500miles, rings should be setting now, you'll probably be getting a little more top end and more torque here soon, make sure the exhaust gasket isn't restricting it, mine had to be trimmed it was about 1/4 inch different from the exhaust output.
you can probably get closer to 26-30mph wot with the 50 after it fully breaks in.
that will be above 7000 rpm , so up to you if you want to let it rev out
..heh
got me a cheap bike today...this ones a mountain bike...gonna be a tight fit...but i think it will go
cant wait to get riding again, i also bought a bike speedo, ill check with that also, before i was getting 32 (followed by car) and 34 (followed by a scooter), with 44 tooth sprocket,
both probably wrong..but maybe i can get a decent average from the 3