Jonway got more acceleration By jalat (Read 938 times)

[jalat]

I was just trying for fun and I moved that needle washer from middle to bottom and got remarkable upgrade for accelerating.

When looking speedometer the acceleration from 0 to 80km/h was 2.5-3 sec faster ;D


Don't loose this washer. It is small and you can easily loose it. Use good lock pliers when changing it's position.

Don't forget to put that another washer also around needle. I first messed that up and tried to figure out why it didn't get any better acceleration




Pictures are from my blog. Sadly it is written in Finnish language. I can put here a link for it but the translation is funny when used google translation

translate.google.com/translate?hl=fi&sl=fi&tl=en&u=http%3A%2F%2Fjonway250.blogspot.com%2F

[Bashan]

Thanks for sharing that, we all learn by swapping tips. When you move the washer down towards the sharp end it gives it more gas (richer) by lifting the needle farther out of the jet. When you move it towards the flat end it makes it leaner. Sounds like you really increased your performance! Rich

[jalat]

Now i have driven one day and yes. I can feel the difference in every acceleration. I will tell how the fuel consumption changed after next stop in gas station.

[Cruiser]

Jalat, did you add an additional copper washer under the c-clip on the needle? I checked my needle jet today and found the c-clip was already in the lowest slot from the factory. There also was no additional washer. I tried putting an additional washer, but was not able to push the plastic cap down far enough to lock it. It seems the tolerance is like thousands of an inch. You also mentioned that there was little difference between the middle and bottom position on the c-clip, but noticed the difference after adding the washer? Did I understand this correctly?

[jalat]

Maybe I explained it little hard. I try again.

there was already this little copper washer. I don't know is it original or did last owner of the scooter put it in there. I believe it is original because last owner was no tuning guy at all. He was just-buy-and-drive-and-do-nothing-else-to-scooter guy.

And when I first changed this c-clip from middle to lowest I somehow put that needle back to diaphragm in that way that copper washer was not aligned around needle. I noticed that when I pened that white plastic thing second time I don't know how I managed to do that wrong
-> so without that washer and c-clip in lowest position it was almost the same than driving with washer and c-clip in the middle. Needle more like in the same height. But immediately when I fixed that washer in right place I noticed the better acceleration.

[Cruiser]

Thanks Jalat. My scoot did not have any washer for the needle jet. I tried a washer I had in the shop, but I think it was too thick and probably did not sit in the recessed area very well. I will try again with a better washer.

[jalat]

OH MY GOD!
Just cruised 115km on country road. Speed all the time between 60-100km/h and also about 10-15km in city.
And trust me. I'm accelerating now full open throttle in every intersection with this more power.
Consumption 3.09l/100km which is 76.12 mpg

Double win \o/ \o/
I got way more acceleration and decreased the fuel consumption. Never have that low consumption before!