eton beamer speed

[outboardman]

I have a 2002 eton that will go 40mph, is there any way to get 5 to 10 mph more without going to a 70cc top end? 45 to 50 would be better for the roads around here.

[pinkscoot]

You could tune the CVT and add an expansion pipe to it. 40mph for that scoot stock s pretty good.

[moofus02]

Sport class BBK and up gears with stock pipe would get you there and make a really nice rider and no one would be able to tell

[pinkscoot]

It's all I did to my Pinkscoot and it hits 45mph GPS. It also pulls well on hills.

[90GTVert]

An expansion chamber pipe will raise RPM and power and those 2 things will increase speed. The CVT will likely need lighter rollers or sliders and stiffer clutch springs though, because it will not make as much power at low RPM so you have to keep the revs up a bit more than stock to see the advantage all around.

I put a Polini Sport/Contesta BBK on a Beamer for a customer years ago. It had a stock exhaust, snorkel removed from the airbox, and a Hoca variator. That thing would pick the wheel up a little taking off with light weights because the final drive gears are deep. Kinda upset me that it launched as hard as some of my 100cc stuff with little more than a $150 BBK. lol With rollers better suited for daily riding it would go 50+ with heavy me on it for test runs. I like increasing displacement because it gives power throughout the RPM range, the CVT tuning is easier, and a pipe can always be added later. Some prefer pipes first though, because they extend the rev range and if you are able to spin the back tire faster you'll go faster.

It's a good idea to check the carb tune too with any of these mods (BBK or pipe) IMO.

[moofus02]

My Eton was really lean in stock tune

[outboardman]

I never have tried tuning a cvt, what would I have to do? lighter or heavier weights?

[moofus02]

I take out every other weight and make a quick run so I can feel where the motor is making it's best power. It should over Rev doing this but you can also feel where the power falls off this way also. If you have a tach this is easier but I do it without. Then I find weights that put the motor as close to the max power rpm as I can. A cheep set of tuning weights will let you experiment then once you know what weight you need you can buy good weights in that size. 1000rpm clutch springs will help get the motor revved up before it takes off. I check with the cvt cover off but don't drive it that way, I only do this to see if the transmission is shifting before the clutch grabs then put the cvt cover back on

[outboardman]

would the high performance variator from scrappy dogs do me any good?

[pinkscoot]

I would go with a quality variator like Malossi or Polini. The Malossi Multivar has done me well. I'm sure there are other suggestions. But stay away from cheap variators, they won't give you much improvement and they don't last.