Maximize Top Speed

posey24 · 10-02-2014, 12:05 AM

I keep reading that all the upgrades i do including big bore kit wont.give me anymore top speed...on a generally flat or slight down hill WOT i can get to 40 at 9k rpm. I will be doing the big bore kit from a local vegas dealer. As well as a new carb and cam shaft. What can i do to increase my top speed and still be at or belowe 8k rpm. With out sacrificing too much acceleration.

blueboy5000 · 10-03-2014, 08:09 AM

Weights and clutch.

dwint51 · 10-03-2014, 09:17 PM

with those rpms i would say go atleast a gram higher on your weights.i bought a performance variator and i get better take off and top end and my rpms are 1000 lower

BoostCrzy · 10-05-2014, 03:48 PM

regardless of the roller weight....at some point the rpm will eventually start rising as you reach the variator's limit ...and also what is your weight?...this has a large effect on what rollers to run. I am 165lbs and use 5g rollers in my Ruckus to get a solid 55mph out of my machine...very comfortable at 45-50mph cruising.

First off I would check your current variator/weights/belt for wear....these can reduce top speed significantly if they are wearing out. then I would look into a larger variator(assuming your belt/drive pulley can accommodate more shift-out). Larger weights will drop the RPM at a given speed until you run out of room on the variator.

The clutch wont help top speed...just acceleration from a stop.

ncdad42 · 11-10-2014, 09:18 AM

posey24 you could replace your rear gears. drop 1 and 1 or 2 and 2(teeth ) on the gears . That is what I'm getting ready to do on my Eton Sport 50. Good Luck

blueboy5000 · 11-18-2014, 07:55 AM

Etons are REALLY high geared, they are already set for high-end top speed. my Eton Beemer hits 50+ mph on flats with the stock gears. The biggest gain I've hit came from the variator and clutch upgrades. I weigh 210lbs.

10-03-2014, 08:09 AM	#2
blueboy5000 Join Date: Jul 2011 Location: Connecticut Posts: 493	Weights and clutch. __________________ 2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats.
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11-18-2014, 07:55 AM	#6
blueboy5000 Join Date: Jul 2011 Location: Connecticut Posts: 493	Etons are REALLY high geared, they are already set for high-end top speed. my Eton Beemer hits 50+ mph on flats with the stock gears. The biggest gain I've hit came from the variator and clutch upgrades. I weigh 210lbs. __________________ 2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats.
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10-05-2014, 03:48 PM	#4
BoostCrzy Join Date: Mar 2014 Posts: 21	regardless of the roller weight....at some point the rpm will eventually start rising as you reach the variator's limit ...and also what is your weight?...this has a large effect on what rollers to run. I am 165lbs and use 5g rollers in my Ruckus to get a solid 55mph out of my machine...very comfortable at 45-50mph cruising. First off I would check your current variator/weights/belt for wear....these can reduce top speed significantly if they are wearing out. then I would look into a larger variator(assuming your belt/drive pulley can accommodate more shift-out). Larger weights will drop the RPM at a given speed until you run out of room on the variator. The clutch wont help top speed...just acceleration from a stop.
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