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DT125R FORUM

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4dlhistorytuningdtr
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  • CalumC Calum

    @Darty Difference is, this is a fully fledged GP Bike. Aprilia RS you buy on the road. They were competitive, but obviously no match for a bike designed solely for track. Nice diagrams πŸ˜„

    DartyD Offline
    DartyD Offline
    Darty
    wrote on last edited by Darty
    #60

    @Calum Spend my loose change on Brochures to often,

    Aprilia did run the RS125GPs or RS125R. late 1980's and 90s. A works engine and chassis from which the RS125's were developed. Not much info on them.

    Keep it real

    CalumC 1 Reply Last reply
    1
    • DartyD Darty

      @Calum Spend my loose change on Brochures to often,

      Aprilia did run the RS125GPs or RS125R. late 1980's and 90s. A works engine and chassis from which the RS125's were developed. Not much info on them.

      CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #61

      @Darty Oh I wasn't implying the rotax 122 was left stock. No doubt they had a revised version. That said today they use it in the 125 series amongst hondas rs125. Don't kmow if Yammy is still doing tzs

      Always Originate, Never Pirate!

      1 Reply Last reply
      0
      • DartyD Offline
        DartyD Offline
        Darty
        wrote on last edited by Darty
        #62

        @Calum No production of the TZs since 05' I think. It's a mad one, I've been looking at imported Japanese spec RS125 engines to drop into a production frame, What a project to build!

        Keep it real

        CalumC 1 Reply Last reply
        1
        • DartyD Darty

          @Calum No production of the TZs since 05' I think. It's a mad one, I've been looking at imported Japanese spec RS125 engines to drop into a production frame, What a project to build!

          CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #63

          @Darty I am not familiar with the NS125. What is it?

          Always Originate, Never Pirate!

          1 Reply Last reply
          0
          • DartyD Offline
            DartyD Offline
            Darty
            wrote on last edited by Mightyman
            #64

            @Calum Yeah WTF.. Lost my way. NS125 is this 80s gem.

            Basically don't listen to me, I meant the Honda RS' 125.

            Keep it real

            1 Reply Last reply
            2
            • CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #65

              Mmmm that ns is nice. Presumably then the ns125r became nsr125 which I have heard of.

              Yeah Hondas RS125 us savage.

              Never sren one irl though

              Always Originate, Never Pirate!

              1 Reply Last reply
              0
              • DartyD Offline
                DartyD Offline
                Darty
                wrote on last edited by Mightyman
                #66

                Yamaha DT200R 3ET. 1989. - Still a pogo stick. 28hp?

                Lire FranΓ§ais?

                Up to 2001. 3RMs

                Keep it real

                1 Reply Last reply
                0
                • CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #67

                  I am certain a revision of the 3et made decent power. TOWIY would know more aboht that than me tbough.

                  Always Originate, Never Pirate!

                  1 Reply Last reply
                  0
                  • DartyD Offline
                    DartyD Offline
                    Darty
                    wrote on last edited by Mightyman
                    #68

                    Yamaha TZM150.

                    Nicasil bore, 4HF-00 or 4AP-00 - 147cc

                    Looks very close to matching DT/TZR crankcases, but not quite.

                    TZM has the same stroke/ crankshaft as the 125s, really strange engine by Yamaha for the East Asian market. Rated at 34hp, apparently. But more like 30.

                    hmmm...Looks like a crap TZR. Or just like a TZR50.

                    And then a TZM 50, which I just found today, Thought man, that's pretty cool.

                    But, street legal road bike for whom? An 8year old? Lke TDR80's they are hilarious, proper bits of kit, just shrunk in the washing machine.

                    Keep it real

                    CalumC 1 Reply Last reply
                    1
                    • DartyD Darty

                      Yamaha TZM150.

                      Nicasil bore, 4HF-00 or 4AP-00 - 147cc

                      Looks very close to matching DT/TZR crankcases, but not quite.

                      TZM has the same stroke/ crankshaft as the 125s, really strange engine by Yamaha for the East Asian market. Rated at 34hp, apparently. But more like 30.

                      hmmm...Looks like a crap TZR. Or just like a TZR50.

                      And then a TZM 50, which I just found today, Thought man, that's pretty cool.

                      But, street legal road bike for whom? An 8year old? Lke TDR80's they are hilarious, proper bits of kit, just shrunk in the washing machine.

                      CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by
                      #69

                      @Darty That TZM 50 is lush

                      Always Originate, Never Pirate!

                      DartyD 1 Reply Last reply
                      0
                      • CalumC Calum

                        @Darty That TZM 50 is lush

                        DartyD Offline
                        DartyD Offline
                        Darty
                        wrote on last edited by
                        #70

                        @Calum I want one for round town

                        Keep it real

                        1 Reply Last reply
                        0
                        • DartyD Offline
                          DartyD Offline
                          Darty
                          wrote on last edited by Mightyman
                          #71

                          1988' Japanese market promotional material. Japanese aesthetic has a way of producing great graphic design. I'd like to say this is a fairly rare find even coming from Japan.

                          That bash plate though!? I want.

                          88-92' or so, the DT125R is advertised with a DT200R headlight and Alloy wheels for the JDM market.

                          These have to be the best illustrations I've seen out of the promo so far.

                          The DT200R always had a Yamaha Mikuni TM28ss, was always in the pipeline for the 125R.


                          I can believe that the intended output for a DT125R is 22ps, which is about 21hp.

                          Keep it real

                          CalumC 1 Reply Last reply
                          0
                          • DartyD Darty

                            1988' Japanese market promotional material. Japanese aesthetic has a way of producing great graphic design. I'd like to say this is a fairly rare find even coming from Japan.

                            That bash plate though!? I want.

                            88-92' or so, the DT125R is advertised with a DT200R headlight and Alloy wheels for the JDM market.

                            These have to be the best illustrations I've seen out of the promo so far.

                            The DT200R always had a Yamaha Mikuni TM28ss, was always in the pipeline for the 125R.


                            I can believe that the intended output for a DT125R is 22ps, which is about 21hp.

                            CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by
                            #72

                            @Darty Wow, you certainly don't see many of those multicolour front mudguards!!

                            Always Originate, Never Pirate!

                            DartyD 1 Reply Last reply
                            0
                            • CalumC Calum

                              @Darty Wow, you certainly don't see many of those multicolour front mudguards!!

                              DartyD Offline
                              DartyD Offline
                              Darty
                              wrote on last edited by
                              #73

                              Check this all, 2RH Turbo.

                              https://www.youtube.com/watch?v=Oxj_OAb5bqk&list=LL5qGGE0mJaCm9BMMu7reYUQ&index=1

                              lol.

                              @Calum I found a couple of those bolt on mudskirts in Japan, just need a standard DTR to bolt it too πŸ˜†

                              Keep it real

                              NINJAN 1 Reply Last reply
                              2
                              • DartyD Darty

                                Check this all, 2RH Turbo.

                                https://www.youtube.com/watch?v=Oxj_OAb5bqk&list=LL5qGGE0mJaCm9BMMu7reYUQ&index=1

                                lol.

                                @Calum I found a couple of those bolt on mudskirts in Japan, just need a standard DTR to bolt it too πŸ˜†

                                NINJAN Offline
                                NINJAN Offline
                                NINJA
                                wrote on last edited by
                                #74

                                @Darty Man where do you find all this stuff? You must spend hours searching for it???

                                Good job though. πŸ‘

                                SEDUCED BY THE DARK SIDE!!!

                                DartyD 1 Reply Last reply
                                0
                                • NINJAN NINJA

                                  @Darty Man where do you find all this stuff? You must spend hours searching for it???

                                  Good job though. πŸ‘

                                  DartyD Offline
                                  DartyD Offline
                                  Darty
                                  wrote on last edited by Darty
                                  #75

                                  @CYBER-NINJA lol Not much, find this shit by accident mostly.

                                  Keep it real

                                  1 Reply Last reply
                                  1
                                  • DartyD Offline
                                    DartyD Offline
                                    Darty
                                    wrote on last edited by Mightyman
                                    #76

                                    Bought a cool advertisement from 89'

                                    Keep it real

                                    NINJAN 1 Reply Last reply
                                    0
                                    • DartyD Darty

                                      Bought a cool advertisement from 89'

                                      NINJAN Offline
                                      NINJAN Offline
                                      NINJA
                                      wrote on last edited by
                                      #77

                                      @Darty Man even nearly 30 years old, those bikes look awesome when new. πŸ™‚

                                      SEDUCED BY THE DARK SIDE!!!

                                      1 Reply Last reply
                                      0
                                      • DartyD Offline
                                        DartyD Offline
                                        Darty
                                        wrote on last edited by Darty
                                        #78

                                        KTM in from the mid 80's were pretty werid and poor quality. Some of the best looking MX bikes of all time I think. And in 1985, KTM's were coming out with (White Power) WP nowadays,.. USD forks and front AND rear discs.

                                        For the late 1980s KTM's were pretty tech, but not very good by most accounts.

                                        Just a cool and very forward thinking piece of engineering from 1989, I thought I would share MXA's Write up, the only Magazine to get to test it, for the KTM 125MX AMP Prototype.

                                        http://amp-research.com/wp-content/files/MXA_AMP_KTM_May2013.pdf

                                        A really interesting time in Motocross development and the beginning of real refinement of the 2stroke for off-road racing.

                                        Keep it real

                                        1 Reply Last reply
                                        1
                                        • DartyD Offline
                                          DartyD Offline
                                          Darty
                                          wrote on last edited by Darty
                                          #79

                                          This a crackin build btw, check out this Rotax (123), that's right...
                                          https://www.youtube.com/watch?v=BU5bFu5eo0g

                                          Keep it real

                                          CalumC NINJAN 2 Replies Last reply
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