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DT125R FORUM

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  4. What size sprockets

What size sprockets

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  • F Offline
    F Offline
    finnerz89
    wrote on last edited by
    #2

    Acceleration > top end in my opinion.
    I'm running 1 tooth smaller on the front. You have to get out of 1st sharpish, but it pulls nicely through all the gears.

    Current bikes:
    DT125X '07
    Street Triple R '11
    Aprilia ETV1000 '02

    Previous:
    DR650RSE '96
    FJ1200 '92

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    • A Offline
      A Offline
      andrewj1680
      wrote on last edited by
      #3

      I have 1 bike running 15 front and 57 teeth rear tops out at 70mph , another running 16 front 53 rear tops out at 68 another running 17 front 52 rear not sure what its topping out as the speedo isnt working and another 50 rear and 13 up front but no speedo at all lol

      1 Reply Last reply
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      • F Offline
        F Offline
        finnerz89
        wrote on last edited by
        #4

        Looks like you have more experience than most with different ratios lol.

        Current bikes:
        DT125X '07
        Street Triple R '11
        Aprilia ETV1000 '02

        Previous:
        DR650RSE '96
        FJ1200 '92

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        0
        • terry.tzT Offline
          terry.tzT Offline
          terry.tz
          wrote on last edited by
          #5

          16/57 gets to 70 like wiz head on the run dont take much more than a few seconds to get 80

          • if the winds behind you or its down hit

          "Muddy water is best cleared by leaving it alone" Alan Watts

          terry.tzT A 2 Replies Last reply
          0
          • terry.tzT terry.tz

            16/57 gets to 70 like wiz head on the run dont take much more than a few seconds to get 80

            • if the winds behind you or its down hit
            terry.tzT Offline
            terry.tzT Offline
            terry.tz
            wrote on last edited by
            #6

            standard pipe no mods and sh!t compression i think

            "Muddy water is best cleared by leaving it alone" Alan Watts

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            • terry.tzT terry.tz

              16/57 gets to 70 like wiz head on the run dont take much more than a few seconds to get 80

              • if the winds behind you or its down hit
              A Offline
              A Offline
              andrewj1680
              wrote on last edited by
              #7

              @terry-tz think I'll try that 1 combo closest to that i have is 15/57 but it is fast til 70 but wont go even a mph over weather down hill or up hill it doesnt matter, the engine has a tuned cylinder and modded head so even in top gear it pulls like a train but once it hits that 70 thats it

              terry.tzT 1 Reply Last reply
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              • A andrewj1680

                @terry-tz think I'll try that 1 combo closest to that i have is 15/57 but it is fast til 70 but wont go even a mph over weather down hill or up hill it doesnt matter, the engine has a tuned cylinder and modded head so even in top gear it pulls like a train but once it hits that 70 thats it

                terry.tzT Offline
                terry.tzT Offline
                terry.tz
                wrote on last edited by
                #8

                @andrewj1680 tbh I'm 80 mph every where I go but with knobbly tyres it feels f!cked up when you're leaning nothing but curvy roads around

                "Muddy water is best cleared by leaving it alone" Alan Watts

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                • DartyD Offline
                  DartyD Offline
                  Darty
                  wrote on last edited by
                  #9

                  I can push 90 now 😆

                  Keep it real

                  terry.tzT 1 Reply Last reply
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                  • DartyD Darty

                    I can push 90 now 😆

                    terry.tzT Offline
                    terry.tzT Offline
                    terry.tz
                    wrote on last edited by
                    #10

                    @darty sprockets

                    "Muddy water is best cleared by leaving it alone" Alan Watts

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                    • DartyD Offline
                      DartyD Offline
                      Darty
                      wrote on last edited by
                      #11

                      13/55T on 520 pitch.

                      But having tuned it, it still pulls hard at 12k

                      Keep it real

                      terry.tzT 1 Reply Last reply
                      0
                      • DartyD Darty

                        13/55T on 520 pitch.

                        But having tuned it, it still pulls hard at 12k

                        terry.tzT Offline
                        terry.tzT Offline
                        terry.tz
                        wrote on last edited by
                        #12

                        @darty you have a 200 in yours to don't you

                        "Muddy water is best cleared by leaving it alone" Alan Watts

                        DartyD 1 Reply Last reply
                        0
                        • terry.tzT terry.tz

                          @darty you have a 200 in yours to don't you

                          DartyD Offline
                          DartyD Offline
                          Darty
                          wrote on last edited by
                          #13

                          @terry-tz I wish, I run a 134cc with racing head work.

                          Keep it real

                          terry.tzT 1 Reply Last reply
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                          • A Offline
                            A Offline
                            andrewj1680
                            wrote on last edited by
                            #14

                            I have a rebuilt wr200 going into mine that did 104mph before it was rebuilt and mick abbey tuning cylinder and modded head, I'm having frame painted monday/tuesday i had the wr200 fork clamps bored to take the dt head stem and all the alloy rear swingarm and shock has been stripped right back and polished, not sure if I'm gonna run a wr200 loom and cdi or dt loom with zeeltronic

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                            • CalumC Offline
                              CalumC Offline
                              Calum
                              wrote on last edited by
                              #15

                              @finnerz89 IF you have a bigger bike, then I totally agree. But for me the bike was my sole transport and I needed to do dual carrigeway speeds, so I was able to rag it to 80, but sit at 70 comfortably.

                              Always Originate, Never Pirate!

                              1 Reply Last reply
                              1
                              • DartyD Darty

                                @terry-tz I wish, I run a 134cc with racing head work.

                                terry.tzT Offline
                                terry.tzT Offline
                                terry.tz
                                wrote on last edited by
                                #16

                                @darty my bad
                                @Calum I need to do some carriageway but can't imagine it being a comfortable bike for it il soon find out I guess

                                "Muddy water is best cleared by leaving it alone" Alan Watts

                                CalumC 1 Reply Last reply
                                1
                                • J Offline
                                  J Offline
                                  Jens Eskildsen
                                  wrote on last edited by
                                  #17

                                  14-48 in 520, seems good for most things.

                                  1 Reply Last reply
                                  0
                                  • terry.tzT terry.tz

                                    @darty my bad
                                    @Calum I need to do some carriageway but can't imagine it being a comfortable bike for it il soon find out I guess

                                    CalumC Offline
                                    CalumC Offline
                                    Calum
                                    wrote on last edited by
                                    #18

                                    @terry-tz Nope. Horrible. just feels like you're going to seize the engine lol.

                                    Always Originate, Never Pirate!

                                    declanD 1 Reply Last reply
                                    0
                                    • CalumC Calum

                                      @terry-tz Nope. Horrible. just feels like you're going to seize the engine lol.

                                      declanD Offline
                                      declanD Offline
                                      declan
                                      wrote on last edited by
                                      #19

                                      @calum I haven't been able to top mine out anywhere how do you lads find the space? 😂😂😂

                                      A terry.tzT 2 Replies Last reply
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                                      • declanD declan

                                        @calum I haven't been able to top mine out anywhere how do you lads find the space? 😂😂😂

                                        A Offline
                                        A Offline
                                        andrewj1680
                                        wrote on last edited by
                                        #20

                                        @declan not alot of space needed bud they get there nice and fast

                                        CalumC 1 Reply Last reply
                                        0
                                        • A andrewj1680

                                          @declan not alot of space needed bud they get there nice and fast

                                          CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by
                                          #21

                                          @andrewj1680 Yeah I was thinking this.

                                          Couple hundred yards and she'd be maxed out.

                                          Always Originate, Never Pirate!

                                          declanD A 2 Replies Last reply
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