Neco 2013 Result Is Out

What 50cc scooter has the highest top speed?

There is not a definite answer to this question as i have not ran each 50cc scooter on a dyno, but what i can tell you is my experience from riding many 50cc scooters over the last 4 years,My first 50cc was a 2011 Yamaha Jog RR liquid cooled this moped was restricted from factory as all 50cc bikes are required to be.i am not entirely sure why but i could get 42mph on a cold engine then when warmed up it would go 30 mph as it is supposed to.Without de restricting a moped you will always get around 30 mph.This leads to scooter tuning, i later got my Jog de restricted by my yamaha dealer and it would go 46 mph on a cold engine and 50mph when warm, as with most scooters the restrictions are on the variator front pulley in the form of a washer and a restriction to limit airflow in the exhaust.If you wish to get a fast moped it has to be two stroke as they output more power.the best steps to make a moped go faster are:1. de restrict the variator2. derestrict the stock exhaust or replace with a aftermarket power pipe. if you used an aftermarket pipe you will most likely need to change the carb/jetting as more air can flow out of the engine it will need more fuel inside it.3. Change the roller weights, when you de restrict the exhaust it will change the rpm at which the power is, you will need to change the roller weights so the variator only goes up the gearing when the scooter is making the most power you use lower weights for higher rpm and heavier for lower rpm.and no, rollers do not affect the top speed, they only change when the bike changes gears and not the length of the gears4. upgrade the variator to have higher gearing, most 50cc scooters will run out of gearing at 35mph so from then higher revs will mean higher speed.change the variator size for a longer gear.from then you will be looking at bigger cc kits which is out of my knowledge ;) here is a list of the fastest mopeds i have come across:piaggio zip 2t, These are normally used for racing as it has a great piaggio 2 stroke engine and they are lightweight, there is also a liquid cooled sp model which is faster.Aprilia SR, I see these more often as they normally have the highest top speed of 50cc scooters (50-60mph with a good tune) , these also use a piaggio engine but are heavier. they have  a higher gear ratio than most and take a tune quite nicely.Yamaha Aerox, Jog RR pretty much anything new and liquid cooled minus peugeot are rather fast.but still just get a bigger bike

How fast can I expect a 50CC moped to go?

American answer here (specifically Virginia, although the other 49 states pretty much fall in line): Legally what you normally call a “50cc scooter” is a 49cc “moped”. These are mopeds whether or not they have pedal assist, and whether or not they look like a motorized bicycle or a full blown scooter.In Virginia, a moped may be ridden by anyone who is physically able to apply for a driver’s license, but a driver’s license is not necessary (aka, the blind or severely physically handicapped need not apply - for obvious safety reasons). What is necessary is some form of picture ID (usually gotten at the DMV) and a DOT legal helmet.The purpose of this classification is to differentiate them from “motorcycles”, which need both a legal driver’s license AND a motorcycle endorsement on that license.Performance of a “moped” is legally limited to 35mph (and the engine size is usually written as “under 50cc”, thus the 49cc size). Realistically, most Chinese scooters will comfortably cruise at 27–30mph and will top out at 35. The more expensive Japanese scooters (Honda, Yamaha, etc.) will cruise at 32–35, with an absolute top speed of just shy of 40.The police can be very sticky regarding that top speed. If you’re scooter is bone stock, you can expect to be left alone, even if it’ll to a bit above 35 on the flat. However, if you’re scooter is modified, expect an occasional radar gun trained on you. One of the salesmen at the Honda/Yamaha/Can-Am shop where I work had a well modified Honda Ruckus, and was picked off doing almost 45. He got a ticket.