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Stiff clutch causing hand pains

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SpannerMonkey
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PostPosted: 22:21 - 28 Sep 2010    Post subject: Stiff clutch causing hand pains Reply with quote

I've been riding my NS125F for a number of days (Only got it last week) and the clutch is UNBELIEVABLY stiff. if you try pulling it in without stretching your fingers first then you end up with a sharp hand pain from trying to pull it. the clutch grips when about 3/4 released and it's not catching on anything...
Now I know a lot of teenage twonks like to fit aftermarket parts to lil two-strokes so I was thinking maybe someone has uprated the clutch springs? It returns fine and without effort. It doesnt feel like the cable is rubbing just like the springs are FAR too strong. Any ideas?
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herulach
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PostPosted: 22:29 - 28 Sep 2010    Post subject: Reply with quote

Try oiling the cable first, an oiler is only about a fiver from anywhere, and that might be the only problem
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Frost
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PostPosted: 22:37 - 28 Sep 2010    Post subject: Reply with quote

Return will be done by the springs, so it will return with ease if if the cable is binding pretty bad. Oil the cable, but be careful what you use as WD40 will make the nylon swell and make it even tighter. Engine oil would be good to use.

A new cable and making sure that the lever is the right size etc would be an almost certain fix. Chance of clutch springs being uprated are basically zero.
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SpannerMonkey
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PostPosted: 22:38 - 28 Sep 2010    Post subject: Reply with quote

herulach wrote:
Try oiling the cable first, an oiler is only about a fiver from anywhere, and that might be the only problem

It doesnt have any trouble at all returning though. I can feel that there is no resistance in the cable itself, cause it would resist both ways... It pulls back out really hard against your hand. I'd say it takes a good 50-60% of my grip strength to pull it in... It's about the same feeling as one of them grip strengthener things you squeeze
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Kickstart
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PostPosted: 22:43 - 28 Sep 2010    Post subject: Reply with quote

Hi

Suspect you might be right that it has heavy duty clutch springs in it. However if it has then that would probably disguise a cable on the way out as well.

All the best

Keith
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SpannerMonkey
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PostPosted: 22:46 - 28 Sep 2010    Post subject: Reply with quote

Kickstart wrote:
Hi

Suspect you might be right that it has heavy duty clutch springs in it. However if it has then that would probably disguise a cable on the way out as well.

All the best

Keith

Thankyou for your input. I'll try oiling the cable just so I can be certain it isnt that.. I have 2 whole other NS bottom ends to rob clutch springs from anyway if I need them Wink
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jpderv
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PostPosted: 19:54 - 30 Sep 2010    Post subject: Reply with quote

i have the same problem mate seems my clutch has just got heavy springs although if you just use the clutch to take off and change the gears without the clutch then itl save your hand thats what i have resorted to now cause was getting serious cramp in the hand lol
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flamegrape
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PostPosted: 20:23 - 30 Sep 2010    Post subject: Reply with quote

Quote:
Oil the cable, but be careful what you use as WD40 will make the nylon swell and make it even tighter.

I use WD40 to lube mine and it has worked better than ever. I can clutch with my fore and index fingers now whereas before it was a fist full of clutch.

Maybe it depends on the composition of the cable housing as to how it reacts with the WD40??
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pinkyfloyd
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PostPosted: 20:25 - 30 Sep 2010    Post subject: Reply with quote

Check the clutch cable isnt on the way out. Just before mine broke it got really stiff.

Only costs a few quid to replace the cable and its an easy job.
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Kickstart
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PostPosted: 20:27 - 30 Sep 2010    Post subject: Reply with quote

jonny2010 wrote:

Maybe it depends on the composition of the cable housing as to how it reacts with the WD40??


It does. It is the newer style cables with the nylon liners that can react with oil based lubes. The nylon expands and makes the cable tighter.

All the best

Keith
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Howling TerrorOutOfOffice
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PostPosted: 20:33 - 30 Sep 2010    Post subject: Reply with quote

Would adding a washer or two to the clutch springs lessen the amount of lever pressure?


Pat
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Kickstart
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PostPosted: 20:37 - 30 Sep 2010    Post subject: Reply with quote

Howling Terror wrote:
Would adding a washer or two to the clutch springs lessen the amount of lever pressure?


More likely to make the clutch heavier.

All the best

Keith
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Howling TerrorOutOfOffice
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PostPosted: 21:09 - 30 Sep 2010    Post subject: Reply with quote

I read the above mod on another forum. Damned if i can remember which one...Just spent 15mins looking for it. Sad
Upshot was it added preload which meant less lever travel.

[My clutch had 6 springs, it now runs on 4 and the lever pressure lessened]
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Kickstart
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PostPosted: 21:24 - 30 Sep 2010    Post subject: Reply with quote

Hi

Might reduce lever travel but not usefully as at best all it is doing is making the springs coil bound sooner. The plates still need to move apart.

For a lighter clutch (assuming no changes to pressure plates, etc) you want more lever travel through changing the lever ratio.

All the best

Keith
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dragstaar
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PostPosted: 21:58 - 30 Sep 2010    Post subject: Reply with quote

My Bandit had this exact same issue, and inner city driving is a pain. I thought the same thing, because mine returned okay, oiling it sorted it out
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Howling TerrorOutOfOffice
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PostPosted: 11:40 - 01 Oct 2010    Post subject: Reply with quote

I knew i'd seen it somewhere.
https://www.ducatiwiki.net/index.php?title=Lighter_Clutch

Pat
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MarJay
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PostPosted: 12:03 - 01 Oct 2010    Post subject: Reply with quote

I had a really really heavy clutch on my RD350 and on my KE100. On both, I replaced the cable and suddenly it was magically light again.
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Kickstart
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PostPosted: 14:18 - 01 Oct 2010    Post subject: Reply with quote

Howling Terror wrote:


That isn't putting a washer on the springs, it is using a washer to space out the stop for the spring and reducing the preload on the springs. Would work but (as mentioned there) might allow the clutch to slip more easily.

All the best

Keith
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Old Thread Alert!

The last post was made 16 years, 6 days ago. Instead of replying here, would creating a new thread be more useful?
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