New clutch, weak off the line By rosiemoto (Read 354 times)

[rosiemoto]

I put in a new clutch and it's super smooth off the line, but it's also WEAK off the line as if I'm on a 50cc instead of 150cc. If I go WOT from a standstill, it revs up to only about 3.8k, stays there for 2-3 seconds, then it will finally accelerate normally. It's almost to the point I feel like I have to help push the bike with my own feet to get it going. I put in my original (6 year) old clutch as a test and it's strong off the line again, and "clutches" only for half a second, which is muchhh nicer. Is this because my old clutch's contra spring is looser and lets the clutch "grab" sooner?

I notice my new clutch has much wider pads; does that affect this too, or would it only be that contra spring? I'm under the impression I could swap the old contraspring over to the new clutch, and that would make the new clutch grab much quicker like my old one does?

[Alleyoop]

You may want to change the CLUTCH pad springs, those are the ones that act on the pads. If strong then you need more rpms to create more centrifugal force to have them thrown out and grab the bell.
The contra spring is for closing the clutch pulley to push the belt up high. The stronger the contra spring also effects the RPMS required to open the pulley so the belt drops down for more speed.

So you may want to change out BOTH the clutch pad springs and the contra spring from the old clutch to the new one.
Alleyoop

[rosiemoto]

Ah, got it! Thank you Alleyoop!