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DT125R FORUM

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  4. Power valve

Power valve

Scheduled Pinned Locked Moved Engine
31 Posts 11 Posters 9.0k Views
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  • F Offline
    F Offline
    finnerz89
    wrote on last edited by
    #2

    No difference in peak power, but using the servo you'll get a broader range, so you'll have better low and mid range. Obviously it depends on exactly where you've pinned your power valve

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

    Previous:
    DR650RSE '96
    FJ1200 '92

    1 Reply Last reply
    2
    • V Offline
      V Offline
      vtrn_raptor
      wrote on last edited by
      #3

      I have no idea as it was like it when I got the bike but the servo is still their and all the cable connections to the power valve are attached but the servo is unplugged

      1 Reply Last reply
      0
      • F Offline
        F Offline
        finnerz89
        wrote on last edited by
        #4

        Mine was pinned when i bought the bike, reinstating the servo etc made a huge difference for me

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

        Previous:
        DR650RSE '96
        FJ1200 '92

        ijohney123I 1 Reply Last reply
        0
        • CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #5

          Pinned all the way. You gain everything and lose nothing.

          Unless your CDI is restricted, that'll cause the valve to shut after a certain RPM.

          Zeeltronic gives you complete control of when the valve opens and shuts, allowing you to really get the full potential of the YPVS. Big gains to be made with a custom ignition.

          Always Originate, Never Pirate!

          1 Reply Last reply
          0
          • V Offline
            V Offline
            vtrn_raptor
            wrote on last edited by
            #6

            So keeping it pinned is better

            CalumC 1 Reply Last reply
            0
            • D Offline
              D Offline
              dan28
              wrote on last edited by
              #7

              I would try it with the servo when it's pinned there is no power at low revs
              Perhaps it's unplugged for a reason I would take the pv out an clean it toke sure it's not sticking then connect the servo up an try it

              1 Reply Last reply
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              • V vtrn_raptor

                So keeping it pinned is better

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #8

                @vtrn_raptor Jeez I really messed that up. Sorry no, Servo all the way.

                Don't pin use the servo. I don't know why I said pinned sorry.

                Servo is much better.

                Always Originate, Never Pirate!

                1 Reply Last reply
                2
                • J Offline
                  J Offline
                  Jens Eskildsen
                  wrote on last edited by
                  #9

                  Servo for sure, best of both worlds.

                  1 Reply Last reply
                  1
                  • V Offline
                    V Offline
                    vtrn_raptor
                    wrote on last edited by
                    #10

                    I would but I have no idea how it's been pinned took off the cover on the left side and all the cables to the pulley are still connected so I'm really confused lol

                    MightymanM 1 Reply Last reply
                    0
                    • V vtrn_raptor

                      I would but I have no idea how it's been pinned took off the cover on the left side and all the cables to the pulley are still connected so I'm really confused lol

                      MightymanM Offline
                      MightymanM Offline
                      Mightyman
                      wrote on last edited by
                      #11

                      @vtrn_raptor can you hear it trying to do it's cycle when you turn your bikes ignition on?

                      TDR 125 - 2001

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                      0
                      • V Offline
                        V Offline
                        vtrn_raptor
                        wrote on last edited by
                        #12

                        Not sure I'll check when I'll plug it all in and check when I'm home

                        1 Reply Last reply
                        0
                        • CallumJ94C Offline
                          CallumJ94C Offline
                          CallumJ94
                          wrote on last edited by
                          #13

                          Sorry to butt in the thread, but has anyone got any idea why... when I connected up a working servo to the plugs it was completely dead? No cleaning cycle whatsoever, cables not connected so no load on it. Just not working at all. What's the most likely causes? Could it be a CDI issue? (03 DTR) I want to put a servo on desperately. Cheers.

                          1 Reply Last reply
                          0
                          • CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by
                            #14

                            Yeah motor can be dead, or faulty cdi.

                            Multi meter on the plugs will tell you.

                            Always Originate, Never Pirate!

                            1 Reply Last reply
                            0
                            • F finnerz89

                              Mine was pinned when i bought the bike, reinstating the servo etc made a huge difference for me

                              ijohney123I Offline
                              ijohney123I Offline
                              ijohney123
                              wrote on last edited by
                              #15

                              @finnerz89 how did you manage to wire servo up pal

                              F 1 Reply Last reply
                              0
                              • ZrakoZ Offline
                                ZrakoZ Offline
                                Zrako
                                wrote on last edited by
                                #16

                                Or overtightened servo tensioners . I was setting them on and if they are not set properly , the servo will not reset when ignition turned on

                                1979 Jawa Mustang 50
                                2003 Gilera DNA 125 R.I.P
                                2015 Keeway TX 125 SM
                                2006 Yamaha DT 125 X

                                ijohney123I 1 Reply Last reply
                                0
                                • ZrakoZ Zrako

                                  Or overtightened servo tensioners . I was setting them on and if they are not set properly , the servo will not reset when ignition turned on

                                  ijohney123I Offline
                                  ijohney123I Offline
                                  ijohney123
                                  wrote on last edited by
                                  #17

                                  @Zrako have you not had to rewire servo ?

                                  1 Reply Last reply
                                  0
                                  • ijohney123I ijohney123

                                    @finnerz89 how did you manage to wire servo up pal

                                    F Offline
                                    F Offline
                                    finnerz89
                                    wrote on last edited by
                                    #18

                                    @ijohney123 just plug and play mate. My servo was unplugged with the cables overtightened so the pulley didn't move

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

                                    Previous:
                                    DR650RSE '96
                                    FJ1200 '92

                                    1 Reply Last reply
                                    0
                                    • ZrakoZ Offline
                                      ZrakoZ Offline
                                      Zrako
                                      wrote on last edited by
                                      #19

                                      No , I had a good conectors on bike so when Im rebuilt it was just plug out - plug in . Try to loose the tensioners a bit . There is a "how to" in haynes manual 0_1492858857458_14928588372441878779145.jpg

                                      1979 Jawa Mustang 50
                                      2003 Gilera DNA 125 R.I.P
                                      2015 Keeway TX 125 SM
                                      2006 Yamaha DT 125 X

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                                      0
                                      • V Offline
                                        V Offline
                                        vtrn_raptor
                                        wrote on last edited by
                                        #20

                                        Well I've took the servo and everything off made sure wasn't over tight then plugged back it but does the cleaning cycle really fast and doesn't move at all with the bike on any ideas

                                        F 1 Reply Last reply
                                        0
                                        • V vtrn_raptor

                                          Well I've took the servo and everything off made sure wasn't over tight then plugged back it but does the cleaning cycle really fast and doesn't move at all with the bike on any ideas

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

                                          @vtrn_raptor it won't move until you start to rev the bike mate. I think it starts to open up around 6000rpm

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

                                          Previous:
                                          DR650RSE '96
                                          FJ1200 '92

                                          1 Reply Last reply
                                          0
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