Piaggio AC 2T problem! :(

ye exactly... its in too "low a gear" ratio wise between the clutch and variator hence lots of revs with little movement.. all your doing is trippeling the wear per mile on the parts. im off to change mine. pissing me off now (i ride on a 3 lane carridgeway to work for an hour... bore.com and its not good having too light rollers in those conditions. stock engine kills anything prittymuch to 40 but then just revs... but ye, change em. theres mph WITH fuel econimy hiding inside your bike. spend a little to do alot...


as for poorly produced carbs... around town and blips here and there you dont notice petrol use on a scoot.. even tunned ones. ye it drinks a bit of fuel, but its not untill your doing serious mialage on a comparable journey. ive noticed serious differences simply by using a different filter (obviously setup to suit)
im not trying to make a point, im mearly saying that it depends entirely on what the bike is used for/the other parts on it. road tunning is not race tunning. people turn there road bike into a race buike all the time. im talking commutable research and development, the sort of wich went in to making the engines we all bastardise with tunning goodies caining cranks and basicly thrashing stupid ammounts of fuel. slapping any chineese part on your bike is upto you... i wouldent, im not stupid enough to rely on chineese engineering (yes, i rely on my bikes as transport... it breaks, i loose a minimum of £100 just missing work/getting home/fixing the thing) id rather buy reputable parts... not unknown origin parts made by 10,000 different people in 1000 different factorys and sold by 100 different people. yes a flatslide carb is a good carb, its main advantage is supplying any engine wiht more fuel and air.. doh. im talking driving a bike about (think first what bike it is and secondly about the "my runabout" prefix in the first post) in wich case putting any carb thats bigger would be a waste of time. you want power wihtout noise heat and fuel consumption. this is the aim, its not gonna happen as piaggio have done a good job putting the bikes together wiht a mix of all the above (the years of fucking about with carb sizes exhausts port timings and so on they did for years befor releasing an engine) the boy has come on wiht a problem, were now telling him to throw parts at it for what reason exactly?


sort your rollers. if you want some more poke bash the gears out an throw in a 180 set/gear up.. maybe a 150/172 and leave it at that. well, if you can get your hands on a stock runner pipe do that as there slightly better. (they used the pipe on the 150 version of your bike) if however you wanna go faster than that get another bike... its too heavy to tune and will just drink fuel

 

if you wanna ditch the stocker carb change for a runner type dell carb. there slightly better. then go up to a 25 roundslide dell, if thats not enough then bash a 28/30 of ether round or pwk type... a 24 pwk is just a plain waste of time. there well designed power carbs meaning you need somthing bigger. a 20 on this size engine is direly restrictive.. the only reason to not run a bigger than 25 for under full throttle is the size of the redblock..


i could waffel for hours. but ive used many many carbs on many many bikes and found if you wanna run a proper carb like a pwk then match it to the recdomended size per cc... my 85 crosser runs a 28mm flatslide stock. if you want all out power then 28 pwk... but ye, you need a few more bits first. stock carb is FINE untill you have a 172. all you will do is drink fuel and burn pistons for absoloutly no reason than a little more top end you could have got from tunning the transmission and your own carb a little better. (everyones different... ive done it this way for 10 odd years now)