wet clutch to dry clutch slipper conversion

Started by MotoCreations, January 28, 2009, 01:47:17 PM

Previous topic - Next topic

caperix

Quote from: Duck-Stew on January 31, 2009, 05:04:47 PM
Small cased Ducati engines are only designed to get wet-clutches so therefore, converting it to a dry clutch is NOT the same as converting a large cased Ducati engine from a wet to a dry clutch.

Large cased engines (no order)
900
748/916/996
998
749/999
1098/848
DS1000/DS1100

Small cased engines (no order)
400
600
620
695
696 (?)
803
750

And a BIG +1 to the hassle comments on coversion and the 'not worth the $$$' comments as well.  But, even with that said and admitted...I'm still building another 750 with a dry-clutch for my Cafe-Racer.  (actually it'll be an 885cc motor)

Stew, sorry for keeping this issue alive.  Being the owner of 2 wet clutch Ducati's, although not planing on converting either of them, this has peaked my interest.  Could you please elaborate on wear the problem lies, as you have first hand experience with it.  Looking at the hot rod 750 it looks like the case off the wet clutch bike bolted on with out any visible modifications, is it that the transmission input shaft is a diff, size/length/spline count?

Duck-Stew

Quote from: CowboyBeebop on January 31, 2009, 05:09:28 PM
I didn't know there was a difference in cases.  What makes a case "large" vs. "small"?  Are they actually significantly smaller or larger dimmensionally? 

Large case motors have deeper oil sumps and the transmission shafts are spaced differently so a big trans won't fit a small case.  The two mounting points are the same obviously.
Bike-less Portuguese immigrant enjoying life.

Duck-Stew

Quote from: caperix on February 01, 2009, 05:51:27 AM
Stew, sorry for keeping this issue alive.  Being the owner of 2 wet clutch Ducati's, although not planing on converting either of them, this has peaked my interest.  Could you please elaborate on wear the problem lies, as you have first hand experience with it.  Looking at the hot rod 750 it looks like the case off the wet clutch bike bolted on with out any visible modifications, is it that the transmission input shaft is a diff, size/length/spline count?

The clutch side covers do swap and you will have to change the primary gear set with a dry-clutch one so externally...it looks like it just 'bolts on'. 

It don't.  MANY differences between the transmission input shafts and the bearing spacers, and the.....well....lots of little things really.
Bike-less Portuguese immigrant enjoying life.

caperix

Quote from: Duck-Stew on February 01, 2009, 08:13:56 PM
The clutch side covers do swap and you will have to change the primary gear set with a dry-clutch one so externally...it looks like it just 'bolts on'. 

It don't.  MANY differences between the transmission input shafts and the bearing spacers, and the.....well....lots of little things really.

Thanks for the reply, other threads have speculated about what the differnece is but this is the first time I have seen it in writing.

Kopfjäger

#19
Quote from: toaster on January 30, 2009, 08:13:43 AM
i was hoping there was something amazing that happened.  i would pay reasonably big bucks to have a dry clutch on my 800.  i was excited about being able to have the dry clutch when i bought the bike, but i didnt know.  oh the torture!!


Just do it to your bike.

Woohoohoohoo! Two personal records! For breath holding and number of sharks shot in the face.

Speeddog

- - - - - Valley Desmo Service - - - - -
Reseda, CA

(951) 640-8908


~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

Kopfjäger

#21
Quote from: Speeddog on February 02, 2009, 10:20:17 PM
Better put an oil filter on that.  ;D




Woohoohoohoo! Two personal records! For breath holding and number of sharks shot in the face.

Raux

Reviving a thread.

Kopfjager. can you provide a parts list?

Stu, can you give me things to look for?


Kopfjäger

Quote from: Raux on September 11, 2010, 10:43:17 PM
Reviving a thread.

Kopfjager. can you provide a parts list?

Stu, can you give me things to look for?



Seriously bro, find a donor 1100 motor.
Woohoohoohoo! Two personal records! For breath holding and number of sharks shot in the face.

TAftonomos

Can I convert my dry clutch S4Rt into a wet clutch....just because? [laugh]

Duck-Stew

Quote from: TAftonomos on September 12, 2010, 01:10:37 PM
Can I convert my dry clutch S4Rt into a wet clutch....just because? [laugh]

Yes.  It's easier than the other way around...
Bike-less Portuguese immigrant enjoying life.

Raux

#26
seriously?

is it because the 696 is the small case?

there have been small case stock dry clutches right?


Speeddog

Quote from: Raux on September 12, 2010, 07:24:35 PM
seriously?

is it because the 696 is the small case?

there have been small case stock dry clutches right?



The 696 is a small-case motor.

AFAIK, there haven't been any dry-clutch small-case motors in a production Ducati.
There's other folks here that know the history better, so YMMV.
- - - - - Valley Desmo Service - - - - -
Reseda, CA

(951) 640-8908


~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

duccarlos

Throwing gas into this fire... where does an S2R1000 fall into all this?
Quote from: polivo on November 16, 2011, 12:18:55 PM
my keyboard just served me with paternity suit.

duccarlos

And in better terms, is it possible to swap that dry clutch from an 1000 to 800?
Quote from: polivo on November 16, 2011, 12:18:55 PM
my keyboard just served me with paternity suit.