05 rx-1 max rpm

[dicky2077]

I have a 05 rx-1 er-le & I had to put a new used primary clutch on it the clutch is from a 08 nytro I put the rx-1 weights in it & it only revs 9000 rpm is this correct or should it rev higher? I would also like to know if I can run the nytro weights? Any help would be great. Also I forgot to tell that I just cleaned carbs & put inline filters & shutoff valve's just before the fuel pumps. I never rode this sled before changing the primary so I don't know what it ran before.

 

[Turk]

You should be pulling 10,200ish rpm The primary spring will account for some of those rpm,s but not that much.
It will overrev like crazy with nytro weights.

 

[dicky2077]

rx-1 max rpm

thanks turk. I'm very new to clutching. with that said if I run less weight will it rev higher? can I take one or both of the rivets out of the weights?

 

[Turk]

There really is no reason it should rev that low but your right. Lighter weight in the primary clutch= higher rpm,s.

 

[Len Todd]

If everything else is right, the stock weights are right on the button. So I would go looking elsewhere. For example:

Have you cleaned your carbs correctly this year? I have found that the carbs will shave off a lot off the RPM. Ideally you should be seeing 10,200 at launch, ~ 9900+ at hookup and then creep back up to 10,200+. I attached a file on carb cleaning.

Have you replaced the Secondary's spring? If the Spring goes weak, the RPMs tend to drop off because there is less resistance to up-shifting so the secondary becomes "geared too high" so to speak. What twist is your Secondary at anyway? Should be 60 degrees. I attached a file on Secondary Cleaning and inspection.

 

[dicky2077]

max rpm

Thanks for the info I will check everything & let you know what I find

 

[SMOKNZ]

I had a similar issue end of last season. Cleaned the carbs twice, cleaned both clutches, and aligned the clutch and RPM is back where it should be!