Ducati Sporting Club UK
 
 
Thread Tools Search this Thread Display Modes
  #1  
Old 05-Mar-2013, 21:26
spurs spurs is offline
Registered Forum User
Bikes: 999s and 955i Daytona
 
Posts: 17
Join Date: Feb 2013
2004 999s clutch cylinder

Hi All ,
As frequently stated the clutch is a bit on the heavy side particularly as its a hyd. unit .
Are there any alternatives to ease this problem ?
I have seen the oberon unit are there any other options ?
Quote+Reply
  #2  
Old 05-Mar-2013, 22:05
Ghost's Avatar
DSC Member Ghost Ghost is offline
DSC Club Member
Big Twin
Bikes: Ducati 749, Phil Read Replica, DD 620
 
Posts: 1,830
Join Date: Mar 2008
Mood: 2011 DD Class 'B' Champion
Quote:
Originally Posted by spurs
Hi All ,
As frequently stated the clutch is a bit on the heavy side particularly as its a hyd. unit .
Are there any alternatives to ease this problem ?
I have seen the oberon unit are there any other options ?

Have a look here, http://www.motopike.com/

I use one of their slaves on my 620 DD bike.
Quote+Reply
  #3  
Old 06-Mar-2013, 23:56
spurs spurs is offline
Registered Forum User
Bikes: 999s and 955i Daytona
 
Posts: 17
Join Date: Feb 2013
Thanks , i will get one shortly (as soon as the mrs has got over me getting the bike ) unless anyone has a better supplier .
Quote+Reply
  #4  
Old 07-Mar-2013, 02:07
skidlids's Avatar
DSC Region Organiser skidlids skidlids is offline
MotoGP God
 
Posts: 18,274
Join Date: Apr 2002
Mood: Its ONLY a Bike Club
Quote:
Originally Posted by Ghost
Have a look here, http://www.motopike.com/

I use one of their slaves on my 620 DD bike.

Seconded
I've had one from Adam on my 1100 Monster for a couple of years now and if it wasn't for how light it makes the clutch feel I wouldn't be able to run the short levers


Checkout the Desmo Due Paddock on Facebook
Quote+Reply
  #5  
Old 07-Mar-2013, 03:44
Shazaam!'s Avatar
DSC Member Shazaam! Shazaam! is offline
DSC Club Member
Big Twin
 
Posts: 1,167
Join Date: Nov 2001
The most common way to reduce the clutch lever pull force is to change the diameter of the slave cylinder. The force-reduction aftermarket slave cylinder replacements offer around a 20% reduction but at the penalty of needing a longer clutch lever pull to get full disengagement.

Another approach to reduce pull effort is to reduce the force pushing the plates together. One way is to change the stock springs to ones having a lower stiffness. Another way is to reduce the number of springs from six to four. This gives a one-third reduction in lever pull as well as a one-third reduction in friction force in the clutch. Depending on the particular bike’s torque output, you might get slippage, but reports from owners say this approach works fine.

At least for awhile ...

Keep in mind that the force between the plates is determined both by the number of springs and the spring preload. Since preload is determined by the stack height, as the clutch friction plates wear the overall stack height decreases and consequently the force between the plates decreases.

So, decreasing your clutch lever force by removing springs will work for a new clutch but as the plates wear you will experience slippage (and accelerated plate wear) and it's likely that you'll have to put them back in to get full mileage out of your clutch. The best way to test for clutch plate slippage is to apply full throttle power in top gear.
Quote+Reply
  #6  
Old 07-Mar-2013, 11:03
spurs spurs is offline
Registered Forum User
Bikes: 999s and 955i Daytona
 
Posts: 17
Join Date: Feb 2013
Some aftermarket companies offer different diameter slave cylinders , what is the std one ?
Quote+Reply
  
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes
Postbit Selector
Switch to Vertical postbit Use Vertical Postbit

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Recent Posts - Contact Us - DSC Home - Archive - Top
Powered by vBulletin 3.5.4 - Copyright © 2000 - 2024, Jelsoft Enterprises Ltd. - © Ducati Sporting Club UK - All times are GMT +1. The time now is 17:22.