Idle speed on a Honda CBR250RR?

[overworkedmonkey]

One more question though, is it ok to keep the throttle open all the time while cruising?

[SMOKEU]

One more question though, is it ok to keep the throttle open all the time while cruising?

You have to keep the throttle open otherwise you won't be developing enough power to go faster than jogging pace. Try driving a petrol car and then backing off the throttle(s). The same thing happens on a bike.

[overworkedmonkey]

You have to keep the throttle open otherwise you won't be developing enough power to go faster than jogging pace. Try driving a petrol car and then backing off the throttle(s). The same thing happens on a bike.

So I don't need to open and close (close it partially) it all the time? Is there any reason the need to open and close (close it parially) would rise?

[xen]

You don't want to hold it at a constant rpm when you're breaking a new engine in but all other times no worries.

[overworkedmonkey]

You don't want to hold it at a constant rpm when you're breaking a new engine in but all other times no worries.

I take it when you refer to new you mean, a brand new bike from the shop. Any reason as to why that is?

[SMOKEU]

I take it when you refer to new you mean, a brand new bike from the shop. Any reason as to why that is?

There's a special technique for running in a BRAND NEW engine. This also applies to engines that have been freshly rebuilt. I won't go into details, but if you're buying a second hand bike then don't worry about running it in.

[overworkedmonkey]

There's a special technique for running in a BRAND NEW engine. This also applies to engines that have been freshly rebuilt. I won't go into details, but if you're buying a second hand bike then don't worry about running it in.

Thanks. I am curious though. Why would you need a special technique?

[Slyer]

Because when you are first running an engine it is freshly molded and assembled. Under normal use of the engine a fair amount of metal is worn down in the engine in this new state.
Be too harsh on it and you can permanently damage it, be too easy and it won't break in properly.

There's a million discussions on it. But the official word from manufacturers is to just not exceed a certain rev range until after 1000km.

[overworkedmonkey]

Because when you are first running an engine it is freshly molded and assembled. Under normal use of the engine a fair amount of metal is worn down in the engine in this new state.
Be too harsh on it and you can permanently damage it, be too easy and it won't break in properly.

There's a million discussions on it. But the official word from manufacturers is to just not exceed a certain rev range until after 1000km.

Very interesting. Did not know you had to break into a new engine. I would thought they would have been designed to simply ride off without a care in the world.

[Slyer]

The same thing goes for cars but to a lesser degree as they don't rev to 16k rpm