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DT125R FORUM

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  3. Pv adjustment help

Pv adjustment help

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  • CalumC Calum

    @spanners Sounds like either the chain, or the clutch is slipping.

    I had a mate with a 2001 DTR said the same thing to me, didn't realise the chain was spinning on the front cog believe it or not. I took it for one spin up the road and was like F me mate that is deadly. If it slips and coils up Bye Bye engine as the chain smashes the crank case together.

    If you've put Castrol Magnetec oil in the gearbox, the clutch will slip.

    SpannersS Offline
    SpannersS Offline
    Spanners
    wrote on last edited by
    #16

    @calum
    Thank you again for all your help!
    The clutch plates changed when l had the water coming in the gearbox from the water pump seal, could be a bedding in issue?
    Both sprockets and chain brand new, changed as a full kit.
    Oil in gearbox is Rock oil lite, bought from Wemoto, someone suggested on a forum and definitely not magnatec!

    1 Reply Last reply
    0
    • F finnerz89

      @Spanners Are you sure your clutch isn't just slipping?

      SpannersS Offline
      SpannersS Offline
      Spanners
      wrote on last edited by
      #17

      @finnerz89
      I can’t be fully confident, but are brand new clutch plates.
      Could it be a bedding in issue?

      CalumC declanD 2 Replies Last reply
      0
      • SpannersS Spanners

        @finnerz89
        I can’t be fully confident, but are brand new clutch plates.
        Could it be a bedding in issue?

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

        @spanners Did you soak the clutch plates in oil 24 hours prior to installing?

        Always Originate, Never Pirate!

        SpannersS 1 Reply Last reply
        0
        • SpannersS Spanners

          @finnerz89
          I can’t be fully confident, but are brand new clutch plates.
          Could it be a bedding in issue?

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

          @spanners are you sure your pv is set up mine was like a rev limiter on and off power around 6.5k

          1 Reply Last reply
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          • CalumC Calum

            @spanners Did you soak the clutch plates in oil 24 hours prior to installing?

            SpannersS Offline
            SpannersS Offline
            Spanners
            wrote on last edited by
            #20

            @calum
            We cover the clutch plates in the gearbox oil before installing them.
            It was in accordance with the Haynes manual.
            Should they have been soaked 24 hours?
            If so, what are the implications of not doing this?
            Have they not been soaking in the gearbox oil since installation?
            How do l stop the clutch slipping from now or when it wears will it natural gather more grip when the high spots wear?
            If not I’ve got a dangerous reving rocket! Ho-ho!

            F declanD 2 Replies Last reply
            0
            • SpannersS Spanners

              @calum
              We cover the clutch plates in the gearbox oil before installing them.
              It was in accordance with the Haynes manual.
              Should they have been soaked 24 hours?
              If so, what are the implications of not doing this?
              Have they not been soaking in the gearbox oil since installation?
              How do l stop the clutch slipping from now or when it wears will it natural gather more grip when the high spots wear?
              If not I’ve got a dangerous reving rocket! Ho-ho!

              F Offline
              F Offline
              finnerz89
              wrote on last edited by
              #21

              @spanners have you adjusted the lever properly as per the manual? Could just be that it's set up wrong

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

              Previous:
              DR650RSE '96
              FJ1200 '92

              SpannersS 1 Reply Last reply
              0
              • SpannersS Spanners

                @calum
                We cover the clutch plates in the gearbox oil before installing them.
                It was in accordance with the Haynes manual.
                Should they have been soaked 24 hours?
                If so, what are the implications of not doing this?
                Have they not been soaking in the gearbox oil since installation?
                How do l stop the clutch slipping from now or when it wears will it natural gather more grip when the high spots wear?
                If not I’ve got a dangerous reving rocket! Ho-ho!

                declanD Offline
                declanD Offline
                declan
                wrote on last edited by
                #22

                @spanners no it must be 24 hrs the implications are you will burn up your friction material they won’t soak as the oil goes to the sump and does not sit in the clutch cover

                SpannersS 1 Reply Last reply
                0
                • declanD declan

                  @spanners no it must be 24 hrs the implications are you will burn up your friction material they won’t soak as the oil goes to the sump and does not sit in the clutch cover

                  SpannersS Offline
                  SpannersS Offline
                  Spanners
                  wrote on last edited by
                  #23

                  @declan
                  Oh bugger!

                  1 Reply Last reply
                  0
                  • F finnerz89

                    @spanners have you adjusted the lever properly as per the manual? Could just be that it's set up wrong

                    SpannersS Offline
                    SpannersS Offline
                    Spanners
                    wrote on last edited by
                    #24

                    @finnerz89
                    The bike apparently had a top end rebuild before l got it so l have not messed with anything to do with that. I will have a read and investigate tomorrow.
                    Thank you for your help!

                    F 1 Reply Last reply
                    0
                    • SpannersS Spanners

                      @finnerz89
                      The bike apparently had a top end rebuild before l got it so l have not messed with anything to do with that. I will have a read and investigate tomorrow.
                      Thank you for your help!

                      F Offline
                      F Offline
                      finnerz89
                      wrote on last edited by
                      #25

                      @spanners you should have about 3mm of free play at the lever as a rough figure

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

                      Previous:
                      DR650RSE '96
                      FJ1200 '92

                      1 Reply Last reply
                      0
                      • CalumC Offline
                        CalumC Offline
                        Calum
                        wrote on last edited by
                        #26

                        Could be the clutch springs not torqued up properly.

                        Always Originate, Never Pirate!

                        SpannersS 1 Reply Last reply
                        0
                        • CalumC Calum

                          Could be the clutch springs not torqued up properly.

                          SpannersS Offline
                          SpannersS Offline
                          Spanners
                          wrote on last edited by
                          #27

                          @calum
                          I bought a full clutch kit we replaced everything.
                          All springs are new and we adjusted it to the best of our knowledge and skill.
                          Maybe the problem was with the repairers! Ha-ha!
                          Clutch seems pretty solid apart from the power valve, you would have thought if it was slipping, it would do it through all the gears?
                          I’ll get it up to full speed in 5th to see if it slips, then back to the old drawing board...... 😪

                          F 1 Reply Last reply
                          0
                          • O Offline
                            O Offline
                            oldman
                            wrote on last edited by
                            #28

                            It's frustrating innit! Just as you think the end is near something else crops up! Good luck and hope you find the problem quickly,

                            1 Reply Last reply
                            0
                            • SpannersS Spanners

                              @calum
                              I bought a full clutch kit we replaced everything.
                              All springs are new and we adjusted it to the best of our knowledge and skill.
                              Maybe the problem was with the repairers! Ha-ha!
                              Clutch seems pretty solid apart from the power valve, you would have thought if it was slipping, it would do it through all the gears?
                              I’ll get it up to full speed in 5th to see if it slips, then back to the old drawing board...... 😪

                              F Offline
                              F Offline
                              finnerz89
                              wrote on last edited by
                              #29

                              @spanners it's more likely to do it in the higher gears.
                              I'd follow the Haynes manual procedure for setting up the clutch, then worry about the power valve after.

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

                              Previous:
                              DR650RSE '96
                              FJ1200 '92

                              CalumC 1 Reply Last reply
                              0
                              • F finnerz89

                                @spanners it's more likely to do it in the higher gears.
                                I'd follow the Haynes manual procedure for setting up the clutch, then worry about the power valve after.

                                CalumC Offline
                                CalumC Offline
                                Calum
                                wrote on last edited by
                                #30

                                @finnerz89 It's more likely to do it under load in the lower gears, where the ratios are smaller and you're trying to accelerate. I would have thought.

                                Always Originate, Never Pirate!

                                declanD F 2 Replies Last reply
                                0
                                • CalumC Calum

                                  @finnerz89 It's more likely to do it under load in the lower gears, where the ratios are smaller and you're trying to accelerate. I would have thought.

                                  declanD Offline
                                  declanD Offline
                                  declan
                                  wrote on last edited by
                                  #31

                                  @calum yeah I would agree with that after all it’s where the most torque is

                                  1 Reply Last reply
                                  0
                                  • CalumC Calum

                                    @finnerz89 It's more likely to do it under load in the lower gears, where the ratios are smaller and you're trying to accelerate. I would have thought.

                                    F Offline
                                    F Offline
                                    finnerz89
                                    wrote on last edited by
                                    #32

                                    @calum in my experience it does it in higher gears when you're accelerating. At least that's what it did on my 650 and 1200

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

                                    Previous:
                                    DR650RSE '96
                                    FJ1200 '92

                                    CalumC 1 Reply Last reply
                                    0
                                    • F finnerz89

                                      @calum in my experience it does it in higher gears when you're accelerating. At least that's what it did on my 650 and 1200

                                      CalumC Offline
                                      CalumC Offline
                                      Calum
                                      wrote on last edited by
                                      #33

                                      @finnerz89 It'll slip under load. So in the higher gears I guess you will be exerting more load onto the gearbox,

                                      Always Originate, Never Pirate!

                                      F 1 Reply Last reply
                                      0
                                      • CalumC Calum

                                        @finnerz89 It'll slip under load. So in the higher gears I guess you will be exerting more load onto the gearbox,

                                        F Offline
                                        F Offline
                                        finnerz89
                                        wrote on last edited by
                                        #34

                                        @calum yeah. The way I've always checked to see if a clutch is slipping is roll off the throttle in fifth or top, then snap the throttle back open. If it's going to slip then that's when it'll do it.
                                        With a 2 stroke it's obviously a bit different, hitting the powerband would replicate that though I guess.
                                        Much higher load on the engine in the higher gears

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

                                        Previous:
                                        DR650RSE '96
                                        FJ1200 '92

                                        1 Reply Last reply
                                        1
                                        • J Offline
                                          J Offline
                                          Jens Eskildsen
                                          wrote on last edited by
                                          #35

                                          I have never soaked clutchplates for 24, nor seen anyone do it.
                                          Just assemle with a coat of oil will do the trick.

                                          And yes, clutches are more prone to slip in higher gear, because the load on it is way higher.

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