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DT125R FORUM

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  4. So Close!...

So Close!...

Scheduled Pinned Locked Moved DTR
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  • S SpookDog

    @markus-w

    Cheers bud. My top end is getting noisy again. I’m really starting to believe my conrod may be a bit bent (20,000 miles of misfires may be the culprit!) the last two pistons had eaten the locator pins, but the last piston had a mm of slack on the stator side of the gudgeon pin (where the curclip lives) you could literally rattle it around!!..
    I’m gonna remove the stator cover and wobble the stator about and check for piston slap/rattle that wasn’t there a week ago. It’s not a good barrel and piston (cobbled from two different failures) but it was better than it sounds now…

    I’m just packing up 2 barrels for reboring at PJME. I just need a couple main bearings and things to build an new bottom end with a good crank I got a while ago. Hopefully then it should be as it was made to be 🥴

    S Offline
    S Offline
    SpookDog
    wrote on last edited by SpookDog
    #476

    I can’t believe I’ve got water in my carb again! This time not on reserve either! Bikes stored under cover as well! I’m going to go back to premium petrol because it supposedly has no ethanol in it? Which I believe attracts water?…

    I’ve also got a different fuel tap coming from off of a ybr, it has a large clear removable filter bowl under it that I’m hoping will act as a water trap. If it fits!…

    I’ve never had problems with contamination like this before, ever…

    On a brighter note, my main bearings have turned up, £35 for a pair of Koyos. I also have all the bearings ordered for the gearbox (Koyo again) apart from the two needle/roller bearings that I can’t find info on yet…

    HOTSHOT IIIH markus.wM 2 Replies Last reply
    0
    • S SpookDog

      I can’t believe I’ve got water in my carb again! This time not on reserve either! Bikes stored under cover as well! I’m going to go back to premium petrol because it supposedly has no ethanol in it? Which I believe attracts water?…

      I’ve also got a different fuel tap coming from off of a ybr, it has a large clear removable filter bowl under it that I’m hoping will act as a water trap. If it fits!…

      I’ve never had problems with contamination like this before, ever…

      On a brighter note, my main bearings have turned up, £35 for a pair of Koyos. I also have all the bearings ordered for the gearbox (Koyo again) apart from the two needle/roller bearings that I can’t find info on yet…

      HOTSHOT IIIH Offline
      HOTSHOT IIIH Offline
      HOTSHOT III
      wrote on last edited by
      #477

      @SpookDog PJME sell the gearbox needle roller bearing, only available genuine Yamaha but they always keep them in stock. Definitely run it on E5

      S 1 Reply Last reply
      1
      • HOTSHOT IIIH HOTSHOT III

        @SpookDog PJME sell the gearbox needle roller bearing, only available genuine Yamaha but they always keep them in stock. Definitely run it on E5

        S Offline
        S Offline
        SpookDog
        wrote on last edited by
        #478

        @HOTSHOT-III
        E5?…

        CalumC 1 Reply Last reply
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        • S SpookDog

          @HOTSHOT-III
          E5?…

          CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #479

          @SpookDog Instead of E10 fuel.

          I just run mine on VPower, but that's because it's tuned and I odn't want it detonating.

          Always Originate, Never Pirate!

          1 Reply Last reply
          0
          • S SpookDog

            I can’t believe I’ve got water in my carb again! This time not on reserve either! Bikes stored under cover as well! I’m going to go back to premium petrol because it supposedly has no ethanol in it? Which I believe attracts water?…

            I’ve also got a different fuel tap coming from off of a ybr, it has a large clear removable filter bowl under it that I’m hoping will act as a water trap. If it fits!…

            I’ve never had problems with contamination like this before, ever…

            On a brighter note, my main bearings have turned up, £35 for a pair of Koyos. I also have all the bearings ordered for the gearbox (Koyo again) apart from the two needle/roller bearings that I can’t find info on yet…

            markus.wM Offline
            markus.wM Offline
            markus.w
            wrote on last edited by
            #480

            @SpookDog I've always used Texaco super unleaded. Lots of Texaco stations near me, I never use super market fuel. Premium is 10% ethanol and super is 5% but even long before the change of ethanol I used it as it's a better quality cleaner fuel and what you lose on the 10p per litre extra cost you gain back on the extra miles per litre/gallon.

            S 1 Reply Last reply
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            • markus.wM markus.w

              @SpookDog I've always used Texaco super unleaded. Lots of Texaco stations near me, I never use super market fuel. Premium is 10% ethanol and super is 5% but even long before the change of ethanol I used it as it's a better quality cleaner fuel and what you lose on the 10p per litre extra cost you gain back on the extra miles per litre/gallon.

              S Offline
              S Offline
              SpookDog
              wrote on last edited by
              #481

              Does anyone have an idea on how much it costs to get a wheel rebuilt/respoked? Just the labour? Has anyone had any done?…

              HOTSHOT IIIH 1 Reply Last reply
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              • S SpookDog

                Does anyone have an idea on how much it costs to get a wheel rebuilt/respoked? Just the labour? Has anyone had any done?…

                HOTSHOT IIIH Offline
                HOTSHOT IIIH Offline
                HOTSHOT III
                wrote on last edited by
                #482

                @SpookDog Contact Mike at Salisbury Wheel Builders (now in Ringwood) on 07967 548015. Very good reputation locally, does everything from modern MX bikes to 100-year-old Brough Superiors, can make new spokes and supply new rims, everything

                S markus.wM 2 Replies Last reply
                2
                • HOTSHOT IIIH HOTSHOT III

                  @SpookDog Contact Mike at Salisbury Wheel Builders (now in Ringwood) on 07967 548015. Very good reputation locally, does everything from modern MX bikes to 100-year-old Brough Superiors, can make new spokes and supply new rims, everything

                  S Offline
                  S Offline
                  SpookDog
                  wrote on last edited by
                  #483

                  @HOTSHOT-III
                  Cheers buddy…

                  S 1 Reply Last reply
                  1
                  • S SpookDog

                    @HOTSHOT-III
                    Cheers buddy…

                    S Offline
                    S Offline
                    SpookDog
                    wrote on last edited by SpookDog
                    #484

                    I’m having some real problems removing the base barrel studs from the right hand clutch side casing of an engine I’m getting together for building. The flywheel side studs came out easy enough with heat and 2 nuts cinched onto it.
                    I don’t know if the locator dowel tubes are making it more difficult to get heat into them but they just won’t budge no matter how much heat I apply. The main crank bearing actually fell out while I was trying!! I’ve been putting WD40 into the dowel tubes before and after heating and trying to remove the studs, but no luck yet. If anyone knows of any arcane methods of extraction please let me know 👍 …

                    CalumC HOTSHOT IIIH 2 Replies Last reply
                    0
                    • S SpookDog

                      I’m having some real problems removing the base barrel studs from the right hand clutch side casing of an engine I’m getting together for building. The flywheel side studs came out easy enough with heat and 2 nuts cinched onto it.
                      I don’t know if the locator dowel tubes are making it more difficult to get heat into them but they just won’t budge no matter how much heat I apply. The main crank bearing actually fell out while I was trying!! I’ve been putting WD40 into the dowel tubes before and after heating and trying to remove the studs, but no luck yet. If anyone knows of any arcane methods of extraction please let me know 👍 …

                      CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by
                      #485

                      @SpookDog Yeah I had a VERY similar issue when doing my crankcase studs. I just applied ridiculous amounts of heat. I may have used an impact gun?

                      I guess what I am saying is, been there also!

                      Always Originate, Never Pirate!

                      S 1 Reply Last reply
                      0
                      • CalumC Calum

                        @SpookDog Yeah I had a VERY similar issue when doing my crankcase studs. I just applied ridiculous amounts of heat. I may have used an impact gun?

                        I guess what I am saying is, been there also!

                        S Offline
                        S Offline
                        SpookDog
                        wrote on last edited by SpookDog
                        #486

                        @Calum

                        I hear you! I’ll just have to keep on being my stubborn old self ☠️ I might try putting it in the oven @ 200+C
                        I worry about distorting the casing, or destroying it’s molecular structure/integrity though. I’m a worrier if you haven’t guessed 😵‍💫 …

                        On a brighter note, the YBR fuel tap is a direct fit. The only problem is the YBR has a plastic round ‘lever’ that doesn’t look right. A DTR one will fit, but needs modifying at the back to allow an extra outlet to the filter bowl, and I don’t have a spare to use at the moment. The YBR tap has a wicked little filter inside the catch bowl! I’ll take some pics soon as, cause words alone can’t explain what I’m trying to say…

                        CalumC 1 Reply Last reply
                        0
                        • S SpookDog

                          @Calum

                          I hear you! I’ll just have to keep on being my stubborn old self ☠️ I might try putting it in the oven @ 200+C
                          I worry about distorting the casing, or destroying it’s molecular structure/integrity though. I’m a worrier if you haven’t guessed 😵‍💫 …

                          On a brighter note, the YBR fuel tap is a direct fit. The only problem is the YBR has a plastic round ‘lever’ that doesn’t look right. A DTR one will fit, but needs modifying at the back to allow an extra outlet to the filter bowl, and I don’t have a spare to use at the moment. The YBR tap has a wicked little filter inside the catch bowl! I’ll take some pics soon as, cause words alone can’t explain what I’m trying to say…

                          CalumC Offline
                          CalumC Offline
                          Calum
                          wrote on last edited by
                          #487

                          @SpookDog yeah oven should be fine. I put my cases in 200 degrees when I fit bearings.

                          Always Originate, Never Pirate!

                          1 Reply Last reply
                          1
                          • S SpookDog

                            I’m having some real problems removing the base barrel studs from the right hand clutch side casing of an engine I’m getting together for building. The flywheel side studs came out easy enough with heat and 2 nuts cinched onto it.
                            I don’t know if the locator dowel tubes are making it more difficult to get heat into them but they just won’t budge no matter how much heat I apply. The main crank bearing actually fell out while I was trying!! I’ve been putting WD40 into the dowel tubes before and after heating and trying to remove the studs, but no luck yet. If anyone knows of any arcane methods of extraction please let me know 👍 …

                            HOTSHOT IIIH Offline
                            HOTSHOT IIIH Offline
                            HOTSHOT III
                            wrote on last edited by
                            #488

                            @SpookDog Clutch side cylinder studs: If you can get the locator dowels out first, that will expose all the rust/corrosion lurking between the stud and the dowel which you can then remove somehow without damaging the surrounding gasket face (wire brush/sharp thin things etc.); this will give the penetrating fluid a better shot at the actual stud/crankcase interface.

                            I had a set of 90 degree squares from Lidl and the handles were extruded aluminium; inside there was a round hole roughly the same size as the dowel OD running right along the handle. So I cut a 20mm or so section off the end, then made a hacksaw cut along the length of the hole so it could be opened out a little. Fitted it over the dowel with a little valve grinding paste for grip, then clamped it with mole grips on the ally so it gripped right around the circumference of the dowel without crushing it. Still took some persuasion/heat to remove the dowels and I replaced them with new but it got them out clean.

                            S 1 Reply Last reply
                            0
                            • HOTSHOT IIIH HOTSHOT III

                              @SpookDog Clutch side cylinder studs: If you can get the locator dowels out first, that will expose all the rust/corrosion lurking between the stud and the dowel which you can then remove somehow without damaging the surrounding gasket face (wire brush/sharp thin things etc.); this will give the penetrating fluid a better shot at the actual stud/crankcase interface.

                              I had a set of 90 degree squares from Lidl and the handles were extruded aluminium; inside there was a round hole roughly the same size as the dowel OD running right along the handle. So I cut a 20mm or so section off the end, then made a hacksaw cut along the length of the hole so it could be opened out a little. Fitted it over the dowel with a little valve grinding paste for grip, then clamped it with mole grips on the ally so it gripped right around the circumference of the dowel without crushing it. Still took some persuasion/heat to remove the dowels and I replaced them with new but it got them out clean.

                              S Offline
                              S Offline
                              SpookDog
                              wrote on last edited by
                              #489

                              Fair play guys, I practiced on an old casing and got both out by heating inside the casing where the oil seal retainer screws in. So the heat went into where the thread was, not just the dowels. Got both out the old casing, got one out of the ‘good’ casing then the last one snapped off deep inside. I kinda lost it with a lump hammer after that 🙂 …

                              Anyone got a decent right hand casing that they don’t want? 😛 …

                              S 1 Reply Last reply
                              0
                              • HOTSHOT IIIH HOTSHOT III

                                @SpookDog Contact Mike at Salisbury Wheel Builders (now in Ringwood) on 07967 548015. Very good reputation locally, does everything from modern MX bikes to 100-year-old Brough Superiors, can make new spokes and supply new rims, everything

                                markus.wM Offline
                                markus.wM Offline
                                markus.w
                                wrote on last edited by
                                #490

                                @HOTSHOT-III brough superior SS100 is my dream bike. T E. Lawrence of Arabia comes to mind.

                                1 Reply Last reply
                                1
                                • S SpookDog

                                  Fair play guys, I practiced on an old casing and got both out by heating inside the casing where the oil seal retainer screws in. So the heat went into where the thread was, not just the dowels. Got both out the old casing, got one out of the ‘good’ casing then the last one snapped off deep inside. I kinda lost it with a lump hammer after that 🙂 …

                                  Anyone got a decent right hand casing that they don’t want? 😛 …

                                  S Offline
                                  S Offline
                                  SpookDog
                                  wrote on last edited by
                                  #491

                                  They are magnificent looking bikes, no? There was one on display in a bike shop in Gillingham Dorst a few years ago. I’d never seen one before…

                                  I got another casing for £20 coming soon. Round 2! 🔔 🔔 🙂

                                  S 1 Reply Last reply
                                  0
                                  • S SpookDog

                                    They are magnificent looking bikes, no? There was one on display in a bike shop in Gillingham Dorst a few years ago. I’d never seen one before…

                                    I got another casing for £20 coming soon. Round 2! 🔔 🔔 🙂

                                    S Offline
                                    S Offline
                                    SpookDog
                                    wrote on last edited by SpookDog
                                    #492

                                    Electrolysis?

                                    Has anyone ever done this to remove rust from inside of a petrol tank?…

                                    Here’s the ybr tap with an adorable little filter that is absolutely top drawer quality, internal o~ring seal and all!

                                    alt text

                                    It’s a same fit as a dtr or Tzr (shown) tap. The cool thing is that it’s effective as a water trap as well as being a wicked little filter!…

                                    alt text

                                    You can fit a proper looking tap ‘handle’ to it as well. It will need a bit of surgery with a Dremel or such on the rear of the‘handle’ though. you can see the difference below:

                                    alt text

                                    I know it’s not for everyone, but it’s a wicked little filter upgrade and watertrap, if nothing else…

                                    R HOTSHOT IIIH 3 Replies Last reply
                                    1
                                    • S SpookDog

                                      Electrolysis?

                                      Has anyone ever done this to remove rust from inside of a petrol tank?…

                                      Here’s the ybr tap with an adorable little filter that is absolutely top drawer quality, internal o~ring seal and all!

                                      alt text

                                      It’s a same fit as a dtr or Tzr (shown) tap. The cool thing is that it’s effective as a water trap as well as being a wicked little filter!…

                                      alt text

                                      You can fit a proper looking tap ‘handle’ to it as well. It will need a bit of surgery with a Dremel or such on the rear of the‘handle’ though. you can see the difference below:

                                      alt text

                                      I know it’s not for everyone, but it’s a wicked little filter upgrade and watertrap, if nothing else…

                                      R Offline
                                      R Offline
                                      rollzy101
                                      wrote on last edited by
                                      #493

                                      @SpookDog highly recommend electrolysis on your tank, the final rinse i used harpic toilet cleaner and it brought my 89 tank up like new!

                                      Owned: Yamaha DT125LC, XT125, DT125R, YZF R125, CBR125, RS125

                                      1 Reply Last reply
                                      0
                                      • S SpookDog

                                        Electrolysis?

                                        Has anyone ever done this to remove rust from inside of a petrol tank?…

                                        Here’s the ybr tap with an adorable little filter that is absolutely top drawer quality, internal o~ring seal and all!

                                        alt text

                                        It’s a same fit as a dtr or Tzr (shown) tap. The cool thing is that it’s effective as a water trap as well as being a wicked little filter!…

                                        alt text

                                        You can fit a proper looking tap ‘handle’ to it as well. It will need a bit of surgery with a Dremel or such on the rear of the‘handle’ though. you can see the difference below:

                                        alt text

                                        I know it’s not for everyone, but it’s a wicked little filter upgrade and watertrap, if nothing else…

                                        HOTSHOT IIIH Offline
                                        HOTSHOT IIIH Offline
                                        HOTSHOT III
                                        wrote on last edited by
                                        #494

                                        @SpookDog That is a nice tap, guess it has that filter to stop any foreign objects entering the YBR's fuel injection system

                                        S markus.wM 2 Replies Last reply
                                        1
                                        • HOTSHOT IIIH HOTSHOT III

                                          @SpookDog That is a nice tap, guess it has that filter to stop any foreign objects entering the YBR's fuel injection system

                                          S Offline
                                          S Offline
                                          SpookDog
                                          wrote on last edited by SpookDog
                                          #495

                                          Cheers guy’s! Another question: barrel dowels? Mainly where to purchase them & how much. I could probably make some but would rather use the proper ones. If they don’t fall out I seem to be destined to destroy them 😐 …

                                          PS Gotten hold of a pair of rear indicators from a SR125 with the elusive mounting brackets. They look identical to the ones fitted to early Dtr125’s. I won’t know if they are the same PNs’ till I lay hands on them but they were £15 for the pair 🙂 …

                                          HOTSHOT IIIH 1 Reply Last reply
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