GG6521 Ohlins (GasGas 2006) Rebuilt & Modified

Discussion in 'Trials' started by motobene, Nov 29, 2018.

  1. motobene

    motobene Motoing for 46 years

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    Mar 9, 2013
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    5,324
    Location:
    Wichita Mountains SW Oklahoma
    Customer sent a ragged out Ohlins off a much used 2006 GasGas.

    The shock itself wasn't so bad. Whoever worked on it last was somewhat the hack and it lost its gas. It was also run rod side up and the seal head area was pretty packed with dirt.

    The fix was some machining, cleaning, and fresh oil. The seal head was still good.

    I pressed in a custom Schrader valve because the hat had been welded on one side and screwed up on the other, so I just plugged it there.

    Ended up revalving and modifying for longer travel while in there. Why not? It's SO easy to do so, and it gets rid of the short-harsh feeling typical to these shocks.

    The former 12-year-old junk should now out perform the latest shocks. We shall see, as I got creative on the revalve.

    Interesting to find the shim specs the same as the later GG4512. Also, I found a very wide range of bypass adjustment. Very fast on the return at zero clicks. Glue slow at 34 clicks. Nice!

    Ohlins is #1 in ease of maintenance and modification! Glad I have Ohlins and not Reigers on my Shercos.

    IMG_20181129_093305.jpg

    IMG_20181127_164540.jpg

    IMG_20181127_132350.jpg

    FYI I have an error in the photo above, which shows stock valving. There are actually two small rocker shims in the compression and rebound stacks. They were just stuck together so they looked like one in each place.
    #1
  2. 2whlrcr

    2whlrcr gooligan

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    This is usually where I started to fall asleep in class.:-)
    #2
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  3. NMTrailboss

    NMTrailboss Team Dead End

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    :lol3
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  4. Brewtus

    Brewtus Buffoonery, Inc.

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    Better pay attention, there will be a test later!! :dirtdog
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  5. 2whlrcr

    2whlrcr gooligan

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    Multiple choice, not problem. Show my work...I'm screwed.
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  6. motobene

    motobene Motoing for 46 years

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    Well there's usually that guy in the front of the class who never goes to sleep! :-)
    #6
  7. PMK

    PMK Been here awhile

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    SoFlo, USA
    The .17, .18, and .28 thickness shims, interesting
    #7
  8. motobene

    motobene Motoing for 46 years

    Joined:
    Mar 9, 2013
    Oddometer:
    5,324
    Location:
    Wichita Mountains SW Oklahoma
    Ah yes, good catch. On an unfamiliar shock I measure actual shim thickness to see how the stock is varying from nominal. So yes, they are considered 0.15, 0.20, 0.30mm etc.
    #8