chinochung
Scoot Member
Posts: 35
Location: Metairie, Louisiana
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Post by chinochung on Feb 1, 2019 19:34:16 GMT -5
What's up y'all. As the post suggest, I was wondering how you guys accelerate when riding. It seems kinda weird to me that if I start at 1/4 open, then go to 1/2 open throttle and finally WOT, my scooter seems to accelerate faster then when going from a stop to WOT. Is it because it has a carburetor or what?
Just being curious, that's all.
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Post by benji on Feb 1, 2019 20:49:56 GMT -5
It probably doesn't have the power to use all the air/fuel mixture available at WOT when in low RPM. The excess fuel would make it act rich, and slow it down. I think.
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Post by gsx600racer on Feb 1, 2019 21:24:30 GMT -5
This is how I accelerate.  a = acceleration (m/s2) vf = the final velocity (m/s) vi = the initial velocity (m/s) t = the time in which the change occurs (s) Δv = short form for "the change in" velocity (m/s) |
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Post by SMALL CC TEK on Feb 1, 2019 21:35:01 GMT -5
That is not super uncommon . Your transmission is not set up for you , it has a factory set up and must be tuned for you.
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Post by tocoo on Feb 2, 2019 5:19:11 GMT -5
My acceleration changed when i changed my CDI. With the new CDI, I had to adjust the mixture screw and even more important the needle too.
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Post by fuzzyruttin on Feb 2, 2019 6:54:43 GMT -5
This is how I accelerate. a = acceleration (m/s2) vf = the final velocity (m/s) vi = the initial velocity (m/s) t = the time in which the change occurs (s) Δv = short form for "the change in" velocity (m/s) No jerk performance  |
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Post by fuzzyruttin on Feb 2, 2019 6:58:10 GMT -5
I was thinking this was a carb tuning issue as well, or perhaps swap the rollers for something lighter to help keep the RPMs up.
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Post by scooterpimp on Feb 2, 2019 18:16:53 GMT -5
Always mash mine to wide open untill i stop.
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Post by aeroxbud on Feb 2, 2019 20:40:01 GMT -5
Always mash mine to wide open untill i stop. My hero! Go big or go home. 😉 |
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chinochung
Scoot Member
Posts: 35
Location: Metairie, Louisiana
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Post by chinochung on Feb 4, 2019 12:18:20 GMT -5
Always mash mine to wide open untill i stop. Well that's what I've been doing and also, i recently changed weights on the varietor for some lighter ones and I enjoy the extra acceleration it gave me. Now probably my next and last mod will be a carburetor where I can change jets and fine tune it. |
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chinochung
Scoot Member
Posts: 35
Location: Metairie, Louisiana
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Post by chinochung on Feb 4, 2019 12:21:48 GMT -5
That is not super uncommon . Your transmission is not set up for you , it has a factory set up and must be tuned for you.
How would I go and do that myself or does it needs to be professionally tune. I recently changed the stock rollers for some 5.5g sliders using the stock variator and Im enjoying the extra acceleration. I was thinking on maybe doing a clutch swap next or maybe just go for a better carburetor. This is my main drive and my only source of income at the moment. I just want enough power to help me with the overpasses in my city.
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Post by GrumpyUnk on Feb 4, 2019 14:13:22 GMT -5
If the engine will increase rpms without hesitation, the fastest you will accelerate will be using WOT from a stop. Some carburetors will have 'flat' spots, or 'rich' spots in their operation, as the rpms increase. If yours runs smoothly through the rpm range, WOT is fine.
The lighter variator weights will allow the transmission ratio to stay in 'lower gear' longer(higher rpms) before the weights come into effect to squeeze the belt, and force the ratio to higher gear. A heavier weight would tend to overcome the spring at lower rpms.
To have reasonable knowledge of what is going on, you need to have a tachometer. You can get one of the tach/hour meters from the world wide web, DaRiver, DaBay, or DaAliexpress. I have gotten several for around $7US, to my mailbox. Definitely tell me what the engine is doing as the scoot accelerates. When I see the rpms go over 7500, or actually over 8,000 rpms, I know I need to change something. New belt, and some heavier sliders, and the rpms came down, and acceleration was actually better, more power being sent to the wheels than possibly slipping the belt(?).
tom
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