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DT125R FORUM

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  4. Headstock bearings question

Headstock bearings question

Scheduled Pinned Locked Moved Framework
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  • declanD Offline
    declanD Offline
    declan
    wrote on last edited by
    #1

    So I just looked at my headstock bearing they’re in perfect condition look new but the top ball bearings there was a ball sized gap Is that normal or am I missing one? Next question the lower bearing cup is not a pressed fit like my husky is it supposed to press into the frame when the assembly is tightened down?

    declanD 1 Reply Last reply
    0
    • declanD declan

      So I just looked at my headstock bearing they’re in perfect condition look new but the top ball bearings there was a ball sized gap Is that normal or am I missing one? Next question the lower bearing cup is not a pressed fit like my husky is it supposed to press into the frame when the assembly is tightened down?

      declanD Offline
      declanD Offline
      declan
      wrote on last edited by
      #2

      Consulted my Haynes and I’m happy that the ball bearings require that gap, as for the cup it states it’s an interference fit I’m not sure if that’s the same as a press fit

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      • CalumC Online
        CalumC Online
        Calum
        wrote on last edited by
        #3

        The bottome yoke has a taper roller bearing. The cup is interference fit into the frame, the roller bearings are interference fit onto the stem. The two tighten together. Be sure not to over tighten the triple clamps.

        Always Originate, Never Pirate!

        declanD 1 Reply Last reply
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        • CalumC Calum

          The bottome yoke has a taper roller bearing. The cup is interference fit into the frame, the roller bearings are interference fit onto the stem. The two tighten together. Be sure not to over tighten the triple clamps.

          declanD Offline
          declanD Offline
          declan
          wrote on last edited by
          #4

          @Calum I gotcha, but the cup moves if you touch it that said the cups new all the bearings are new there’s no play at all abs it’s smooth as butter I call this one good

          CalumC 1 Reply Last reply
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          • declanD declan

            @Calum I gotcha, but the cup moves if you touch it that said the cups new all the bearings are new there’s no play at all abs it’s smooth as butter I call this one good

            CalumC Online
            CalumC Online
            Calum
            wrote on last edited by
            #5

            @declan The race? No that should not move!

            Always Originate, Never Pirate!

            declanD 1 Reply Last reply
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            • CalumC Calum

              @declan The race? No that should not move!

              declanD Offline
              declanD Offline
              declan
              wrote on last edited by
              #6

              @Calum yeah the race bud I’m leaving it for another day

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              • O Offline
                O Offline
                oldman
                wrote on last edited by
                #7

                Mine have all been hard to remove and secure when fitted, have you measured it against a known original. Will promote wear in frame seat if allowed to move even slightly

                declanD 1 Reply Last reply
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                • O oldman

                  Mine have all been hard to remove and secure when fitted, have you measured it against a known original. Will promote wear in frame seat if allowed to move even slightly

                  declanD Offline
                  declanD Offline
                  declan
                  wrote on last edited by
                  #8

                  @oldman I haven’t changed them they were already in the bike but they’re like new

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                  • O Offline
                    O Offline
                    oldman
                    wrote on last edited by
                    #9

                    But are they the correct size was my point, worth checking?

                    declanD 1 Reply Last reply
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                    • O oldman

                      But are they the correct size was my point, worth checking?

                      declanD Offline
                      declanD Offline
                      declan
                      wrote on last edited by
                      #10

                      @oldman it’s hard to say it looks like they were all changed together unless someone damaged one and had another lying around

                      NINJAN 1 Reply Last reply
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                      • declanD declan

                        @oldman it’s hard to say it looks like they were all changed together unless someone damaged one and had another lying around

                        NINJAN Offline
                        NINJAN Offline
                        NINJA
                        wrote on last edited by
                        #11

                        @declan How much is a new set? If in doubt it would be wise to replace them, if nothing more than just for peace_of_mind!!! 😉

                        SEDUCED BY THE DARK SIDE!!!

                        declanD 1 Reply Last reply
                        0
                        • NINJAN NINJA

                          @declan How much is a new set? If in doubt it would be wise to replace them, if nothing more than just for peace_of_mind!!! 😉

                          declanD Offline
                          declanD Offline
                          declan
                          wrote on last edited by declan
                          #12

                          @NINJA only 20 pound but a bit of a ball ache to install when I have the money I’ll buy a set and just swap the bearing race out probably after it’s built up and finished though

                          NINJAN 1 Reply Last reply
                          1
                          • declanD declan

                            @NINJA only 20 pound but a bit of a ball ache to install when I have the money I’ll buy a set and just swap the bearing race out probably after it’s built up and finished though

                            NINJAN Offline
                            NINJAN Offline
                            NINJA
                            wrote on last edited by
                            #13

                            @declan It would save you a lot of trouble in the long run and be a wise investment in your bike for-sure!!! :winking_face: :grinning_face_with_smiling_eyes: :winking_face: :face_with_stuck-out_tongue_winking_eye:

                            SEDUCED BY THE DARK SIDE!!!

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