressure. I'm getting pretty heavy so mine drives good at 12-15lbs. I tried 10lbs but kept bottoming out over jumps. :)

    Chris.
     
    happydog500, Feb 7, 2014
    #9

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