When im riding my moped anywhere , even at a speed of 35-38 mph . The revs are through the roof i.e 9000rpm. At them revs surely it isnt good for the bike . And i was wondering what it could be making it rev so high . P.s this is my first bike , and i dont really know much about them either so any help is much appreciated
Heavier roller weights in the variator would lower RPM. If the scoot is modified, it could need to keep the revs up to stay in it's powerband. 9,000RPM really isn't anything crazy for a scooter. Sounds high if it's stock though.
since it is a cobra ill say first hand experience the rings are junk they give to easily and ther old bikes so youd probably need to get neew top end. if the rings are going then that could be a coulprit for high reving. my cobra would got to 9k then reset back to 8500 like a glitch so theyre not 100 percent accurate.
Last Edit: Mar 16, 2013 19:07:33 GMT -5 by oldgeek
Just Keep Riding!
05 Yamati RX8 53mph 70cc stage6 Street Race iron kit, Top Racing HPC crank, Technigas NextR pipe, 21mm Dellorto carb, Hoca variator with slider weights, Stock clutch lightened shoes red springs, Stock pulley with 1200 RPM contra spring on a ball bearing base, Stock CVT cover with lots of vent holes added.
If your only seeing 35-38MPH at those RPM,s im betting the CVT drive boss is still restricted.?
2003 Kymco Cobra A/C 47mm iron bore Naraku cylinder with Malossi Sport head. Leo Vince SP3 exhaust, 21mm PHBG carb, factory intake modified, factory reedblock with my own.35mm CF reeds, Factory airbox modded, Polini vari with 7.75g Dr.P sliders, OEM and NCY mixed rear pulley, OEM clutch with tighter springs, stock clutch bell, Top Racing final drive gears (noisy SOBs).
NASRA 2013-current 1/8th mile dragrace record holder with an 8.3s pass at over 77MPH on a custom rail built by 190mech