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DT125R FORUM

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  4. Engine bogging in 6th gear??

Engine bogging in 6th gear??

Scheduled Pinned Locked Moved Engine
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  • L Offline
    L Offline
    Lewisf5755
    wrote on last edited by
    #1

    Hi I'm new to this site and have just got myself a 2001 dt125r the bike is in great condition and I'm really enjoying it so far. I have a slight problem the bike has been fully de restricted, the power valve is set up properly and working a treat. I can see under the clocks the cables have been cut and joined and it has had a full dep exhaust put on. It goes through the gears lovely up to 5th (doing about 100kmp) as soon as I put it into 6th the engine sounds as if it gets deeper and bogging. The bike then starts to loose power and speed as soon as I go back to 5th it's perfect again. Can anybody help me on this as I'm really stuck?

    Many thanks
    Lewis

    DartyD 1 Reply Last reply
    0
    • L Lewisf5755

      Hi I'm new to this site and have just got myself a 2001 dt125r the bike is in great condition and I'm really enjoying it so far. I have a slight problem the bike has been fully de restricted, the power valve is set up properly and working a treat. I can see under the clocks the cables have been cut and joined and it has had a full dep exhaust put on. It goes through the gears lovely up to 5th (doing about 100kmp) as soon as I put it into 6th the engine sounds as if it gets deeper and bogging. The bike then starts to loose power and speed as soon as I go back to 5th it's perfect again. Can anybody help me on this as I'm really stuck?

      Many thanks
      Lewis

      DartyD Offline
      DartyD Offline
      Darty
      wrote on last edited by
      #2

      @Lewisf5755 Yo yo welcome.

      Might be your sprocket sizes first, sounds very similar to my old setup. Had a small sprocket on the front which really limits the available torque into 6th on anything but a long flat road.

      Keep it real

      1 Reply Last reply
      1
      • L Offline
        L Offline
        Lewisf5755
        wrote on last edited by
        #3

        What sprockets did you have? Do you know what ones I would need? Thanks

        DartyD 1 Reply Last reply
        0
        • L Lewisf5755

          What sprockets did you have? Do you know what ones I would need? Thanks

          DartyD Offline
          DartyD Offline
          Darty
          wrote on last edited by
          #4

          @Lewisf5755 16T Drive sprocket and 57T rear are Original spec. Very good standard gearing, I liked it on the road.

          Keep it real

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

            Thank you Darty! That would have been my first point of call!

            Always Originate, Never Pirate!

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