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DT125R FORUM

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  4. Dtx Project Codename Moneypit

Dtx Project Codename Moneypit

Scheduled Pinned Locked Moved DTX
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  • ZrakoZ Offline
    ZrakoZ Offline
    Zrako
    wrote on last edited by
    #16

    0_1490221123100_20170322_201604.jpg

    The yz swingarm arrived today . Postman asked me why I am so happy lol.
    Ehm. The fitment makes me a bit nervous there. Any ideas ?

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

    1 Reply Last reply
    1
    • G Offline
      G Offline
      gareth_iowc
      wrote on last edited by
      #17

      Yz one is not wide enough. Tried this myself 2 weeks ago and gave up on that idea

      DT125R 2000
      DRZ400 2006
      Golf Mk3 20v Turbo 1996

      ZrakoZ 1 Reply Last reply
      0
      • G gareth_iowc

        Yz one is not wide enough. Tried this myself 2 weeks ago and gave up on that idea

        ZrakoZ Offline
        ZrakoZ Offline
        Zrako
        wrote on last edited by Mightyman
        #18

        @chalkey46 Sir I need your help ☺
        @gareth_iowc !

        YZ Swingarm

        This Sir did the job mate .

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

        1 Reply Last reply
        0
        • CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #19

          Anything is possible. No it's not a direct fit, but if it were then every joey would have done it.

          The only reason I didn't do it, was because I spent many many nights lining up my supermoto wheels with my current setup, changing the arm, whilst trivial, would have undone all that work.

          Always Originate, Never Pirate!

          NINJAN 1 Reply Last reply
          2
          • ZrakoZ Offline
            ZrakoZ Offline
            Zrako
            wrote on last edited by
            #20

            At first Im spotted the 2 problems I need to deal with : 1st - the linkage fitment is different
            2nd - the brake bracket .
            Wondering if the yz bracket will fit my caliper and line up properly with the disc 🤔

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

            1 Reply Last reply
            0
            • CalumC Calum

              Anything is possible. No it's not a direct fit, but if it were then every joey would have done it.

              The only reason I didn't do it, was because I spent many many nights lining up my supermoto wheels with my current setup, changing the arm, whilst trivial, would have undone all that work.

              NINJAN Offline
              NINJAN Offline
              NINJA
              wrote on last edited by
              #21

              @Calum Big respect to all Joey's!!! LOL 😉

              SEDUCED BY THE DARK SIDE!!!

              1 Reply Last reply
              1
              • CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by Calum
                #22

                To do it properly you are going to need to realign the whole geometry of the bike.

                With the new swingarm you are going to need the YZ brake carrier. Which will need modifiying to either accept your brake, or use the YZ brakes.

                Either way the swingarm needs altering to fit between the frame and the engine.

                This will cause the sprocket to be out of alignment with the rear sprocket, which is going to to cause undue stress to the gearbox bearings. This will need correcting by either shimming or machining.

                You are then going to find the front and rear wheels are no longer in line. So this will need altering to ensure that the front and rear wheels are inline, and the front and rear sprockets are inline.

                If you don't then you will find the bike will have a tendency to crab or to cause excessive damage to the gearbox.

                This is why my front wheel is off centre from the forks. This was done to ensure the front and rear wheels line up perfectly, whilst maintaining the correct geometry for the front and rear sprockets.

                I'm all for the swingarm conversion, but it sounds like you haven't thought this through enough?

                If you're going to do, do it right. Is all I'm going to say.

                It's just a case of measuring once, twice three times to be sure. This is the reason why I didn't use the alloy swingarm, AFTER I had already done all of this measuring.

                I should have done it all at one time and saved myself the effort of measuring twice.

                If any of that is unclear I am happy to go into more detail.

                Always Originate, Never Pirate!

                ZrakoZ 1 Reply Last reply
                1
                • CalumC Calum

                  To do it properly you are going to need to realign the whole geometry of the bike.

                  With the new swingarm you are going to need the YZ brake carrier. Which will need modifiying to either accept your brake, or use the YZ brakes.

                  Either way the swingarm needs altering to fit between the frame and the engine.

                  This will cause the sprocket to be out of alignment with the rear sprocket, which is going to to cause undue stress to the gearbox bearings. This will need correcting by either shimming or machining.

                  You are then going to find the front and rear wheels are no longer in line. So this will need altering to ensure that the front and rear wheels are inline, and the front and rear sprockets are inline.

                  If you don't then you will find the bike will have a tendency to crab or to cause excessive damage to the gearbox.

                  This is why my front wheel is off centre from the forks. This was done to ensure the front and rear wheels line up perfectly, whilst maintaining the correct geometry for the front and rear sprockets.

                  I'm all for the swingarm conversion, but it sounds like you haven't thought this through enough?

                  If you're going to do, do it right. Is all I'm going to say.

                  It's just a case of measuring once, twice three times to be sure. This is the reason why I didn't use the alloy swingarm, AFTER I had already done all of this measuring.

                  I should have done it all at one time and saved myself the effort of measuring twice.

                  If any of that is unclear I am happy to go into more detail.

                  ZrakoZ Offline
                  ZrakoZ Offline
                  Zrako
                  wrote on last edited by
                  #23

                  @Calum yeah to be honest Im thought its lot easier than it really is and I havent the yz swingarm in the hand to get the measurements.
                  Definitely I have only 2 ways of doing this: properly or stock swingarm.

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

                  1 Reply Last reply
                  0
                  • G Offline
                    G Offline
                    gareth_iowc
                    wrote on last edited by
                    #24

                    I'm keeping the stock arm and swapping the wheel hubs over just to keep the project going ATM. I did like the idea of the yz wheel adjustment on the rear as it looks smarter than the dt 1

                    DT125R 2000
                    DRZ400 2006
                    Golf Mk3 20v Turbo 1996

                    ZrakoZ 1 Reply Last reply
                    0
                    • G gareth_iowc

                      I'm keeping the stock arm and swapping the wheel hubs over just to keep the project going ATM. I did like the idea of the yz wheel adjustment on the rear as it looks smarter than the dt 1

                      ZrakoZ Offline
                      ZrakoZ Offline
                      Zrako
                      wrote on last edited by
                      #25

                      @gareth_iowc are you on supermoto project as well?

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

                      1 Reply Last reply
                      0
                      • DartyD Offline
                        DartyD Offline
                        Darty
                        wrote on last edited by Mightyman
                        #26

                        Well I have seen quite a few DTRs with YZ250/WR400 swingarms. Doable.

                        Custom linkage brackets, fabricated an welded...

                        Complete YZ/WR rear end,, new chain/ possibly only a 520.

                        A earlier style YZ/WR shock will only just clear the exhaust, and will need a custom spacer just to fit it into frame shock tower!

                        This is a proper fabrication job.

                        This was the very reason a WR200 swingarm was the ONLY choice for me.

                        Keep it real

                        1 Reply Last reply
                        2
                        • G Offline
                          G Offline
                          gareth_iowc
                          wrote on last edited by
                          #27

                          @zrako I'm sticking with off road but I want to use the 19" rear

                          DT125R 2000
                          DRZ400 2006
                          Golf Mk3 20v Turbo 1996

                          1 Reply Last reply
                          1
                          • CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by
                            #28

                            Yeah if you wanted to do minimal fabrication then buy a YZ rear end and shock, this would minimise a lot of stuff.

                            If I had a garage I would happily make these sorts of bits for people. But I am so tight for storage at the moment it simply is not possible!

                            Always Originate, Never Pirate!

                            1 Reply Last reply
                            0
                            • ZrakoZ Offline
                              ZrakoZ Offline
                              Zrako
                              wrote on last edited by
                              #29

                              Guys , desperately searching internet for the complete set of swingarm bearings , pins , thrust washers , bearings . Heeelp please ☺

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

                              CalumC 1 Reply Last reply
                              0
                              • ZrakoZ Zrako

                                Guys , desperately searching internet for the complete set of swingarm bearings , pins , thrust washers , bearings . Heeelp please ☺

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

                                @Zrako just measure them and go to simplybearings

                                Always Originate, Never Pirate!

                                ZrakoZ 1 Reply Last reply
                                0
                                • CalumC Calum

                                  @Zrako just measure them and go to simplybearings

                                  ZrakoZ Offline
                                  ZrakoZ Offline
                                  Zrako
                                  wrote on last edited by
                                  #31

                                  @Calum will do mate . Im thought that Im found one but its for 78-81 model.

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

                                  1 Reply Last reply
                                  0
                                  • CalumC Offline
                                    CalumC Offline
                                    Calum
                                    wrote on last edited by
                                    #32

                                    As said I got all mine off simply bearings no problem. Saved loads of money as well!

                                    Always Originate, Never Pirate!

                                    1 Reply Last reply
                                    1
                                    • ZrakoZ Offline
                                      ZrakoZ Offline
                                      Zrako
                                      wrote on last edited by
                                      #33

                                      Small update . Engine rebuilt and frame finally came back from powdercoating. Not sure if I love the change but have to deal with it now 😂 0_1491671835721_20170407_180013.jpg

                                      0_1491671857471_20170408_173540.jpg

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

                                      CalumC NINJAN 2 Replies Last reply
                                      3
                                      • ZrakoZ Zrako

                                        Small update . Engine rebuilt and frame finally came back from powdercoating. Not sure if I love the change but have to deal with it now 😂 0_1491671835721_20170407_180013.jpg

                                        0_1491671857471_20170408_173540.jpg

                                        CalumC Offline
                                        CalumC Offline
                                        Calum
                                        wrote on last edited by
                                        #34

                                        @Zrako Yes mate that is looking lovely!

                                        Always Originate, Never Pirate!

                                        1 Reply Last reply
                                        0
                                        • ZrakoZ Zrako

                                          Small update . Engine rebuilt and frame finally came back from powdercoating. Not sure if I love the change but have to deal with it now 😂 0_1491671835721_20170407_180013.jpg

                                          0_1491671857471_20170408_173540.jpg

                                          NINJAN Offline
                                          NINJAN Offline
                                          NINJA
                                          wrote on last edited by
                                          #35

                                          @Zrako If it's not as you originally envisaged, most of it will be hidden anyways, so it's all good really!!! 😉

                                          SEDUCED BY THE DARK SIDE!!!

                                          1 Reply Last reply
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