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DT125R FORUM

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  4. Clutch

Clutch

Scheduled Pinned Locked Moved Engine
67 Posts 7 Posters 15.0k Views 2 Watching
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  • RickyR Ricky

    @Calum it's done 20k not sure when it was rebuilt

    CalumC Offline
    CalumC Offline
    Calum
    wrote on last edited by
    #11

    @Ricky Well if it's original internals then it could be knocking, which will mean it'll need a rebuild.

    if it's been rebuilt then it could be that it hasn't been assembled properly, and the engine hasn't been timed up properly. But the vibration when the engine isn't timed up is really bad!

    Always Originate, Never Pirate!

    RickyR 1 Reply Last reply
    0
    • CalumC Calum

      @Ricky Well if it's original internals then it could be knocking, which will mean it'll need a rebuild.

      if it's been rebuilt then it could be that it hasn't been assembled properly, and the engine hasn't been timed up properly. But the vibration when the engine isn't timed up is really bad!

      RickyR Offline
      RickyR Offline
      Ricky
      wrote on last edited by
      #12

      @Calum it's not that bad I don't think haha but it only started since i put the new clutch in

      DT 125X

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      • MightymanM Offline
        MightymanM Offline
        Mightyman
        wrote on last edited by
        #13

        2 stroke KTMs are renound for an unusual sound if you aren't holding the clutch in but what you are describing seems like more than just this..

        TDR 125 - 2001

        RickyR 1 Reply Last reply
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        • MightymanM Mightyman

          2 stroke KTMs are renound for an unusual sound if you aren't holding the clutch in but what you are describing seems like more than just this..

          RickyR Offline
          RickyR Offline
          Ricky
          wrote on last edited by
          #14

          @Mightyman this never use to do till I changed the clutch

          DT 125X

          CalumC 1 Reply Last reply
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          • RickyR Ricky

            @Mightyman this never use to do till I changed the clutch

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

            @Ricky Probably just paranoai. You definitely got enough oil.in there yeah.

            Always Originate, Never Pirate!

            RickyR 1 Reply Last reply
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            • DartyD Offline
              DartyD Offline
              Darty
              wrote on last edited by
              #16

              Go back in and check the torque on the nuts, is it noisy? like a continuous ticking sound? Clutch plates are slipping if the revs are dying, Re-adjust the clutch action on the clutch itself.

              Mine did this once, but vibration suggests bearing, or loose plates, which seems unlikely.

              Keep it real

              RickyR 2 Replies Last reply
              1
              • CalumC Calum

                @Ricky Probably just paranoai. You definitely got enough oil.in there yeah.

                RickyR Offline
                RickyR Offline
                Ricky
                wrote on last edited by
                #17

                @Calum haha something is different and yeah 750ml

                DT 125X

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                • DartyD Darty

                  Go back in and check the torque on the nuts, is it noisy? like a continuous ticking sound? Clutch plates are slipping if the revs are dying, Re-adjust the clutch action on the clutch itself.

                  Mine did this once, but vibration suggests bearing, or loose plates, which seems unlikely.

                  RickyR Offline
                  RickyR Offline
                  Ricky
                  wrote on last edited by
                  #18

                  @Darty it's more like a thudding noise than a tapping

                  DT 125X

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                  • DartyD Darty

                    Go back in and check the torque on the nuts, is it noisy? like a continuous ticking sound? Clutch plates are slipping if the revs are dying, Re-adjust the clutch action on the clutch itself.

                    Mine did this once, but vibration suggests bearing, or loose plates, which seems unlikely.

                    RickyR Offline
                    RickyR Offline
                    Ricky
                    wrote on last edited by
                    #19

                    @Darty the inner basket spins when I tighten the springs up I've got them tight

                    DT 125X

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                    • RickyR Offline
                      RickyR Offline
                      Ricky
                      wrote on last edited by Ricky
                      #20

                      What's the best way to put the metal plates in sharp side facing the engine or the smothered side I've been told it doesn't matter as long as there all the same way

                      DT 125X

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                      • MightymanM Offline
                        MightymanM Offline
                        Mightyman
                        wrote on last edited by
                        #21

                        Could be worth posting a video so we can hear the noise. Might be easier than describing it 😂

                        TDR 125 - 2001

                        RickyR 1 Reply Last reply
                        0
                        • MightymanM Mightyman

                          Could be worth posting a video so we can hear the noise. Might be easier than describing it 😂

                          RickyR Offline
                          RickyR Offline
                          Ricky
                          wrote on last edited by
                          #22

                          @Mightyman good idea haha I'll do it later

                          DT 125X

                          1 Reply Last reply
                          0
                          • RickyR Offline
                            RickyR Offline
                            Ricky
                            wrote on last edited by Ricky
                            #23

                            A video as promised please ignore the tapping lol
                            https://youtu.be/BdgV44NU6D8

                            DT 125X

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                            • CalumC Offline
                              CalumC Offline
                              Calum
                              wrote on last edited by
                              #24

                              So what's the tapping?

                              The fact the idle goes down with the clutch in doesn't really bother me. I see that a lot, usually the thrust bearings going on the clutch, however we don't have those.

                              What we do have is a primary drive bearing, which if it's on its way out, will vibrate and probably cause this sort of issue.

                              With that sort of mileage on a two stroke, and an uncertainty of the engines age, I'd be stripping it down for a rebuild...

                              I don't think we're going to diagnose it really.

                              If it isn't what I've been suggesting then I really think it might just be an engine rebuild jobby, or paranoia.

                              If it was really bad then you would know. Again it all comes back to how much vibration. If it's a lot, then it's for a reason. But two strokes rattle a lot anyway so it's really hard to tell.

                              Always Originate, Never Pirate!

                              RickyR 1 Reply Last reply
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                              • CalumC Calum

                                So what's the tapping?

                                The fact the idle goes down with the clutch in doesn't really bother me. I see that a lot, usually the thrust bearings going on the clutch, however we don't have those.

                                What we do have is a primary drive bearing, which if it's on its way out, will vibrate and probably cause this sort of issue.

                                With that sort of mileage on a two stroke, and an uncertainty of the engines age, I'd be stripping it down for a rebuild...

                                I don't think we're going to diagnose it really.

                                If it isn't what I've been suggesting then I really think it might just be an engine rebuild jobby, or paranoia.

                                If it was really bad then you would know. Again it all comes back to how much vibration. If it's a lot, then it's for a reason. But two strokes rattle a lot anyway so it's really hard to tell.

                                RickyR Offline
                                RickyR Offline
                                Ricky
                                wrote on last edited by
                                #25

                                @Calum the vibration isn't that bad it's the clutch problem it nearly dies when it's in gear and I pull the clutch in like when I'm at lights waiting to go

                                DT 125X

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                                • MightymanM Offline
                                  MightymanM Offline
                                  Mightyman
                                  wrote on last edited by
                                  #26

                                  From that video alone, I really can't hear anything wrong with it. Definitely could be a case of paranoia like Calum mentioned, just from knowing you've been fiddling around inside the engine. The revs dropping sounds as though it's only happening when you push it down into gear. From my experience this isn't all that uncommon with two strokes. My TDR currently does that and it's not something I'm concerned about. Although I have owned a couple of bikes that would simply cut out if you dropped them into gear without revving them quite a bit. They both had worn clutches though.. If you want serious reassurance, take it to a bike mechanic. Any decent mechanic who's worked with DTs before will be able to tell you if it's okay just by listening/taking a quick look.

                                  TDR 125 - 2001

                                  CalumC 1 Reply Last reply
                                  1
                                  • MightymanM Mightyman

                                    From that video alone, I really can't hear anything wrong with it. Definitely could be a case of paranoia like Calum mentioned, just from knowing you've been fiddling around inside the engine. The revs dropping sounds as though it's only happening when you push it down into gear. From my experience this isn't all that uncommon with two strokes. My TDR currently does that and it's not something I'm concerned about. Although I have owned a couple of bikes that would simply cut out if you dropped them into gear without revving them quite a bit. They both had worn clutches though.. If you want serious reassurance, take it to a bike mechanic. Any decent mechanic who's worked with DTs before will be able to tell you if it's okay just by listening/taking a quick look.

                                    CalumC Offline
                                    CalumC Offline
                                    Calum
                                    wrote on last edited by
                                    #27

                                    @Mightyman Yeah if the dropping when it goes in gear then that's different.

                                    Sounds like the clutch is engaging with the lever pulled in.

                                    You could tell if you put the wheel a paddock stand and do it, if the wheel speeds uo then the clutch is engaging.

                                    Always Originate, Never Pirate!

                                    RickyR 1 Reply Last reply
                                    1
                                    • CalumC Calum

                                      @Mightyman Yeah if the dropping when it goes in gear then that's different.

                                      Sounds like the clutch is engaging with the lever pulled in.

                                      You could tell if you put the wheel a paddock stand and do it, if the wheel speeds uo then the clutch is engaging.

                                      RickyR Offline
                                      RickyR Offline
                                      Ricky
                                      wrote on last edited by
                                      #28

                                      @Calum that's it as soon as I put it in natural it picks back up

                                      DT 125X

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                                      • Biker_123B Offline
                                        Biker_123B Offline
                                        Biker_123
                                        wrote on last edited by
                                        #29

                                        My ktm exc developed a knocking /vibrating sound from the clutch side the knocking would vanish when the clutch lever was pulled in it turned out it just needed a new clutch basket damper cushion which fits between the clutch basket drive gear and the clutch basket... Can't remember if the dt 125 uses a similar set up its been a while since I've been inside that engine but could be worth looking in to! As for the revs dropping when in neutral both my dts done that to so don't think it's much to worry about.

                                        Every problem has a solution

                                        RickyR 1 Reply Last reply
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                                        • CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by
                                          #30

                                          Yeah DT's use a cushion ring.

                                          Pretty sure it's because your clutch isn't properly disengaged

                                          Always Originate, Never Pirate!

                                          RickyR 1 Reply Last reply
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