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Pinned Trail - Fitting USD Forks?

Discussion in 'Tech Tips' started by maelstrom, Dec 2, 2014.

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  1. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Would like to help you out, but don't have any of those forks to measure.
     
    Murdo, Aug 7, 2015
    #21
  2. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Thanks Murdo. It is all quiet on the Western Front.
     
    maelstrom, Aug 19, 2015
    #22
  3. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    What pics and measurements do you need exactly? Mine aren't i. The best condition but I may be able to help
     
    Th3_Huntsman, Aug 19, 2015
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  4. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Thanks for the offer.
    Any of the dimensions that you see on the web page and pics of those dimensions being taken would be a bonus.
    I'll add the ZXR250A in eager anticipation :)
     
    Last edited: Aug 19, 2015
    maelstrom, Aug 19, 2015
    #24
  5. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    Don't rush, just looked at the diagram and I will need a very quiet day to get it done but will when I can
     
    Th3_Huntsman, Aug 19, 2015
    #25
  6. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    It's ok, any information is good.
     
    maelstrom, Aug 19, 2015
    #26
  7. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Some members on the Honda CB-1 forum sent dimensions and pics so my faith in humanity has been restored.
    I added the FZR250 3LN, which consists of nothing but the disc diameter at the moment, and the Honda MC22 which has nothing at all.
     
    maelstrom, Sep 4, 2015
    #27
  8. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Members on the CB-1 forum contributed most of the info for that model with some pics too. hint, hint
    Oops that is old news. Oh well :)
     
    maelstrom, Sep 23, 2015
    #28
  9. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Well it is November, time for a bump.
    I have the length of the 1998-2001 Yamaha R1 forks thanks to a UK forum. Another great leap forward for mankind. All 250 four owners you can give me the dimensions of those forks too so that if anyone wants to go to USD they have the information they need.
    http://www.litetek.co/Guide_USD_ForkDatabase.html
    cheers
    Blair
     
    maelstrom, Nov 10, 2015
    #29
  10. Tim_

    Tim_ resident nutcase Contributing Member Dirty Wheel Club

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    Sorry mate I would give you all the dimensions I used to complete my little project but I am currently a very long ways away from my bike... I do remember being on the steel lathe making col-lets for the stem to fit the frame of the 250.... I also spent a lot of time measuring and re-measuring to get it close to the original... what I was not prepared for was the non-compressed height of the ZXR-A forks I used... While I was measuring on flat ground and using stands, once I had the bike out and parked it on a slight incline it look like it was rearing up on the back wheel so i had to get it back in the garage and play with suspension... It was a long process and a lot of time spent out asking for peoples wisdom on bike suspension... But looking back on it I do wish I had more time to iron out the small problems I was having...

    IMG_2764.JPG
     
    • Like Like x 1
    Tim_, Nov 11, 2015
    #30
  11. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    I added part three to the first post. Part four will be fitting the triple clamps and the process of designing and fitting a custom stem.
    cheers
    Blair
     
    maelstrom, Dec 30, 2015
    #31
  12. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    maelstrom, Jun 26, 2016
    #32
  13. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Nice there's some good information in this thread!

    Not sure if this post help's here but i found a few dimension list's a while ago, feel free to delete my post if it doesn't fit in
    Motorcycle Fork length's
    http://www.customfighters.com/forums/showthread.php?t=53934
    Steering stem bearing size's, to show what may be compatible
    http://www.ohiocaferacers.com/
    http://www.caferacer.net/forum/project-builds/14059-triple-tree-fork-conversion-chart.html
    And a list of fork tube size's
    http://www.ohiocaferacers.com/

    There was a list of Tripple Clamp dimension's somewhere too but i can't find it atm
     
    my67xr, Jun 26, 2016
    #33
  14. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    maelstrom, Dec 1, 2016
    #34
  15. Damus

    Damus She is a BEAST and riding it is comparable to sex Dirty Wheel Club

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    FYI travel or stroke of forks on mc22 is 90mm mfr is nissin
     
    Damus, Dec 1, 2016
    #35
  16. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Thanks. Nissin? I think they only make brakes.
     
    maelstrom, Dec 1, 2016
    #36
  17. Damus

    Damus She is a BEAST and riding it is comparable to sex Dirty Wheel Club

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    That's what I meant, in the database the caliper mfr is missing, sorry bad punctuation.
     
    Damus, Dec 1, 2016
    #37
  18. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Yes, but I have not done anything to it other than make it shiney. Seeing as how you asked so nicely I will get onto the specs today. :D
     
    • Like Like x 1
    Murdo, Dec 2, 2016
    #38
  19. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    maelstrom, Dec 2, 2016
    #39
  20. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Edited the first post to include a section on making a custom stem to fit your new triple clamps.
     
    maelstrom, Feb 24, 2018
    #40
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