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DT125R FORUM

  1. Home
  2. Technical Zone
  3. Engine
  4. Ypvs

Ypvs

Scheduled Pinned Locked Moved Engine
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  • J Offline
    J Offline
    jonne123
    wrote on last edited by
    #1

    Does the right half of the axle be in somw direction that it can be removed?

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    0
    • CalumC Online
      CalumC Online
      Calum
      wrote on last edited by
      #2

      Typically it'll be gummed up. The various carbon deposits and the heat and cooling cycles won't help neither.

      Also, the valve is of a particular shape, I think it can rotate freely 360 degrees, but ideally you want to make sure it's aligned flush with the exhaust port.

      Always Originate, Never Pirate!

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      0
      • J Offline
        J Offline
        jonne123
        wrote on last edited by
        #3

        So i have aligned the ypvs with drill bit. Should it be flush now?

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        0
        • CalumC Online
          CalumC Online
          Calum
          wrote on last edited by
          #4

          I don't do it that way as I find it hit and miss.

          Personally, take the exhaust off and make it flush with the port.

          Always Originate, Never Pirate!

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          • J Offline
            J Offline
            jonne123
            wrote on last edited by
            #5

            So you align the cables when its flush and then tighten them so no slack?

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            • CalumC Online
              CalumC Online
              Calum
              wrote on last edited by
              #6

              But making sure that the powervalve is in a known state. It's no good aligning the powervalve to the port if it is midway through the cycle. as it'll be off as soon as you do a power cycle.

              Always Originate, Never Pirate!

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              • J Offline
                J Offline
                jonne123
                wrote on last edited by
                #7

                What i have to do to sure that wont happen

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                • CalumC Online
                  CalumC Online
                  Calum
                  wrote on last edited by
                  #8

                  Cycle the ignition system so it does the cleaning cycle.

                  Always Originate, Never Pirate!

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                  • J Offline
                    J Offline
                    jonne123
                    wrote on last edited by
                    #9

                    What do you think which way is better? https://youtu.be/obMy0adby8Y

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                    • CalumC Online
                      CalumC Online
                      Calum
                      wrote on last edited by Calum
                      #10

                      Align flush with the exhaust port.

                      Any step in the exhaust port will disrupt the flow of gases.

                      As I have already said.

                      Always Originate, Never Pirate!

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                      • J Offline
                        J Offline
                        jonne123
                        wrote on last edited by
                        #11

                        I cannot make it flush with cables

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                        • CalumC Online
                          CalumC Online
                          Calum
                          wrote on last edited by
                          #12

                          How odd.

                          Always Originate, Never Pirate!

                          declanD 1 Reply Last reply
                          0
                          • CalumC Calum

                            How odd.

                            declanD Offline
                            declanD Offline
                            declan
                            wrote on last edited by
                            #13

                            @Calum reproduction cables maybe?

                            CalumC 1 Reply Last reply
                            0
                            • declanD declan

                              @Calum reproduction cables maybe?

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

                              @declan I don't know mate, it's hard to say without actually being there to do it myself.

                              Always Originate, Never Pirate!

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                              • DTleeD Offline
                                DTleeD Offline
                                DTlee
                                wrote on last edited by
                                #15

                                Don’t you need to take the cables out and the black plastic part. Dont think you can do it by just adjusting the cables? Once you have the black plastic part out you can turn it by hand I think

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                                • CalumC Online
                                  CalumC Online
                                  Calum
                                  wrote on last edited by Calum
                                  #16

                                  You adjust the YPVS using the cables and threads to adjust it appropriately.

                                  Always Originate, Never Pirate!

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                                  • DTleeD Offline
                                    DTleeD Offline
                                    DTlee
                                    wrote on last edited by
                                    #17

                                    Weird, I couldnt get enough adjustment just using the cables. So I took it apart and turned the power valve by hand so it was flush an put it back together and tightened the cable. Which I’m hoping has working alright. Haven’t got it quite ready to go on the road to test it yet though

                                    CalumC 1 Reply Last reply
                                    0
                                    • DTleeD DTlee

                                      Weird, I couldnt get enough adjustment just using the cables. So I took it apart and turned the power valve by hand so it was flush an put it back together and tightened the cable. Which I’m hoping has working alright. Haven’t got it quite ready to go on the road to test it yet though

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

                                      @DTlee But that doesn't make sense? How could the cables reach otherwise?

                                      Always Originate, Never Pirate!

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                                      • DTleeD Offline
                                        DTleeD Offline
                                        DTlee
                                        wrote on last edited by
                                        #19

                                        I had to flip the power valve 180 degrees, it’s not that the cables wouldn't reach but the adjustment on the screws wasn't enough to do it. Unless I majorly over complicated it for no reason?

                                        declanD 1 Reply Last reply
                                        0
                                        • DTleeD DTlee

                                          I had to flip the power valve 180 degrees, it’s not that the cables wouldn't reach but the adjustment on the screws wasn't enough to do it. Unless I majorly over complicated it for no reason?

                                          declanD Offline
                                          declanD Offline
                                          declan
                                          wrote on last edited by
                                          #20

                                          @DTlee yeah they doesn't make sense to me it should adjust with the cables no problem with plenty thread to spare sure your pv was in correctly?

                                          DTleeD 1 Reply Last reply
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