View Single Post
Old 08-02-2013, 07:56 AM   #6
blueboy5000   blueboy5000 is offline
 
blueboy5000's Avatar
 
Join Date: Jul 2011
Location: Connecticut
Posts: 493
Quote:
Originally Posted by Swordsman View Post
I think the OP means that Chinese GY6 are comparable to the higher-end machines AFTER the upgrades, which still comes out cheaper.

Maybe this is a tangent, but what is it about the GY6 clones that makes them less powerful than other brands of the same displacement? I've noticed a lot of the Chinese 150cc put out right around 8-9 HP, while carbed Kymcos and Genuines pump out closer to 11-13 HP... roughly 40% more juice. Is it simply the age of the design (being based off of 30 year old tech), or is it the inferior quality stock parts? Do these upgrades noticeably close the performance gap?

~SM
Yes the upgrades do indeed close the gap. Most gy6 bikes have cheap components and are based on a 30 year old Honda design. With proper, inexpensive, easy to do mods, a gy6 will easily produce 12 to 14 hp.
__________________
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.