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XR70 Frame Repair/Modification

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  • XR70 Frame Repair/Modification

    I had an XR70 sitting around that had a damaged frame where the swingarm pivot bolt goes through the frame, the poor old bike had been poorly maintained and the swingarm looked like it had been loose and flogging around for a while:
    DSC06661 S.jpg


    - The frame was hammered over like an old chisel but the damage was soon removed with a grinder:
    DSC05480 S.jpg


    - Easy to turn up a repair part on the lathe, please note not to scale I made changes on the run:
    DSC05487 S.jpg


    - Cleaned the weld up flush to the frame ready for the replacement section:
    DSC05492 S.jpg


    - Turned up the replacement part from a small bit of scrap:
    DSC05495 S.jpg


    - Fits well and will do a much better job than the stock setup, also made up one for the other side:
    DSC05500 S.jpg


    - Would be easy to make them the correct width to suit an XR75/80 swingarm on a Z50 frame:
    DSC05503 S.jpg


    Just need to cut off and clean up the other side and weld them on.
    Classic Honda 50's Australia - Visit our online store at - www.classichonda50saustralia.com.au

    PERFORMANCE, REPRODUCTION AND OEM PARTS TO SUIT OLD AND NEW HONDA AND OTHER 4 STROKE MINIBIKES AND MOTORBIKES INCLUDING KAWASAKI, YAMAHA AND SUZUKI.

    Parts to Suit: Honda Z50A, Z50J1, Z50JZ, Z50R, Z50JDM, Z50M, QA50, QR50, MR50, XR50, CRF50, ATC70, CT70, CZ100, MSX125 (Grom), ST70, SL70, XL70, TRX70, XR75, XR80, TRX90, Kawasaki KLX110 and Z125 models to name a few.

  • #2
    I can only see the first pic Jamie, would love to see your work on this one, I have a J1 to do with same damage....

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    • #3
      Thanks for letting me know as I could see all of the pictures when logged in, the pictures should now all be visible as I had not uploaded them correctly, still learning how to use the new forum software
      Classic Honda 50's Australia - Visit our online store at - www.classichonda50saustralia.com.au

      PERFORMANCE, REPRODUCTION AND OEM PARTS TO SUIT OLD AND NEW HONDA AND OTHER 4 STROKE MINIBIKES AND MOTORBIKES INCLUDING KAWASAKI, YAMAHA AND SUZUKI.

      Parts to Suit: Honda Z50A, Z50J1, Z50JZ, Z50R, Z50JDM, Z50M, QA50, QR50, MR50, XR50, CRF50, ATC70, CT70, CZ100, MSX125 (Grom), ST70, SL70, XL70, TRX70, XR75, XR80, TRX90, Kawasaki KLX110 and Z125 models to name a few.

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      • #4
        Cheers all good now. Nice job.

        Comment


        • #5
          Thatís an excellent replacement.

          Comment


          • #6
            Killer fab work jamie
            whats the rectangle box that clips on to the air cleaner
            same as the crf 50
            Remember fellas, "its easier to ask for forgiveness than permission"

            Comment


            • #7
              Same set-up as the CRF50.
              Classic Honda 50's Australia - Visit our online store at - www.classichonda50saustralia.com.au

              PERFORMANCE, REPRODUCTION AND OEM PARTS TO SUIT OLD AND NEW HONDA AND OTHER 4 STROKE MINIBIKES AND MOTORBIKES INCLUDING KAWASAKI, YAMAHA AND SUZUKI.

              Parts to Suit: Honda Z50A, Z50J1, Z50JZ, Z50R, Z50JDM, Z50M, QA50, QR50, MR50, XR50, CRF50, ATC70, CT70, CZ100, MSX125 (Grom), ST70, SL70, XL70, TRX70, XR75, XR80, TRX90, Kawasaki KLX110 and Z125 models to name a few.

              Comment


              • #8
                Whats the rectangle box do jamie
                Remember fellas, "its easier to ask for forgiveness than permission"

                Comment


                • #9
                  The engine breather hose goes into the plastic rectangular box and then into the air filer housing, I thought that it was just a pollution control measure to burn off the engine case fumes.
                  Classic Honda 50's Australia - Visit our online store at - www.classichonda50saustralia.com.au

                  PERFORMANCE, REPRODUCTION AND OEM PARTS TO SUIT OLD AND NEW HONDA AND OTHER 4 STROKE MINIBIKES AND MOTORBIKES INCLUDING KAWASAKI, YAMAHA AND SUZUKI.

                  Parts to Suit: Honda Z50A, Z50J1, Z50JZ, Z50R, Z50JDM, Z50M, QA50, QR50, MR50, XR50, CRF50, ATC70, CT70, CZ100, MSX125 (Grom), ST70, SL70, XL70, TRX70, XR75, XR80, TRX90, Kawasaki KLX110 and Z125 models to name a few.

                  Comment

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