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DT125R FORUM

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  3. Welcome New Owners!
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New member

Scheduled Pinned Locked Moved Welcome New Owners!
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  • K Offline
    K Offline
    kevb1967
    wrote on last edited by
    #1

    Hi just joined today as just got another DT 2002 after my last one 33 years a go

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    1
    • CalumC Online
      CalumC Online
      Calum
      wrote on last edited by
      #2

      Hello there!

      Welcome to the forum.

      That's certainly a long time ago? What DT did you have back then? An mx?

      Always Originate, Never Pirate!

      K 1 Reply Last reply
      0
      • CalumC Calum

        Hello there!

        Welcome to the forum.

        That's certainly a long time ago? What DT did you have back then? An mx?

        K Offline
        K Offline
        kevb1967
        wrote on last edited by
        #3

        @Calum had a DT125 MK1 black stage 3 tuned by slipsteam kent

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        • CalumC Online
          CalumC Online
          Calum
          wrote on last edited by
          #4

          @kevb1967 said in New member:

          DT125 MK1

          The LC?

          alt text

          Always Originate, Never Pirate!

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          • K Offline
            K Offline
            kevb1967
            wrote on last edited by
            #5

            XIYL7888.JPG new one having a few problems does 65-70 mph in 5th but when you go to 6th nothing happens also only restarts when hot on full throttle mods new front pipe .read switch removed from housing,6in away from Speedo, read block rubber reshaped carb ,restored std has main jet 240, model 3RML-010 Portuguese ? CDI 3RM-30 any suggestions

            Louis-DT-WRL markus.wM 2 Replies Last reply
            0
            • K kevb1967

              XIYL7888.JPG new one having a few problems does 65-70 mph in 5th but when you go to 6th nothing happens also only restarts when hot on full throttle mods new front pipe .read switch removed from housing,6in away from Speedo, read block rubber reshaped carb ,restored std has main jet 240, model 3RML-010 Portuguese ? CDI 3RM-30 any suggestions

              Louis-DT-WRL Offline
              Louis-DT-WRL Offline
              Louis-DT-WR
              wrote on last edited by
              #6

              @kevb1967 not enough power to pull the gear. Probably need a smaller front sprocket

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              • K Offline
                K Offline
                kevb1967
                wrote on last edited by
                #7

                thanks I will check the number of teeth on the front sprocket do you know what is std

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                • K kevb1967

                  XIYL7888.JPG new one having a few problems does 65-70 mph in 5th but when you go to 6th nothing happens also only restarts when hot on full throttle mods new front pipe .read switch removed from housing,6in away from Speedo, read block rubber reshaped carb ,restored std has main jet 240, model 3RML-010 Portuguese ? CDI 3RM-30 any suggestions

                  markus.wM Offline
                  markus.wM Offline
                  markus.w
                  wrote on last edited by
                  #8

                  @kevb1967 welcome, very nice looking DT you have. My French import has the 3rm-30 CDI and I understand that they're one of the best.

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                  • K Offline
                    K Offline
                    kevb1967
                    wrote on last edited by
                    #9

                    thanks how high does yours rev to

                    markus.wM 1 Reply Last reply
                    0
                    • K kevb1967

                      thanks how high does yours rev to

                      markus.wM Offline
                      markus.wM Offline
                      markus.w
                      wrote on last edited by
                      #10

                      @kevb1967 mine has no clocks and it has the 170 kit but it does have very good top end and revs freely. Also the powervalve is pinned open so after about 6k it sort of comes alive. Is your powervalve working ok?

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                      • CalumC Online
                        CalumC Online
                        Calum
                        wrote on last edited by
                        #11

                        Unfortunately, the 2002 models were heavily restricted. Even with the derestrictions you can still expect problems.

                        Get yourself an aftermarket CDI and all those problems will go away and it'll fly through the gears.

                        Looks tidy though!

                        Always Originate, Never Pirate!

                        K 1 Reply Last reply
                        0
                        • CalumC Calum

                          Unfortunately, the 2002 models were heavily restricted. Even with the derestrictions you can still expect problems.

                          Get yourself an aftermarket CDI and all those problems will go away and it'll fly through the gears.

                          Looks tidy though!

                          K Offline
                          K Offline
                          kevb1967
                          wrote on last edited by
                          #12

                          @Calum thanks any links to them

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                          • CalumC Online
                            CalumC Online
                            Calum
                            wrote on last edited by
                            #13

                            https://www.zeeltronic.com/page/yamaha.php

                            Always Originate, Never Pirate!

                            K 1 Reply Last reply
                            0
                            • CalumC Calum

                              https://www.zeeltronic.com/page/yamaha.php

                              K Offline
                              K Offline
                              kevb1967
                              wrote on last edited by
                              #14

                              @Calum is a 3rm-20 CDI any good as i see they are not restricted

                              markus.wM 1 Reply Last reply
                              0
                              • K kevb1967

                                @Calum is a 3rm-20 CDI any good as i see they are not restricted

                                markus.wM Offline
                                markus.wM Offline
                                markus.w
                                wrote on last edited by
                                #15

                                @kevb1967 no it's not restricted but if you have the 3rm-30 that is the best one, only available on the French models from 1999-2002 and apparently quite special and rare. Here's a link to a German website which explains the different CDI's. http://dtpedia.de/mediawiki/index.php/CDI_Steuerteile
                                I don't think your problem is a restriction problem, only starting on full throttle from hot? Maybe fuelling or maybe compression? Sounds like your bike is a full power unrestricted french import.

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                                • K Offline
                                  K Offline
                                  kevb1967
                                  wrote on last edited by
                                  #16

                                  hi thanks mine seams to be portages' but registered as new 2002 in the uk ,its a 3rml-010 and 4bl engine stamp, 3rm-30 cdi ,goes like a rocket to 70mph in 5th, but wont pull hard and or enter the power band in 6th gear and only revs to 9000 but not in 6th ,16/57 gearing refurbished carb std 140 main jet, read switch removed away from Speedo, snorkel removed from air box, read block rubber reshaped big one exhaust any ideas anyone .so near but so far some one musts know ?

                                  CalumC 1 Reply Last reply
                                  0
                                  • K kevb1967

                                    hi thanks mine seams to be portages' but registered as new 2002 in the uk ,its a 3rml-010 and 4bl engine stamp, 3rm-30 cdi ,goes like a rocket to 70mph in 5th, but wont pull hard and or enter the power band in 6th gear and only revs to 9000 but not in 6th ,16/57 gearing refurbished carb std 140 main jet, read switch removed away from Speedo, snorkel removed from air box, read block rubber reshaped big one exhaust any ideas anyone .so near but so far some one musts know ?

                                    CalumC Online
                                    CalumC Online
                                    Calum
                                    wrote on last edited by
                                    #17

                                    @kevb1967 I mean, it's a 125.doing 70 like that. Could just be gearing.

                                    Always Originate, Never Pirate!

                                    K 1 Reply Last reply
                                    0
                                    • K Offline
                                      K Offline
                                      kevb1967
                                      wrote on last edited by
                                      #18

                                      16/57 gearing is this std ? should it rev over 9000 revs

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                                      0
                                      • CalumC Online
                                        CalumC Online
                                        Calum
                                        wrote on last edited by
                                        #19

                                        The 2000-2004 era were notoriously restricted.

                                        Also appreciate that a lot of these bikes were ridden by youngsters weighing 60-70kgs.

                                        Always Originate, Never Pirate!

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                                        • K Offline
                                          K Offline
                                          kevb1967
                                          wrote on last edited by
                                          #20

                                          r u saying i need to loose weight , am at 12 st 12lb so down hill it would be faster ?

                                          CalumC 1 Reply Last reply
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