"On another note, while on the subject of rollers, have you ever switched to heavier rollers in order to increase power? "
No, as heavier rollers make for MUCH slower take off and much less low-end power.
I run 5.5 gram FLAT-SLIDER WEIGHTS on a KOSO variator, w performance RED SPRING clutch from SCRAPPYDOGSCOOTERS. Along with a kevlar belt, and I can burn the rear tire.
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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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