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DT125R FORUM

  1. Home
  2. General Discussion
  3. Unusual vibrations

Unusual vibrations

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  • CalumC Offline
    CalumC Offline
    Calum
    wrote on last edited by
    #2

    Yeah the balancer shaft MUST be timed up with the engine else you will get massive vibrations through the handlebars. Like hand numbimg vibrations.

    Always Originate, Never Pirate!

    A 1 Reply Last reply
    0
    • CalumC Calum

      Yeah the balancer shaft MUST be timed up with the engine else you will get massive vibrations through the handlebars. Like hand numbimg vibrations.

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

      @Calum guessing that will be the issue here then 😕

      1 Reply Last reply
      0
      • CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #4

        Yeah, there is a dot on both the primary gear and the balancer shaft output gear.

        When the piston is at TDC those two dots should be aligned.

        To be honest, it should be possible to reallign it with the engine in the frame, and really isn't that big of a job.

        Obviously you won't know where TDC is, but just turn the cogs until they the primary shaft dot is on the left on the horizontal plane. The slide in the balancer shaft cog. No biggie.

        Always Originate, Never Pirate!

        A 1 Reply Last reply
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        • CalumC Calum

          Yeah, there is a dot on both the primary gear and the balancer shaft output gear.

          When the piston is at TDC those two dots should be aligned.

          To be honest, it should be possible to reallign it with the engine in the frame, and really isn't that big of a job.

          Obviously you won't know where TDC is, but just turn the cogs until they the primary shaft dot is on the left on the horizontal plane. The slide in the balancer shaft cog. No biggie.

          A Offline
          A Offline
          andrewj1680
          wrote on last edited by
          #5

          @Calum thanks mate sounds easy enough I'll try get it apart over the next couple of days i have noticed even just on idle you can feel the vibration so its looking like thats all the problem is

          1 Reply Last reply
          0
          • C Offline
            C Offline
            castrolsniffer
            wrote on last edited by
            #6

            Check they balanced the clutch properly as this also causes vibration if not built correctly,good luck bud 😉

            1 Reply Last reply
            1
            • CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #7

              Ah yeah forgot about the clutch.

              I know when it's really bad your hands go numb, that tends to be the balancer shaft.

              Always Originate, Never Pirate!

              1 Reply Last reply
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              • A Offline
                A Offline
                andrewj1680
                wrote on last edited by
                #8

                0_1497567449216_20170615_235410.jpg
                This look about right?

                CalumC 1 Reply Last reply
                1
                • A andrewj1680

                  0_1497567449216_20170615_235410.jpg
                  This look about right?

                  CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #9

                  @andrewj1680 Perfect.

                  As said redo the clutch plates and ensure the clutch has been balanced properly.

                  I forgot about that.

                  If it's not that , then just ensure all the engine mounts are done up properly.

                  Always Originate, Never Pirate!

                  1 Reply Last reply
                  0
                  • A Offline
                    A Offline
                    andrewj1680
                    wrote on last edited by
                    #10

                    0_1497567636181_20170615_235912.jpg
                    0_1497567658038_20170615_235925.jpg
                    Thanks lads i think this maybe the cause of my vibrations what do you guys think? Looks like someone has stuck it with something

                    A NINJAN CalumC 3 Replies Last reply
                    0
                    • A andrewj1680

                      0_1497567636181_20170615_235912.jpg
                      0_1497567658038_20170615_235925.jpg
                      Thanks lads i think this maybe the cause of my vibrations what do you guys think? Looks like someone has stuck it with something

                      A Offline
                      A Offline
                      andrewj1680
                      wrote on last edited by
                      #11

                      @andrewj1680 also a couple of teeth missing on the water cog

                      1 Reply Last reply
                      0
                      • A andrewj1680

                        0_1497567636181_20170615_235912.jpg
                        0_1497567658038_20170615_235925.jpg
                        Thanks lads i think this maybe the cause of my vibrations what do you guys think? Looks like someone has stuck it with something

                        NINJAN Offline
                        NINJAN Offline
                        NINJA
                        wrote on last edited by
                        #12

                        @andrewj1680 Yep they do look a tad FOOKED for-sure!!! 😉

                        SEDUCED BY THE DARK SIDE!!!

                        1 Reply Last reply
                        0
                        • A Offline
                          A Offline
                          andrewj1680
                          wrote on last edited by
                          #13

                          I dont understand why someone would go through whole process of rebuilding a engine and the to glue a plastic cog which ive just ordered new is only £13 gets me

                          1 Reply Last reply
                          0
                          • A andrewj1680

                            0_1497567636181_20170615_235912.jpg
                            0_1497567658038_20170615_235925.jpg
                            Thanks lads i think this maybe the cause of my vibrations what do you guys think? Looks like someone has stuck it with something

                            CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by
                            #14

                            @andrewj1680 Ah has it come away then?

                            That doesn't look good. Best replace those cogs.

                            Always Originate, Never Pirate!

                            1 Reply Last reply
                            0
                            • A Offline
                              A Offline
                              andrewj1680
                              wrote on last edited by
                              #15

                              Its only the waterpump 1 whatever theey used to glue it has melted the propeller so it must of been running at nearly a 45 degree angle nowonder i had vibrations, just not sure if i am able to get the oil baffle plate as its bent it

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