when revving the bike, rc vavle opens and closes as its revving up, isnt it supposed to open when revving up and close when the revs go down.

and cant get the bike to idle at the proper rev, its either too high or too low.
_________________
Just Bought MC16.

The RC Valves do open/close depending on the RPM of the engine, so they should be working fine.

As for the idle, you can check out the workshop area for information on setting up your carbs.
_________________
Charles Gallant

o o


Last edited by DifferentStrokes on Mon Sep 28, 2009 9:33 pm; edited 1 time in total

I think a standard bike sits somewhere between 1150-1250rpm normally. Should be fine like that.
_________________
NSR300R - Why did i ever have a 250...

You often find that if the idle is set too high the RC Valve will open, and that can then cause the revs hang. The RC Valve opens at low RPM briefly to aid in setting them up.

Another reason the RPM can hang is because of an air leak or because of carb inbalance.

The "normal" idle does often appear too low, and it does seem like the bike will cut out at any moment, but so long as the carbs are tuned properly*, there's no reason why it should.

*PJ38's (like Maxim's) can be an exception, as they have no idle circuit. They can be fooled into idling though!
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

Check us out on Facebook! Please "like" our page!

o o


Last edited by DifferentStrokes on Mon Sep 28, 2009 9:33 pm; edited 1 time in total

I've got PWK39's Andy! Which have a nice little idle circuit. Mine has to idle at around 1650-1700 though to not bog. It runs fine like this.
_________________
NSR300R - Why did i ever have a 250...

Sorry, I thought you had PJ38's. You did have PJ's didn't you, or am I going mad?
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

Check us out on Facebook! Please "like" our page!

No you're not going mad. Still got them too.
_________________
NSR300R - Why did i ever have a 250...