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    Dt enjoys the cold

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    • Irongamer727
      Irongamer727 last edited by

      Allright, when I first bought my Dt it ran great and had a perfect spark plug. Beautiful colour! But, it was bogging once up at 70-80 kph. You constantly had to flick the gas. Really annoying. So after a while I got to grips with myself. I investigated the needle. The original position of the needle is in the middle. Mine was in the top position. Giving the least amount of fuel right?

      So I adjusted the needle, to stock position.
      A huge improvement. But still not great. It was running like this at around 20°.

      Today, this morning. It was around 6° outside. And the bike ran perfectly! Absolutely perfect.
      Don't really understand. Ideas?

      1 Reply Last reply Reply Quote 0
      • Calum
        Calum last edited by

        Cold air is more desne, more O2 molecules to marry up with the atomised fuel.

        Better fuel mix equals better bang. You can expect your DT to continue increasing in performance as the days get colder...

        I remember how much of a difference the cold night made to my Aprilia when I was a wee lad.

        Always Originate, Never Pirate!

        Irongamer727 1 Reply Last reply Reply Quote 1
        • O
          oldman last edited by

          Always used to enjoy a late evening cold weather blast on my LC, my mate on a kmx and another on an RD (I think!), always seemed sweeter and faster!

          1 Reply Last reply Reply Quote 0
          • Irongamer727
            Irongamer727 @Calum last edited by

            @calum so the air in the fuel/air mix is raised. Or the opposite?

            Calum 1 Reply Last reply Reply Quote 0
            • Calum
              Calum @Irongamer727 last edited by

              @irongamer727 The fuel mixture is kept the same, the air mixture is richened.

              By the sounds of it, your bike is overfueling for 90% of riding.

              It should be a noticeable increase in power, but there shouldn't be any adverse affects during the day. It should just be noticeably quicker in the evenings when the air is colder, and therefore denser.

              Always Originate, Never Pirate!

              Irongamer727 1 Reply Last reply Reply Quote 0
              • Irongamer727
                Irongamer727 @Calum last edited by

                This post is deleted!
                Calum 1 Reply Last reply Reply Quote 0
                • Calum
                  Calum @Irongamer727 last edited by

                  @irongamer727 Two strokes are really fussy. The more you turn them, the fussier they get.

                  In stock trim, it shouldn't be necessary to alter the jet settings.

                  Cars Imported from Japan, instantly need a remap in the UK. Whilst the climates are similar, Japan actually use much better fuel than we do, and hence the Motor Octane Rating in Japan is higher, and therefore cars imported from there don't run properly over here.

                  It can be that senstiive

                  Always Originate, Never Pirate!

                  1 Reply Last reply Reply Quote 0
                  • F
                    finnerz89 last edited by

                    Used to love cold damp mornings when I commuted on mine!

                    Current bikes:
                    DT125X '07
                    Street Triple R '11
                    Aprilia ETV1000 '02

                    Previous:
                    DR650RSE '96
                    FJ1200 '92

                    1 Reply Last reply Reply Quote 0
                    • A
                      alex_dt last edited by

                      use liquid nitrogen cooling inside the airbox (old pc's overclocking kit)

                      so you dont have to wait for the evening. or winter. to have a cool ride.

                      but what about misty / foggy days? with a lot of water molecules in the air ? That's even better for the combustion.

                      Irongamer727 1 Reply Last reply Reply Quote 1
                      • Irongamer727
                        Irongamer727 @alex_dt last edited by

                        @alex_dt or just adjust the carb😉

                        declan 1 Reply Last reply Reply Quote 0
                        • declan
                          declan @Irongamer727 last edited by

                          @irongamer727 I find that taking the carb off completely improves performance dramatically

                          Calum 1 Reply Last reply Reply Quote 1
                          • Calum
                            Calum @declan last edited by

                            @declan Yeah but when you are pushing yours, any weight you can remove is going to make it better. For those of use whose DT's aren't broke, best keep the carb on.

                            Always Originate, Never Pirate!

                            declan 1 Reply Last reply Reply Quote 0
                            • declan
                              declan @Calum last edited by

                              @calum 😂😂 actually quite depressed now😒

                              Calum 1 Reply Last reply Reply Quote 0
                              • Calum
                                Calum @declan last edited by

                                @declan Well that ain't going to solve anything. Just fix it.

                                Always Originate, Never Pirate!

                                1 Reply Last reply Reply Quote 0
                                • Irongamer727
                                  Irongamer727 last edited by

                                  Sorry but what are you talking about? Taking off the carb? Broken dts?(how could that happen😉)

                                  declan 1 Reply Last reply Reply Quote 0
                                  • declan
                                    declan @Irongamer727 last edited by

                                    @irongamer727 I’m just fucking around since my dt has been playing up and @Calum expecting my reeds any day now

                                    Irongamer727 1 Reply Last reply Reply Quote 0
                                    • Irongamer727
                                      Irongamer727 @declan last edited by

                                      @declan he's expecting your bike to go bang?

                                      declan 1 Reply Last reply Reply Quote 0
                                      • declan
                                        declan @Irongamer727 last edited by

                                        @irongamer727 no what happened was I took the bike out really late and a few mile way from home it broke down the Rev cable had came loose from the slide in the carb so I had no throttle and had to push it back and my reeds are bad so I’m waiting for my new ones then I can put it back together

                                        Calum 1 Reply Last reply Reply Quote 0
                                        • Calum
                                          Calum @declan last edited by

                                          @declan Happens to the best of us.

                                          I remember it happened when I fitted my belgarda engine. Sod pushing it home though, I just turned the idle screw up and rode it home in first lol.

                                          Always Originate, Never Pirate!

                                          declan 1 Reply Last reply Reply Quote 0
                                          • declan
                                            declan @Calum last edited by

                                            @calum I was thinking of that but couldn’t turn it I tried using a bottle top I didn’t have my tools lol

                                            Calum 1 Reply Last reply Reply Quote 0
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