KymcoForum.com

Scooters - 50cc => Super 8 => Topic started by: flaviosa on October 07, 2015, 07:12:59 PM

Title: Help with slow take off (from 0 to 20km/h)
Post by: flaviosa on October 07, 2015, 07:12:59 PM
I have a kymco super 8 50cc 2t 2015.

Here is a list of what I have done so far:

-Installed smooth drive boss
-Stock variator with 5g rollers
-1500rpm clutch springs
-Tecnigas q-tre exhaust
-Contra spring from this kit (https://www.heavy-tuned.de/racing_variomatik_maxtuned_gy6_4_takter_16x13mm_50gr_60g_70g/a-67838/ (https://www.heavy-tuned.de/racing_variomatik_maxtuned_gy6_4_takter_16x13mm_50gr_60g_70g/a-67838/))
-90 main jet
-Stock airbox (restriction removed).


I haven't checked my speed with GPS but I can see the scooter going over the 80km/h. The only problem is that I still have a sluggish take of. From 0 to 20km/h is quite slow and then the acceleration is great after that. I the scooter is also holding the speed on hills pretty well.

What would you do to improve the take off (from 0 to 20km)? I am starting considering going for a BBK and bigger carb.

Thanks
Title: Re: Help with slow take off (from 0 to 20km/h)
Post by: aaron8 on October 07, 2015, 07:45:53 PM
rollers seem too light. try some 7 gram.

8.5 is stock
Title: Re: Help with slow take off (from 0 to 20km/h)
Post by: flaviosa on October 07, 2015, 08:16:20 PM
but I read in another topic that when we use sport exhaust we need to raise the rpm to gain performance. Thats why I went light. I will try 7g and see how it goes.
Title: Re: Help with slow take off (from 0 to 20km/h)
Post by: Nori on October 07, 2015, 09:51:20 PM
changing rollers to heavier ones will make the acceleration from 0-20 even worse
change the carb first , carb will improve greatly the performance with all that modifications !!
but in the end of the day remember kymcos 50cc was never capable to race other 50cc in market ;)
Title: Re: Help with slow take off (from 0 to 20km/h)
Post by: flaviosa on October 07, 2015, 11:35:38 PM
changing rollers to heavier ones will make the acceleration from 0-20 even worse
change the carb first , carb will improve greatly the performance with all that modifications !!
but in the end of the day remember kymcos 50cc was never capable to race other 50cc in market ;)

Which carb would you recommend? 19mm? Do I need a new intake manifold?
Title: Re: Help with slow take off (from 0 to 20km/h)
Post by: Nori on October 12, 2015, 07:02:59 PM
get a 20mm carb

@thanks zombie for advice , im selling my super 8 so i'll keep it stock except a polini vario