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DT125R FORUM

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  4. Fork too soft

Fork too soft

Scheduled Pinned Locked Moved Suspension
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  • Hark_PtooieH Offline
    Hark_PtooieH Offline
    Hark_Ptooie
    wrote on last edited by
    #1

    I know little about suspension.

    How do I make my front a bit stiffer? I am like 100 kg fully clad and the suspension is a bit too much enduro, too little motocross for my taste.

    Is it like I heard about some other bike that there is only one spring in one leg, so you stuff a second in the other for twice the stiffness?

    HOTSHOT IIIH 1 Reply Last reply
    0
    • Hark_PtooieH Hark_Ptooie

      I know little about suspension.

      How do I make my front a bit stiffer? I am like 100 kg fully clad and the suspension is a bit too much enduro, too little motocross for my taste.

      Is it like I heard about some other bike that there is only one spring in one leg, so you stuff a second in the other for twice the stiffness?

      HOTSHOT IIIH Offline
      HOTSHOT IIIH Offline
      HOTSHOT III
      wrote on last edited by
      #2

      @Hark_Ptooie Both fork legs should have a spring and a spacer.

      You can make major improvements to the DTR suspension by running XT600 3AJ fork springs (same size but 20% stiffer) and 500ml per leg 15W oil (stock is 500ml 10W), this made my '98 DTRe jump and resist bottoming a lot better than the 2020 KTM 250EXC I also owned at the time. I was also running a YSS shock and to get it to match the upgraded forks I had to increase the preload by 16mm and run the rebound on position 29 out of 30. I weigh 150lbs and this setup gave 25% static sag at both ends, normally a good starting point for setting up suspension.

      There are also aftermarket DTR fork springs available which some of the guys on here have had good results with @SpookDog

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      • Hark_PtooieH Offline
        Hark_PtooieH Offline
        Hark_Ptooie
        wrote on last edited by
        #3

        Okies, very good - thanks a lot!

        3AJ = 88-90 Ténéré? Could it be that they had the same Showa 41 mm as the rest of the 84-89 XT600's? Because it may be easier to find.

        I actually had a 1990 XT600E. It was a pig. Not recommended.

        HOTSHOT IIIH 1 Reply Last reply
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        • Hark_PtooieH Hark_Ptooie

          Okies, very good - thanks a lot!

          3AJ = 88-90 Ténéré? Could it be that they had the same Showa 41 mm as the rest of the 84-89 XT600's? Because it may be easier to find.

          I actually had a 1990 XT600E. It was a pig. Not recommended.

          HOTSHOT IIIH Offline
          HOTSHOT IIIH Offline
          HOTSHOT III
          wrote on last edited by HOTSHOT III
          #4

          @Hark_Ptooie Yes all the XT600 forks look pretty similar (except the XT600E has a twin piston front caliper), I wouldn't think the fork springs differ that much between models and I have heard of people running XT600E fork springs in the DTR. The 3AJ is the Ténéré yes, I recommended them because I found someone selling a set on eBay for £20 (he'd fitted aftermarket springs as Yamaha managed to make the forks too soft an that bike as well).

          I never liked the XT600E to be honest, I owned a Honda NX650 Dominator at one time and that was something of a disappointment as well, I think a well sorted DTR or KMX125/TS125R would give all those big singles a run for their money on tarmac as well as being a lot more fun off-road.

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          • Hark_PtooieH Offline
            Hark_PtooieH Offline
            Hark_Ptooie
            wrote on last edited by
            #5

            Great, thanks!

            The Dominator looked terriffic though.

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