trust me it will do 50 mph plus this is the second bike I have built with a gp460 these engines are no joke.
Yeah, I know a lot about the CY46 engines as I own 4 of them. My fastest of the 4 has the Trevor Simpson ported cylinder and is using the 15:1 compression dome......I've hit 52mph on flat ground with this engine mounted on my BladeZ Moby scoot.
I've also got a brand new TS reed block for another GP460 and when I port a new cylinder and piston (add boost ports) for this engine, I'll let you know how fast 22,000rpm will get you going with this engine. A china girl is a waste of time when you think of what these Chinese 46cc engines will do.
I still say posting 50mph on a motorized bicycle is a
BOLD statement and there is a reason for that.......seeing is believing and talk is cheap!
GP460 = CY46....... which is a 46cc (Chinese), Zenoah (Japanese) knock-off with lots of extra potential and quality aftermarket parts.