ciao a tutti -

just got a ducati clutch pack (19020111A), and noticed that all the flat plates (including the convex plate) have a semi-circle punch on the outer edge.  is this some sort of alignment marking that needs to be positioned specifically in the clutch hub on assembly? 

i ask this, as there is NO mention of this in the ducati performance/bucci (strada) slipper clutch assembly instructions, nor anywhere else i have searched.

hoping that someone here will know, and can advise.

a presto,
johnc

As far as I know, there is only the 2nd steel plate, w/ the dot, that is critical. The first 2 plates in are steels, and it should be installed with the dot facing out (towards you) when changing packs, then the first friction plate. Otherwise, you can just toss the rest of 'em in there.

If it makes you feel better, you can always face them all the same way.

Edit:

I just re-read that... slipper, eh? Hmmm..... Considering the rum & cokes are working their wonderful "make me forget about work and all of the SOMA crazies I had to deal with today" magic, I'm a bit IZ_ on the plate order of a slipper at the moment.

Although, I do recall seeing the same semi-circle notch before (Tigre likes to change packs frequently ), and it never really made a difference how they went in.

grazie dan -

yup ... the plates have a semi-circle "notch" stamped out of the outer edge on all the plates.

another duc mechanic advised that these notches do not need to be aligned with anything, and as long as i install them with friction plate first into the hub, and the convex plate second, then alternate friction to non-friction and end up with two non-friction plates furthest out, i am good to go.  i also measured the stack height, and it is at 36.50mm, so should be groovy.

back to rum and cokes for you my amico.

a presto,
johnc

Tigre is the local resident for Ducati slippers.  He's running a stock slipper in his 749R and has tried other brands.  He checks/changes his clutch at least twice a race weekend.  Shoot him an email or call him if you have questions

Quote from: Spidey on November 08, 2008, 09:40:00 PM
Tigre is the local resident for Ducati slippers.  He's running a stock slipper in his 749R and has tried other brands.  He checks/changes his clutch at least twice a race weekend.  Shoot him an email or call him if you have questions

grazie spidey.

BTW: I run a Yoyodyne slipper now.

Quote from: tigre on November 10, 2008, 01:43:18 PM
BTW: I run a Yoyodyne slipper now.

better than the bucci / dp slipper?

Does the bucci use bearings?  The stock Ducati slipper clutch in my 749R was ramps-only.  I didn't like that as much as bearings+ramps.

Quote from: tigre on November 10, 2008, 04:32:17 PM
Does the bucci use bearings?  The stock Ducati slipper clutch in my 749R was ramps-only.  I didn't like that as much as bearings+ramps.

Not to threadjack or anything. Are you running the 45 deg ramps or 35? I know they're diff between the SBK and Monsters but wanted your overall impression of it as I'm fairly sure I'm gonna go with the Yoyodyne on my RS.

I'm not sure if it's 45-degree or 35-degree...

It's the 'standard' one -- whichever that is.  I can take a picture when I rip everything apart.

I love love love this slipper.  The ramp-only Ducati slipper gave me a lot of grief.  When I switched to the Yoyodyne, that all went away.

Quote from: tigre on November 10, 2008, 04:32:17 PM
Does the bucci use bearings?  The stock Ducati slipper clutch in my 749R was ramps-only.  I didn't like that as much as bearings+ramps.

the bucci has ball bearings for the ramps.

My aluminum Surflex clutch pack had the same half-circle punches on all the steel drive plates.  I asked around and was told that they are used for manufacturing of the plates and serve no other useful purpose.  Nonetheless, I staggered them evenly during assembly in proper OCD fashion.  Here's a pic of the top one in my ball & ramp slipper.

BK