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DT125R FORUM

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1988 bike

Scheduled Pinned Locked Moved DTR
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  • O oldman

    Also toying with idea of fitting progressive fork springs, anyone tried them with a dt? Did fit a set years ago to a 600 and made a big improvement to that, but chalk and cheese really?

    declanD Offline
    declanD Offline
    declan
    wrote on last edited by
    #69

    @oldman beautiful

    1 Reply Last reply
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    • O oldman

      Also toying with idea of fitting progressive fork springs, anyone tried them with a dt? Did fit a set years ago to a 600 and made a big improvement to that, but chalk and cheese really?

      NINJAN Offline
      NINJAN Offline
      NINJA
      wrote on last edited by
      #70

      @oldman Progressive springs are on my phase 2 upgrade wish list for my MX, If I had kept my DTR I would have fitted Wirth progressive springs to it. There are quite a few reviews out there, so a Google search is well worth the effort to be more informed. I found these 2 to be quite illuminating tho;

      https://motorbikewriter.com/progressive-linear-springs/

      https://www.xt660.com/showthread.php?t=19823

      It appears that rider weight and riding style affect the progressive springs more as the forks become compressed. AKA Greater compression increases the stiffness of the forks. Obviously the heavier the rider the more pre-load is placed on the forks, ergo more compression. And if you're an aggressive rider then the same stiffness applies, during the increased bouts of fork compression. The true test would be to ride 2 identical bikes other than standard springs vs progressive springs and then you will have an instant comparison.

      SEDUCED BY THE DARK SIDE!!!

      O 1 Reply Last reply
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      • NINJAN NINJA

        @oldman Progressive springs are on my phase 2 upgrade wish list for my MX, If I had kept my DTR I would have fitted Wirth progressive springs to it. There are quite a few reviews out there, so a Google search is well worth the effort to be more informed. I found these 2 to be quite illuminating tho;

        https://motorbikewriter.com/progressive-linear-springs/

        https://www.xt660.com/showthread.php?t=19823

        It appears that rider weight and riding style affect the progressive springs more as the forks become compressed. AKA Greater compression increases the stiffness of the forks. Obviously the heavier the rider the more pre-load is placed on the forks, ergo more compression. And if you're an aggressive rider then the same stiffness applies, during the increased bouts of fork compression. The true test would be to ride 2 identical bikes other than standard springs vs progressive springs and then you will have an instant comparison.

        O Offline
        O Offline
        oldman
        wrote on last edited by
        #71

        @NINJA
        Thanks for that, read both and still undecided🤔
        Don't find the suspension on the red bike wanting TBH, ordered new seals and bushes Inc oil. Probably stick with the originals and change later if I feel I have to.

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        • O Offline
          O Offline
          oldman
          wrote on last edited by
          #72

          Have ordered the jet needle I need 3 times now (fowlers, csmnl, yamaha France) and each time after a few days have elapsed receive a message saying not available and refund issued (all advertising for sale). Tried Allen's with no joy and only option is aftermarket one for TZR125 same era, one digit off correct part no compatibility. Any suggestions? Mikuni round slide btw.

          CalumC 1 Reply Last reply
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          • O oldman

            Have ordered the jet needle I need 3 times now (fowlers, csmnl, yamaha France) and each time after a few days have elapsed receive a message saying not available and refund issued (all advertising for sale). Tried Allen's with no joy and only option is aftermarket one for TZR125 same era, one digit off correct part no compatibility. Any suggestions? Mikuni round slide btw.

            CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #73

            @oldman The stock needle? I guess it's just an old carb right? Still seems odd not to have it anywhere.

            Always Originate, Never Pirate!

            1 Reply Last reply
            0
            • O Offline
              O Offline
              oldman
              wrote on last edited by
              #74

              Tried yamaha UK customer services and last one listed as sold in 2013!. Did order aftermarket kit for tzr from Wemoto that lists needle jet one digit off dt one, still waiting for that 1 week on. Will keep looking but only hope seems to be picking up nos one on eBay eventually, or complete new carb from csmnl for lots of dosh.

              NINJAN 1 Reply Last reply
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              • O oldman

                Tried yamaha UK customer services and last one listed as sold in 2013!. Did order aftermarket kit for tzr from Wemoto that lists needle jet one digit off dt one, still waiting for that 1 week on. Will keep looking but only hope seems to be picking up nos one on eBay eventually, or complete new carb from csmnl for lots of dosh.

                NINJAN Offline
                NINJAN Offline
                NINJA
                wrote on last edited by
                #75

                @oldman Have you tried the FB groups or known DT breakers???

                https://dt125r.co.uk/topic/562/parts-suppliers-database/5

                SEDUCED BY THE DARK SIDE!!!

                O 1 Reply Last reply
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                • NINJAN NINJA

                  @oldman Have you tried the FB groups or known DT breakers???

                  https://dt125r.co.uk/topic/562/parts-suppliers-database/5

                  O Offline
                  O Offline
                  oldman
                  wrote on last edited by
                  #76

                  @NINJA trying for new to be honest, had some s/h bits already that are below what I wanted. My reasoning being if it's new as specified it can't be wrong, too fussy that's my problem!

                  1 Reply Last reply
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                  • O Offline
                    O Offline
                    oldman
                    wrote on last edited by
                    #77

                    Have not posted an update for a while, progress is slow (its summer!) Forks rebuilt and calipers prepared, headlight, instruments and handlebars fitted, loads of other small jobs done. Waiting on brake caliper piston and bleed nipples. Wheels need rebuilding soon so need to sort a decent pair for that. Finally received a carb needle that should do the job (tzr), ordered correct one 3 times from different suppliers and refunded 3 times when they did not have one. Pictures to follow.

                    1 Reply Last reply
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                    • O Offline
                      O Offline
                      oldman
                      wrote on last edited by
                      #78

                      IMAG0139-2016x1512.jpg IMAG0141-2016x1512.jpg IMAG0140-2016x1512.jpg

                      1 Reply Last reply
                      3
                      • O Offline
                        O Offline
                        oldman
                        wrote on last edited by
                        #79

                        IMAG0142-2016x1512.jpg

                        NINJAN 1 Reply Last reply
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                        • O oldman

                          IMAG0142-2016x1512.jpg

                          NINJAN Offline
                          NINJAN Offline
                          NINJA
                          wrote on last edited by
                          #80

                          @oldman Looking good bud, did you respray all those shiny black parts yourself???

                          SEDUCED BY THE DARK SIDE!!!

                          1 Reply Last reply
                          0
                          • O Offline
                            O Offline
                            oldman
                            wrote on last edited by
                            #81

                            I did, acid etch primer, top coat x 2 and petrol resistant laquer then baked in my greenhouse for a week. Handlebars and side stand powdercoated though.

                            1 Reply Last reply
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                            • O Offline
                              O Offline
                              oldman
                              wrote on last edited by
                              #82

                              Thats how they were in 88 endurance blue btw, all black trimmings. Received pics from Yamaha customer services, they were pretty helpful tbh, sent me service manual too

                              1 Reply Last reply
                              1
                              • CalumC Offline
                                CalumC Offline
                                Calum
                                wrote on last edited by
                                #83

                                Oh yes that looks fabulous.

                                Always Originate, Never Pirate!

                                1 Reply Last reply
                                1
                                • O Offline
                                  O Offline
                                  oldman
                                  wrote on last edited by
                                  #84

                                  Well wadayano, csmnl found the needle jet kit I needed after all, finally arrived today so that's to be done. Have sorted wheels to be done, just need to strip them down before sending off. Otherwise progressing well, filled all the fluids and changed the powervalve motor (laboured when I powered up the bike). Might be finished before Christmas if the wheels don't delay me.20190911_113759-1024x576.jpg
                                  20190909_211933-576x1024.jpg

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                                  • M Offline
                                    M Offline
                                    mhbikesnbits
                                    wrote on last edited by
                                    #85

                                    Really nice just gone through your post catch up on it coming on really well looks amazing

                                    1 Reply Last reply
                                    0
                                    • O Offline
                                      O Offline
                                      oldman
                                      wrote on last edited by
                                      #86

                                      This is definitely the last dt I am doing, have a tdr250 waiting to be done. Have used all genuine Yamaha Parts where they have been available so it's cost a small fortune, even brake lines are genuine new. It has cost far more than I thought as I underestimated how much was missing. All bodywork is genuine new including fuel tank, will be as close to a new 88 dt as I can make it. Will I make any money on it? Never

                                      CalumC 1 Reply Last reply
                                      0
                                      • O oldman

                                        This is definitely the last dt I am doing, have a tdr250 waiting to be done. Have used all genuine Yamaha Parts where they have been available so it's cost a small fortune, even brake lines are genuine new. It has cost far more than I thought as I underestimated how much was missing. All bodywork is genuine new including fuel tank, will be as close to a new 88 dt as I can make it. Will I make any money on it? Never

                                        CalumC Offline
                                        CalumC Offline
                                        Calum
                                        wrote on last edited by
                                        #87

                                        @oldman Don't say that. Your builds are special. Its not all about money. Its almost like giving something back to the world. These are dying off and you just aren't seeing them like you used to.

                                        I have jusy bought another project, it's not going to make money. But it will be nice to put another bike back on the road for someone else to enjoy.

                                        Keep up the good work!

                                        Always Originate, Never Pirate!

                                        1 Reply Last reply
                                        0
                                        • O Offline
                                          O Offline
                                          oldman
                                          wrote on last edited by
                                          #88

                                          Spill the beans then Calum, what have you bought!

                                          declanD 1 Reply Last reply
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