I have a 2001 carbed R1 engine in my MNR and although the clutch works as it should i am finding it hard to get consistant with the all most on off operation of a bike engine clutch ie very little progreshion.

A thought i had open to discussion.

If i got another clutch lever and exstended it would that give more pedal movement and more progreshion on the biting point?

I am sure i have seen somewhere on here it had been done

Thanks

Has the engine been sitting for a while? If so give it some time before making any changes. The plates stick together during storage and it often takes a little running in before they unstick. If in doubt get it to 40mph, put down the clutch then stamp on the brakes. Should unstick any reluctant discs....

Exactly the same problem I had. I cut the lever part off and made a new one 3/4 of an inch longer and welded it on inplace of original. Now works very well and a lot more progressive.

Hi BenB

The clutch works fine,i think it is the genral way a bike clutch works.

If you were on a bike the clutch lever would only move about 10mm between bite point and fully engaged,using your hand it is more sensitive to the movement.
With your foot it feels like a couple of mm between bite point and fully engaged,i find it difficult to have such a light foot.
I do have the Barnet type uprated clutch spring fitted as well.
My clutch pedal has about 4 inch of travel and about 10mm of that is operation half way up the range.

Hello Stuart G
Have you got any pics of the mod?
Sounds like exactly what i was thinking

reverse clutch arm

quote:

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Originally posted by sonic
Hello Stuart G
Have you got any pics of the mod?
Sounds like exactly what i was thinking

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I have used a "pull" wilwood slave and a 0.75 wilwood master cylinder on the Motaleira. (wilwood pedal set)
I removed the freeplay from the clutch arm. This is only there to help your hand on a bike gain some mechanical advantage before getting to the biting point. I added another lever arm with 67mm hole centre from the clutch pivot. The original arm is left as it attaches to the return spring.The slave has a travel of 34mm.
My clutch pedal is quite soft but has a long travel. I hate heavy clutches in traffic.
Not had a chance to drive it yet. I need to setup my gear indicator/veypor before I put the driveshafts in.

Different engine, but might give you some ideas



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[Edited on 2/3/2009 by nitram38]

I ditched the bike clutch MC and replaced it with a random brake MC that STM had knocking around....

Works very nicely (although I think I've fried my clutch. again).....

Here is the pic.
Not brilliant but you get the idea.
Rescued attachment Clutch lever on engine..JPG

Thanks for all the pic's guy's that gives me some ideas.

Thanks again