New bike run-in process?

[Sellout]

Hey all,

This may be a silly q, but... I have a new Zongshen 250cc dual purpose and it is very slow. There is a thread in newbies that shows others getting up around the 130kph mark.

I am wondering if there is a limiter of some description? Or do new engines just take time to get up to speed?? I have never had a new vehicle before so don't really know what to expect. And I don't have a manual to look at either!

It has had its services and so forth, but when brand spankin' it could get to around 70kph, now gets to about 85kph. The dashboard has shat itself (no longer reads speed - I have replaced speedo cable but the LCD display unit seems to be at fault here) don't know if that would make any difference.

I assume the engine is too cheap to have a computer-controlled limiter, but maybe there is a wear indicator in the engine somewhere? Anyone heard about this or can shed some light would be great!

Cheers!

[FROSTY:Me]

Working on the theory yours isn't just a dudd motor.
id be looking for exhaust restrictions and carb restrictions. maybe somothing stoppping ya getting full throttle

[Sellout]

yeah, I'm workin under the same assumption... It doesn't feel like it is getting to full power if you know what I mean, feels like it has something more to give. I'll have a look-see!

[.produKt]

I feel that the problem lies with the manufacturer .

Not that im against chinese stuff (typign on one now lol)

[nodrog:Me]

check there isnt a throttle stop screw stopping the butterfly from opening fully.

[motorbyclist]

speed governor

either that ro it's a dud engine

me and my brother bought ourselves some chinese pocket rockets a while back. same seller, same shipment, same run in, same fuel mix, same everything but the paintjob

sure enough mine tops out at 40kph and his will do 60 and get there sooner, with a powerband you can actually feel...

considering the trouble both bikes have given us and other chinese bikes i've seen, i would never recommend buying a chinese bike even if you cannot afford the japanese one - especially if it's a road bike