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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 219.2k Views
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  • S SpookDog

    My back tyre seems to develop an ‘edge’ after a few thousand miles. Or a while, I haven’t been keeping track of mileage so much since my head stopped blowing…

    alt text

    The centre seems to develop a flat spot because most miles are covered upright. When I go to lean, once you leave the flat bit, there’s an edge that is not very stable feeling, it kind of shimmys before it bites. Anyone else experienced this with knobbly tyres? It’s like all of a sudden you’re on a knife edge! It doesn’t help that the tread there is deep and ‘flexy’…
    It’s gotten to the point where I’m thinking of ‘adventure bike’ type ‘trail’ tyres. I can’t remember the last time I went off tarmac. I refuse to put 100% road tyres on tho’
    Any recommendations for good, decent wearing tyres?…

    Or should I just get out the angle grinder? Or learn to doughnut! ☠️

    PS: @HOTSHOT-III
    Do you still have the dtr wheel set for sale?…

    HOTSHOT IIIH Offline
    HOTSHOT IIIH Offline
    HOTSHOT III
    wrote on last edited by
    #688

    @SpookDog Yes bud, wheelset is still available:

    https://www.ebay.co.uk/itm/266386635256

    Avon TrailRiders are excellent tyres and all I ever used on all my DTRs. They're roughly 85% road/15% dirt so very sticky and fast rolling on tarmac but still good for gentle off-roading when it's bone dry.

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    • Hark_PtooieH Offline
      Hark_PtooieH Offline
      Hark_Ptooie
      wrote on last edited by
      #689

      Yes, the edge knobs are a bit flexible sideways, and if you are leaning over you are putting more than 1g force on them, so it makes sense that stability suffers. Increasing tyre pressure mitigates it somewhat.

      S 1 Reply Last reply
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      • Hark_PtooieH Hark_Ptooie

        Yes, the edge knobs are a bit flexible sideways, and if you are leaning over you are putting more than 1g force on them, so it makes sense that stability suffers. Increasing tyre pressure mitigates it somewhat.

        S Offline
        S Offline
        SpookDog
        wrote on last edited by SpookDog
        #690

        @Hark_Ptooie

        Doesn’t help that they are now twice the depth of the centre tread.

        I need to find a safe bit of tarmac somewhere that I can practice doughnuts. Last time I tried it was a Vespa p200 with a sidecar and an off duty PC reported me for reckless driving 👍 It was in a ‘off hours’ dead end car park by the river. So I’m a bit more cautious now…
        I don’t think that the angle grinder will be uniform enough though 🙂 …

        Apparently Some manufacturers are using different hardness ‘bands’ in their tyres…

        alt text

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        • Hark_PtooieH Offline
          Hark_PtooieH Offline
          Hark_Ptooie
          wrote on last edited by
          #691

          Vespa with a sidecar doing donuts? ROFL

          The rear tyre on my CBR resembled a baker's rolling pin more than anything.

          S 1 Reply Last reply
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          • Hark_PtooieH Hark_Ptooie

            Vespa with a sidecar doing donuts? ROFL

            The rear tyre on my CBR resembled a baker's rolling pin more than anything.

            S Offline
            S Offline
            SpookDog
            wrote on last edited by SpookDog
            #692

            @Hark_Ptooie

            ??? It’s real fuxin easy as long as you don’t try and turn left while you’re doing it, work it out 😉 …

            Depending on which way the pin is facing. I don’t know if that’s bad or not…

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            • S Offline
              S Offline
              SpookDog
              wrote on last edited by SpookDog
              #693

              Rear brake stopped biting today. I had noticed it had been fading over the last few rides. It turns out that the piston is pitted at a point where it was left standing for a long while sometime in its past. Don’t have any money to replace the piston and seals at the moment, so I’m gonna have to drill & fill the pits to squeeze a few more thousand miles out of it 🙂 …

              I would like to fit a 35mm front calliper on the rear. I have one ready to go but I had to buy a 14mm master to match it. Accidentally, I broke off the plastic fitting that the reservoir tube fits on to. Once I have the pennies for that I’ll get on with this long overdue upgrade. My rear brake makes up well over 50% of my braking, so it’s needed…

              I have some ideas for a front disc upgrade, but I need to find someone who has access to ‘water cut’ a disc centre that matches a Dtr hub to a suitable sized ‘floating disc’ outer…

              Edit: reservoir tube in post…
              Need to test charging coil output to see why the bike is eating batteries. If output is good from coil replace regulator (long overdue) with used part…

              S 1 Reply Last reply
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              • S SpookDog

                Rear brake stopped biting today. I had noticed it had been fading over the last few rides. It turns out that the piston is pitted at a point where it was left standing for a long while sometime in its past. Don’t have any money to replace the piston and seals at the moment, so I’m gonna have to drill & fill the pits to squeeze a few more thousand miles out of it 🙂 …

                I would like to fit a 35mm front calliper on the rear. I have one ready to go but I had to buy a 14mm master to match it. Accidentally, I broke off the plastic fitting that the reservoir tube fits on to. Once I have the pennies for that I’ll get on with this long overdue upgrade. My rear brake makes up well over 50% of my braking, so it’s needed…

                I have some ideas for a front disc upgrade, but I need to find someone who has access to ‘water cut’ a disc centre that matches a Dtr hub to a suitable sized ‘floating disc’ outer…

                Edit: reservoir tube in post…
                Need to test charging coil output to see why the bike is eating batteries. If output is good from coil replace regulator (long overdue) with used part…

                S Offline
                S Offline
                SpookDog
                wrote on last edited by
                #694

                @SpookDog

                Rear master to reservoir outlet turned up today, at last! Strangely enough the 1/2 master has ‘settled in’ and is providing enough fluid to the 35mm front calliper that I’ve fitted to the back. Go figure!…

                Had to clean out the carb again today, namely water globlet in the pilot jet as usual. I don’t understand why I suffer from this so often. New petrol cap time, maybe?…

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                • S SpookDog

                  @SpookDog

                  Rear master to reservoir outlet turned up today, at last! Strangely enough the 1/2 master has ‘settled in’ and is providing enough fluid to the 35mm front calliper that I’ve fitted to the back. Go figure!…

                  Had to clean out the carb again today, namely water globlet in the pilot jet as usual. I don’t understand why I suffer from this so often. New petrol cap time, maybe?…

                  R Offline
                  R Offline
                  R3L3_89
                  wrote on last edited by
                  #695

                  @SpookDog cover the gas tank cap with electical tape, I did that as soon as I got my bike, the keyhole can leak. It's not likely someone will try to steal your gas and it's inconvenient to lock and unlock the tank every time you need to fill it up which happens too often with this thing for some reason

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                  • S SpookDog

                    @SpookDog

                    Rear master to reservoir outlet turned up today, at last! Strangely enough the 1/2 master has ‘settled in’ and is providing enough fluid to the 35mm front calliper that I’ve fitted to the back. Go figure!…

                    Had to clean out the carb again today, namely water globlet in the pilot jet as usual. I don’t understand why I suffer from this so often. New petrol cap time, maybe?…

                    S Offline
                    S Offline
                    SpookDog
                    wrote on last edited by
                    #696

                    alt text

                    What to do, what to do with you! Hmm?…

                    The Dtr?

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                    • CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by Calum
                      #697

                      I must admit, I have really changed my tune with the 170 kit.

                      What I would say is, make sure the powervalve is ported flush. Genuinly mine protruded the exhaust port stock. So benefits from modding the valve even if you leave the exhaust port alone.

                      I think the DTR is a better choice for the 170. Just because you're more likely to be utilising the benefit from the bottom end more due to the nature of the bike.

                      TZR is more of an open stretch bike where you'll want more HP up the top end.

                      Always Originate, Never Pirate!

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                      • MadGyverM Offline
                        MadGyverM Offline
                        MadGyver
                        wrote on last edited by
                        #698

                        @SpookDog
                        The DTR of course!

                        I need my tools and a pile of junk.....

                        1 Reply Last reply
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                        • MadGyverM Offline
                          MadGyverM Offline
                          MadGyver
                          wrote on last edited by
                          #699

                          Is it the one from ebay recently posted to another thread?

                          I need my tools and a pile of junk.....

                          S 1 Reply Last reply
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                          • MadGyverM MadGyver

                            Is it the one from ebay recently posted to another thread?

                            S Offline
                            S Offline
                            SpookDog
                            wrote on last edited by SpookDog
                            #700

                            @MadGyver

                            Sorry for tardy reply, yes it is £155 posted.

                            Are all 170 Athenas fitted with an o-ring head? Or are some fitted with a gasket?…

                            Yeah, it’s going to live on the Dtr…

                            S 1 Reply Last reply
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                            • S SpookDog

                              @MadGyver

                              Sorry for tardy reply, yes it is £155 posted.

                              Are all 170 Athenas fitted with an o-ring head? Or are some fitted with a gasket?…

                              Yeah, it’s going to live on the Dtr…

                              S Offline
                              S Offline
                              SpookDog
                              wrote on last edited by
                              #701

                              Can anyone please let me know where I can get head gaskets for the 170 top end?
                              Also if there are o-ring upgrades?..
                              Ta!

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                              • CalumC Offline
                                CalumC Offline
                                Calum
                                wrote on last edited by
                                #702

                                PJME. Never needed an O-Ring upgrade. I've not had any issues with the head gaskets for my 170 kit.

                                Always Originate, Never Pirate!

                                1 Reply Last reply
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                                • MadGyverM Offline
                                  MadGyverM Offline
                                  MadGyver
                                  wrote on last edited by MadGyver
                                  #703

                                  @SpookDog All Athena kits i've seen are with gasket. The o ring head is custom.
                                  I 'm not fan of this type of sealant for a combastion chamber,good only for competition with frequent rebuilds.

                                  I need my tools and a pile of junk.....

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                                  • CalumC Offline
                                    CalumC Offline
                                    Calum
                                    wrote on last edited by
                                    #704

                                    @MadGyver The O-Ring sits between the skull-cap and head cylinder head.

                                    Always Originate, Never Pirate!

                                    1 Reply Last reply
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                                    • MadGyverM Offline
                                      MadGyverM Offline
                                      MadGyver
                                      wrote on last edited by
                                      #705

                                      @Calum I thought he meant the o-ring groove they do on cylinder head for replacing the gasket with o-ring.

                                      I need my tools and a pile of junk.....

                                      1 Reply Last reply
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                                      • CalumC Offline
                                        CalumC Offline
                                        Calum
                                        wrote on last edited by
                                        #706

                                        Ah right. No, I didn't realise that the Athena kit used an O Ring for the above and consequently it leaked coolant 🤣

                                        Always Originate, Never Pirate!

                                        S 1 Reply Last reply
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                                        • CalumC Calum

                                          Ah right. No, I didn't realise that the Athena kit used an O Ring for the above and consequently it leaked coolant 🤣

                                          S Offline
                                          S Offline
                                          SpookDog
                                          wrote on last edited by
                                          #707

                                          @Calum

                                          I though you had an oring conversion on your kit?
                                          I didn’t know that they all used gaskets , doh!

                                          S 1 Reply Last reply
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