Ducati Monster Forum

hello folks,

time to change my clutch plates. the PO installed a yoyodyne slipper clutch but never installed slipper plates. i figured i'd run with this set and change over to the slipper plates when they're worn. so now it's 10k mi later and 2 trackdays and i started feeling them slip recently.

any recommendations and links? i checked the yoyodyne site and they have a set but out of stock/back order.

You can use any 12T plates. Sintered plates work good with that clutch - Ducati has several options. I've used these and they work well: http://www.ducatiperformance.com/ducati-performance-complete-clutch-plates-p-263.html (http://www.ducatiperformance.com/ducati-performance-complete-clutch-plates-p-263.html) but they are a bit pricey.

I also like these STM plates: http://www.desmoworks.com/index.php?main_page=product_info&manufacturers_id=3&products_id=86&zenid=93a68d22b8aff1255c91cd28def06b43 (http://www.desmoworks.com/index.php?main_page=product_info&manufacturers_id=3&products_id=86&zenid=93a68d22b8aff1255c91cd28def06b43)

hey desmoworks,

thanks for your reply...
the sintered plates might be best for mostly track use vs street/track use with the standard plates...no?

not really sure how the slipper works but are you saying the slipper function works with "standard" plates?

or are there special "slipper" plates?

There are no special slipper clutch plates... just clutch plates of different materials. I know a lot of people that use OEM superbike plates with their slipper clutches as they are pretty cheap and they are aluminum.

I used to use sintered for street and track - but I don't ride street anymore... just track. I like the way sintered feel, but that is personal preference.

Fred a Yoyodyne is a very helpful fellow.  Drop him an email and you should get his thoughts in pretty short order.

We use the MW "Slipper" Clutch Plate Kit (http://www.motowheels.com/italian/myproducts.cfm?parentcategoryid=442%7CDucati&productID=6058&showDetail=1&categoryID=467|Clutch%20Assemblies%20%26%20Parts%2D%20Slipper&vendoridtodisplay=0&filterFor=&collection=168%7CEuropean%20Motorcycle%20Parts). It is has more plates so you can tune the amount of slip and it comes in various thicknesses so you can really fine tune the stack height.  They are aluminum with a carbon material. you can also use the BARNETT "Ducati" Clutch Plates  (http://www.motowheels.com/italian/myproducts.cfm?parentcategoryid=442%7CDucati&productID=2941&showDetail=1&categoryID=444|Clutch%20Assemblies%20%26%20Parts&vendoridtodisplay=0&filterFor=&collection=168%7CEuropean%20Motorcycle%20Parts) but they are a little short stack hieght for some slippers--so you might have to supplement the stack with some old plates.

-M

The Barnett red material plates work well and are a lot cheaper than OEM and most others.  Like about $160.  You can get a set of three extra plates of varing thickness to adjust the stack height as required.  Many vendors carry them. Ca-Cycleworks has em and so does Fred at Yoyo and both Chris and Fred are very helpful and a wealth of info.

LA

I'm using Surflex plates and fibers in my slipper, really happy with it.

+ to moto [thumbsup]

thanks for all the input everyone  [thumbsup]

so i've had no luck contacting the previous owner. when i bought the bike, which i got from pro italia, i was able to reach the PO and get a little history on the bike. he told me that i have a yoyodyne slipper clutch but he didn't have it engaged. it does indeed seem to be working like a standard clutch as i've pop started it before. but i wanted to talk to the PO to ask him what he did so i'd know if there was a part missing or a part he's custom installed that i should remove so i could use this clutch as intended. from what the peeps at pro italia and himself have said is that he rebuilds and restores vintage motorcycles so he does know a thing or two about fixing bikes.

does anyone know how one can "disengage" the slipper function on a slipper clutch. Speeddog contacted Fred from yoyodyne and fred didn't seem to know how the slipper clutch could be disengaged. speeddog and i are curious to know as i'm trying to make a decision on which plates to use. is it just a matter of the amount of plates being used? is there a bypass hole where one could put a bolt or something to disengage it?

It might be the pressure plate is from a standard clutch.  I think the standard plate has teeth to engage the hub and a slipper pp does not.

IIRC, it's got the slipper-style pressure plate.

But when I had it in the shop, I wasn't looking at it closely enough to say absolutely for sure.

I strongly suspect that if it had a regular pressure plate with the slipper hub 'active', it would grenade.

Does anyone know for sure if there is a difference between the Pressure Plates for a slipper and a regular clutch?