Clutch Drag

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rvich

rvich

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While I had the primary apart I inspected the clutch plates and cleaned everything up. The metal plates in in pretty good shape but by marking the sides with a felt tip pen and then rubbing them on fine sandpaper I was able to determine they are not completely true. I decided to run them for a while and see how the clutch felt.

Now that I have the bike out tearing up the road the clutch feels good but when everything is good and warm I can put the bike on the stand and the rear wheel will rotate from the clutch dragging. If I grab the wheel with my hand there is no real pull there. How normal is this? Am I expecting too much out of a mutli-plate clutch to think there wouldn't be some rubbing going on in there when in neutral? Trying to adjust this out has gone too far the other way in a hurry.

I am also running the black fiber plates with what looks to be aluminum for centers.

Thanks,
Russ
 
rvich said:
While I had the primary apart I inspected the clutch plates and cleaned everything up. The metal plates in in pretty good shape but by marking the sides with a felt tip pen and then rubbing them on fine sandpaper I was able to determine they are not completely true. I decided to run them for a while and see how the clutch felt.

Now that I have the bike out tearing up the road the clutch feels good but when everything is good and warm I can put the bike on the stand and the rear wheel will rotate from the clutch dragging. If I grab the wheel with my hand there is no real pull there. How normal is this? Am I expecting too much out of a mutli-plate clutch to think there wouldn't be some rubbing going on in there when in neutral? Trying to adjust this out has gone too far the other way in a hurry.

I am also running the black fiber plates with what looks to be aluminum for centers.

Thanks,
Russ
Click to expand...

How many bikes don't do this? I think any with a wet clutch will. Certainly all old bikes I've ever had would.
 

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I reckon the drag causing the rear wheel to spin is the friction between the main shaft and and sleeve gear bushes, and is quite normal.

Cash
 
cash said:
I reckon the drag causing the rear wheel to spin is the friction between the main shaft and and sleeve gear bushes, and is quite normal.

Cash
Click to expand...

Isn't it just drag from the oil on the plates?
 
swooshdave said:
Isn't it just drag from the oil on the plates?
Click to expand...

It can also happen if the gearbox is in neutral with the clutch lever released, especially if the gearbox oil is cold and thick, in which case, it won't be clutch drag making the rear wheel rotate-as with the lever released the clutch plates are fully engaged, so must be either friction or "oil drag" from the gearbox.
 
yep, rz7171,
My home turf.
Taken this morning.
Beauty shots for my webpage and the NOC Calendar.
Been here?
Make contact next time.
J dogg
 
OK ,thanks for the replies...
I expected as much, but then you never know for sure unless you ask. Surfdog...how do you keep the pipes so pristine...I think you would have some color on those from riding it!
LOL,
Russ
 
Yo RV,
Just finished the bike.
That may explain why each thread I post in has a picture of my baby! LOL hahahah.
3 months of tweeking, finding, choosing and fitting parts.
Polishing and more polishing.
But I do have about 120 miles on her now since pipes went on.
They were nearly the last thing before painted parts went on.
Near the head they show a tiny bit of straw color.
She'll never be my daily driver anyway what with all the rain we get and 5 other vehicles to choose from (including wifeys MKX).
That picture was taken THIS Morning!
So yeah she's fresh as a daisy and roaring to go.
I get off work in about a 1/2 an hour and will ride another 60 miles to see if I can hit the reserve.
Fingers crossed on keepin me pipes pristine pipes.
Surf.... out!
 
L.A.B. said:
swooshdave said:
Isn't it just drag from the oil on the plates?
Click to expand...

It can also happen if the gearbox is in neutral with the clutch lever released, especially if the gearbox oil is cold and thick, in which case, it won't be clutch drag making the rear wheel rotate-as with the lever released the clutch plates are fully engaged, so must be either friction or "oil drag" from the gearbox.
Click to expand...

Yeah...I guess I shoulda put that together! Thanks again...
 
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