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DT125R FORUM

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  4. So Close!...

So Close!...

Scheduled Pinned Locked Moved DTR
1.1k Posts 26 Posters 237.1k Views
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  • CalumC Calum

    Brakes on my DTR were horrendous.

    Don't have that problem any more, bike stops on a DIME!

    S Offline
    S Offline
    SpookDog
    wrote on last edited by
    #1053

    @Calum

    It’s only my front brake, the rear is the bogs dollox!…

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    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #1054

      @SpookDog It's definitely bled properly?

      Always Originate, Never Pirate!

      S 1 Reply Last reply
      0
      • CalumC Calum

        @SpookDog It's definitely bled properly?

        S Offline
        S Offline
        SpookDog
        wrote on last edited by
        #1055

        @Calum

        I don’t think that it is. There’s no play on the lever, let alone sponginess, but I don’t think it’s getting the full pressure of the system at the pads. I can’t see any other reason…

        47,125 miles today! That’s 34K since I’ve been riding 🙂…

        CalumC 1 Reply Last reply
        2
        • S SpookDog

          @Calum

          I don’t think that it is. There’s no play on the lever, let alone sponginess, but I don’t think it’s getting the full pressure of the system at the pads. I can’t see any other reason…

          47,125 miles today! That’s 34K since I’ve been riding 🙂…

          CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #1056

          @SpookDog Mate, that's a mental amount of riding!

          Always Originate, Never Pirate!

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          • HOTSHOT IIIH HOTSHOT III

            @SpookDog In practice the linkage bearing sleeves often don't wear so if you vernier your originals up and they're still close to 20mm OD you can just get the linkage parts separately. Relay arm bearings:

            https://shop.marksman-ind.com/93315-32052-00-equivalent-yamaha-bearing-29446-p.asp

            Linkage bushes:
            https://simplybearings.co.uk/shop/p142950/MB2020X-Bronze-Backed-Steel-Bush-20x23x20mm/product_info.html

            Seals:
            https://simplybearings.co.uk/shop/p26044/20x27x5mm-Nitrile-Rubber-Rotary-Shaft-Oil-Seal-with-Garter-Spring-R23-/-TC/product_info.html

            Double check all of these dimensions before ordering as it's a while since I did a DTR linkage job but I'm pretty sure these are correct. Just rip the piss out of me if they're not.

            S Offline
            S Offline
            SpookDog
            wrote on last edited by SpookDog
            #1057

            Double check all of these dimensions before ordering as it's a while since I did a DTR linkage job but I'm pretty sure these are correct. Just rip the piss out of me if they're not.

            Is there anyone who knows the sizes of the needle-roller bearings and the phosphor bronze bushes definitely? The only way I can find out is to strip down the linkage first. I don’t want to take the bike off of the road though. Also I’ll probably destroy the bearings and bushes during removal! From what I remember the bearings were loose rollers that I had to stick/pack into place with grease, only the outer ‘cages’ were drift~fitted inside the linkage to frame union. They were very thin gauge metal and easily damaged…

            Ta!…

            PS. Is the 20mm inner or outer?…

            Edit: The inner is 20mm on both bearings and bushes. Are the bearings 23mm outer like the bushes?…

            S 1 Reply Last reply
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            • S SpookDog

              Double check all of these dimensions before ordering as it's a while since I did a DTR linkage job but I'm pretty sure these are correct. Just rip the piss out of me if they're not.

              Is there anyone who knows the sizes of the needle-roller bearings and the phosphor bronze bushes definitely? The only way I can find out is to strip down the linkage first. I don’t want to take the bike off of the road though. Also I’ll probably destroy the bearings and bushes during removal! From what I remember the bearings were loose rollers that I had to stick/pack into place with grease, only the outer ‘cages’ were drift~fitted inside the linkage to frame union. They were very thin gauge metal and easily damaged…

              Ta!…

              PS. Is the 20mm inner or outer?…

              Edit: The inner is 20mm on both bearings and bushes. Are the bearings 23mm outer like the bushes?…

              S Offline
              S Offline
              SpookDog
              wrote on last edited by
              #1058

              Well, I couldn’t confirm the sizes, so I’m hoping that they’re right so I don’t have to Rip t Piss out of Hotshot!! 😜
              I’m just praying that the sleeves are in good enough order (especially the roller bearing one) to match up nicely 🤞 …

              S 1 Reply Last reply
              1
              • S SpookDog

                Well, I couldn’t confirm the sizes, so I’m hoping that they’re right so I don’t have to Rip t Piss out of Hotshot!! 😜
                I’m just praying that the sleeves are in good enough order (especially the roller bearing one) to match up nicely 🤞 …

                S Offline
                S Offline
                SpookDog
                wrote last edited by SpookDog
                #1059

                Stopped riding for about six months cause of old git health problems, only just renewed my CBT again!
                Took me over a year to fit the new bearings and bushes into the rear suspension linkage! Didn’t realise how big of a faff it was going to be to get them pressed in straight and to the depth that’s needed for the seals! Done though. Nice and tight on the ass end! No more ‘snatchy chain’ feel when pulling away 🙂

                Is HotShot still around? I need some info on wheel builders in Dorset. I can’t find the old post recommending a particular one. My back wheel is a bit up and down, as well as being a bit side to side…

                Unless anyone has a decent straight rear wheel for sale?…
                Ta!…

                HOTSHOT IIIH 1 Reply Last reply
                3
                • CalumC Offline
                  CalumC Offline
                  Calum
                  wrote last edited by
                  #1060

                  Oh hey blast from the past!

                  Yeah @HOTSHOT-III is still knocking about.

                  Sorry to hear about your health problems, considering how much you use your DT that's a crying shame.

                  Always Originate, Never Pirate!

                  1 Reply Last reply
                  1
                  • S SpookDog

                    Stopped riding for about six months cause of old git health problems, only just renewed my CBT again!
                    Took me over a year to fit the new bearings and bushes into the rear suspension linkage! Didn’t realise how big of a faff it was going to be to get them pressed in straight and to the depth that’s needed for the seals! Done though. Nice and tight on the ass end! No more ‘snatchy chain’ feel when pulling away 🙂

                    Is HotShot still around? I need some info on wheel builders in Dorset. I can’t find the old post recommending a particular one. My back wheel is a bit up and down, as well as being a bit side to side…

                    Unless anyone has a decent straight rear wheel for sale?…
                    Ta!…

                    HOTSHOT IIIH Offline
                    HOTSHOT IIIH Offline
                    HOTSHOT III
                    wrote last edited by
                    #1061

                    @SpookDog Hey bud, hope you're feeling better. I did wonder what had happened to you.

                    Good to hear you've sorted the rear suspension 👍

                    Try Salisbury Wheel Builders over in Ringwood: https://salisbury-wheel-builders.ueniweb.com/ 01202 081994

                    S 1 Reply Last reply
                    0
                    • HOTSHOT IIIH HOTSHOT III

                      @SpookDog Hey bud, hope you're feeling better. I did wonder what had happened to you.

                      Good to hear you've sorted the rear suspension 👍

                      Try Salisbury Wheel Builders over in Ringwood: https://salisbury-wheel-builders.ueniweb.com/ 01202 081994

                      S Offline
                      S Offline
                      SpookDog
                      wrote last edited by SpookDog
                      #1062

                      alt text

                      Still going well mechanically, just looks like a dog 🐾

                      Cheers for the link bud!…

                      I really need some hubs if anyone knows of any for sale? Back one is way more urgent than the front!

                      Only issue is it seems to be running a bit hot. I removed the plastic cover from the radiator and it was an improvement, but not great. I’m wondering if being stood up and hardly ridden since last winter has let the radiator clog up? The radiator was well hot when I checked it. Like it’s not shedding the heat. The ‘fins’ look clear, so I’m wondering if it’s an internal obstruction?

                      1 Reply Last reply
                      1
                      • CalumC Offline
                        CalumC Offline
                        Calum
                        wrote last edited by
                        #1063

                        It's looking smart with that pipe on it.

                        The usual suspect for running hot can be the thermostat.

                        I must admit, DTs always seem to run hot, I tried all sorts (including twin radiators) and the solution for me was to remove the thermostat.

                        This is really not ideal as the thermostat is an integral part of the engines cooling, it applies pressure to the cylinder head and prevents hot spots from forming.

                        But I found the DT was just running too hot and would benefit from a lower temperature thermostat (especially if tuned).

                        But as they say Mr Yamaha know what they're doing and it's a tried and tested machine ❤

                        Always Originate, Never Pirate!

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