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DT125R FORUM

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Rear wheel

Scheduled Pinned Locked Moved Wheels
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  • J Offline
    J Offline
    jonne123
    wrote on last edited by
    #13

    Ok Do these fit dtr the seller said they are maybe aprilia rs 125 rims
    what modifications maybe excel rims because of red text

    IMG_0271.JPG

    IMG_0270.JPG

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    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #14

      They look like 2005-2005 RS 125 Rims.

      They do not fit without modification.

      Different brakes, different swingarm different forks. All needs modifying.

      Always Originate, Never Pirate!

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      • J Offline
        J Offline
        jonne123
        wrote on last edited by jonne123
        #15

        Different forks? Swingarm? What can you recommend and most cheaply?

        CalumC 1 Reply Last reply
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        • J jonne123

          Different forks? Swingarm? What can you recommend and most cheaply?

          CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #16

          @jonne123 Yeah you know, the Aprilia has completely different geometry to the DTR. So it's going to need fabrication.

          The front and rear wheel need to be aligned. The front and rear sprockets need to align. The wheels need to be centralised. Cause it's from a completely different machine.

          Always Originate, Never Pirate!

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          • J Offline
            J Offline
            jonne123
            wrote on last edited by
            #17

            maybe spacers like the has my uncles friend is machinist

            CalumC 1 Reply Last reply
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            • CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #18

              If money is a concern, stick with what you got and put some decent tyres on it.

              Even Excel rims are expensive and require work. So there is no one easy solution.

              The easiest way to do it would be to buy some nice and expensive Excel rims, and lace up your hubs to them That way you retain the original brakes and spacers and geometry with SM Rims.

              The DTX solution, you need forks, brakes and wheels. These were hard to come by new, now it's practically a nightmare.

              Always Originate, Never Pirate!

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              • J jonne123

                maybe spacers like the has my uncles friend is machinist

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by Calum
                #19

                @jonne123 If you don't mind fabricating parts, then you'll need spacers and the hub carriers modified to take the bigger brakes. and a bracket made to mount the brakes to the wheels.

                Can see the work required in my DTRE build thread as I run RS125 wheels on my DTR.

                alt text

                Always Originate, Never Pirate!

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                • J Offline
                  J Offline
                  jonne123
                  wrote on last edited by
                  #20

                  I know i need brake caliper upradge nad change just brake leg on right. on rear put the wheel backwars

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                  • J Offline
                    J Offline
                    jonne123
                    wrote on last edited by
                    #21

                    can you link the thread

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                    • CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by
                      #22

                      No, you need to centralise the wheels, rotate the tyres and also line up the front and rear sprockets. Otherwise you'll chew through rear sprocket carrier bearings in no time at all!

                      Always Originate, Never Pirate!

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                      • CalumC Offline
                        CalumC Offline
                        Calum
                        wrote on last edited by
                        #23

                        https://dt125r.co.uk/topic/15/the-leviathan-project/127

                        Always Originate, Never Pirate!

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                        • J Offline
                          J Offline
                          jonne123
                          wrote on last edited by jonne123
                          #24

                          but the axle radious is the same? can i keep front brake caliper at left side?

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                          • J Offline
                            J Offline
                            jonne123
                            wrote on last edited by
                            #25

                            does stock rs hub carries fit?

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                            • CalumC Offline
                              CalumC Offline
                              Calum
                              wrote on last edited by
                              #26

                              No nothing fits, it all has to be fabricated. Even the spindles are different sizes.

                              The front spindle is too small. Rear spindle was okay.

                              Always Originate, Never Pirate!

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                              • CalumC Offline
                                CalumC Offline
                                Calum
                                wrote on last edited by Calum
                                #27

                                If you have access to a machinist, the cost is minimal. But it all adds up. Hours on the lathe and precise measurements were necessary to get all the stars to align. I had to shim the rear sprocket to get it to fall inline with the front.

                                When I took the bike in to have the tyres replaced. They omitted the shims and the rear sprocket carrier bearing collapsed shortly after. So it does have to be on point.

                                Always Originate, Never Pirate!

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                                • J Offline
                                  J Offline
                                  jonne123
                                  wrote on last edited by jonne123
                                  #28

                                  And in summer i go to machine shop for summerwork so i can make them afterwork.

                                  And are the rims same size if you can give some measurements of the parts?

                                  How about the speedo?

                                  Does the ride quality increase

                                  declanD 1 Reply Last reply
                                  0
                                  • J jonne123

                                    And in summer i go to machine shop for summerwork so i can make them afterwork.

                                    And are the rims same size if you can give some measurements of the parts?

                                    How about the speedo?

                                    Does the ride quality increase

                                    declanD Offline
                                    declanD Offline
                                    declan
                                    wrote on last edited by
                                    #29

                                    @jonne123 WR 125 wheels fit

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                                    • J Offline
                                      J Offline
                                      jonne123
                                      wrote on last edited by jonne123
                                      #30

                                      But could buy those for 20€

                                      So 20€ for skf wheel bearings

                                      • front brake disc

                                      -Rear sprocket

                                      -speedometer drive

                                      • front caliper

                                      -fabrication metal

                                      So i would image around

                                      200€

                                      So not that bad

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                                      • declanD Offline
                                        declanD Offline
                                        declan
                                        wrote on last edited by
                                        #31

                                        it very rarely is as easy as you expect but i suppose if you follow callums build thread in relation to your wheels you will be okay

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                                        • J Offline
                                          J Offline
                                          jonne123
                                          wrote on last edited by
                                          #32

                                          I plan to do this as simple as possible.

                                          Rear:

                                          Sprockets and 520 chain

                                          Spacers

                                          Front:

                                          Spacers

                                          Speedo drive

                                          Front axle

                                          Brake upradge

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