Dt enjoys the cold
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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?
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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.
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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!
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@calum so the air in the fuel/air mix is raised. Or the opposite?
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@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.
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This post is deleted!
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@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
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Used to love cold damp mornings when I commuted on mine!
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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.
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@alex_dt or just adjust the carb
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@irongamer727 I find that taking the carb off completely improves performance dramatically
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@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.
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@calum
actually quite depressed now
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@declan Well that ain't going to solve anything. Just fix it.
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Sorry but what are you talking about? Taking off the carb? Broken dts?(how could that happen
)
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@irongamer727 I’m just fucking around since my dt has been playing up and @Calum expecting my reeds any day now
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@declan he's expecting your bike to go bang?
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@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
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@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.
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@calum I was thinking of that but couldn’t turn it I tried using a bottle top I didn’t have my tools lol
