Thanks for the help have ordered some new sprockets thanks shaun, Hi, I just got my Vespa Primavera 50 2T derestricted in certified Vespa garage, but on my way home I noticed that acceleration isnt what it used to be. We're always willing to return your call if you have questions. In most cases, the connecting rod is shortened the same distance that the big end bearing is moved. Im an under age scooter rider from India. This is probably somewhere around 7-800rpm. These are bolt on solutions and cost only about 20-30Euros. Do you know much about where the restrictions in these lie and how id go about removing them? 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. The Yamaha Minarelli engines have a dummy pipe and a variator ring applied, similar to the Piaggio 2 Strokes. There are heavy fines and you might loose your license when get caught or involved in an accident! Also, this is only valid for the 50cc models. REAR PULLEY There is a squealing noise coming from around the rear wheel when I initially start up and pull away, the same noise as you sometimes hear on a car as it pulls away, but i might have mistakenly put this down to the brake needing to be replaced, although the brake has poor stopping distance! Thank you! I tried to adjust the needle in the carb but its non adjustable Clutch locks up at 4200 rpm and revs up to 7800-8000rpm before the variator starts to expand and shift Drops down to 6k and slow to build rpm back up to redline which is 8k. The intake is attached to the scooter by two or three bolts, usually with two attached to the underside of the rear wheel well and one attached to the variator case. It is not limited CDI as I have run 91-92k rpm at over 50mph. Those restrictions from the manufacturer are kind of funny in Colorado. Could I run the scooter without a thermostat or would you not recomend doing that. Hi, I have a yamaha YN50 neos 49cc 2011 4 STROKE scooter. For the more advanced tile enthusiasts, having tile nippers, tile cutters and trowels would be good. Brought to you by Leaf Group Step 1 Detach the kickstart from the variator system. Can you please, please, please give me any info about my bike and how to get rid of this restriction? What carb is it? The scooter brakes through the 140 mm drum-type brake at its rear. Alter the variator system by installing aftermarket variator pulleys.