How do I adjust the clutch at the lever? - Ducati.ms

bionicmotard · May 2nd, 2011, 11:52 pm

I'm sure this is here somewhere but after looking all over i'm not finding it.
I just got her back from the shop where they put a slipper clutch in, a new clutch pack and larger bore slave cylinder. It isn't easily going into neutral like it's skipping it when i'm taking it out of the garage at low rpm. I'm not great at explaining this i'm sure but it just seems like it needs the cable adjusted at the lever, I think. So could someone please advise. Thanks Its an 08 hyper non s.

Eric

Shift-Tech · May 3rd, 2011, 12:09 am

Go back to the dealer, something went wrong...

The adjustment on the lever does not do anything on how the clutch functions.

bionicmotard · May 3rd, 2011, 5:41 am

I'm positive if cable was a little tighter when I squeezed the lever it would work properly. That isn't an adjustment at the lever?

Rob998 · May 3rd, 2011, 8:25 am

The clutch is hydraulically, not cable, operated. There is no cable to adjust.

NYSport · May 3rd, 2011, 8:27 am

Quote:

Originally Posted by Shift-Tech

Go back to the dealer, something went wrong...

The adjustment on the lever does not do anything on how the clutch functions.

+1, take it back!

bionicmotard · May 3rd, 2011, 8:28 am

Quote:

Originally Posted by Rob998

The clutch is hydraulically, not cable, operated. There is no cable to adjust.

rats! so now that i've shown my age and lack of knowledge, how do I fix this. Could it be that It's just a really new clutch with no mileage or something is wrong. I went to a place in NYC and they went from reputable to scumbags. I don't think I can bring it back to them nor would I want to. The other Duc dealers went out of business. There's supposed to be one opening soon in Brooklyn but not yet.

Rob998 · May 3rd, 2011, 8:48 am

This can sometimes happen with the aftermarket slave cylinders. They work by having a bigger bore than the standard one so that less lever pressure is required to move the clutch pack. The downside of this is that whilst the lever stroke is the same length, the piston stroke is slightly less. Remember you are only shifting the same amount of fluid when you squeeze the lever, but it is acting on a larger surface area, so it can't move the piston quite as far as it did with the standard slave. Which is a long way of saying that your clutch plates aren't being moved apart as far as they used to be, causing a little drag & the difficulty in selecting neutral.

Possible solutions are:

Bleed the clutch system to make sure all the air is out of the system. Make sure the fluid is filled to the correct level.

Measure your clutch pack thickness, all the friction plates & plain steel plates when held together should measure 38mm +/- 2mm. If it's too thick it will drag & make neutral hard to find.

Try swapping out some of the new plates for your old ones if you still have them, it might just give you the extra clearance you need.

You can get thinner plain steel plates which would help with the clearance.

bionicmotard · May 3rd, 2011, 8:53 am

Quote:

Originally Posted by Rob998

This can sometimes happen with the aftermarket slave cylinders. They work by having a bigger bore than the standard one so that less lever pressure is required to move the clutch pack. The downside of this is that whilst the lever stroke is the same length, the piston stroke is slightly less. Remember you are only shifting the same amount of fluid when you squeeze the lever, but it is acting on a larger surface area, so it can't move the piston quite as far as it did with the standard slave. Which is a long way of saying that your clutch plates aren't being moved apart as far as they used to be, causing a little drag & the difficulty in selecting neutral.

Possible solutions are:

Bleed the clutch system to make sure all the air is out of the system. Make sure the fluid is filled to the correct level.

Measure your clutch pack thickness, all the friction plates & plain steel plates when held together should measure 38mm +/- 2mm. If it's too thick it will drag & make neutral hard to find.

Try swapping out some of the new plates for your old ones if you still have them, it might just give you the extra clearance you need.

You can get thinner plain steel plates which would help with the clearance.

WOW! thank you so much for taking the time out to help me. I'm going to try bleeding the system. The plates are Ducca Bike and I've only heard good things. I can't ride it because I'm hurt so I wonder if that would clear itself up if it was ridden. I'm going to try the bleeding it and i'll report back. (it sounds good, saying that i'm going to do it just means i'm going to call someone to come do it.) sounded good. Thanks again.

Rob998 · May 3rd, 2011, 8:58 am

You're welcome, good luck with it!

bionicmotard · May 3rd, 2011, 9:00 am

Does it make a difference that it's a slipper clutch?