Ducati John

0113 2829933     07746 175112

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Slave Cylinder/Clutch Springs

The old design of slave cylinder (fitted to pre 2001 bikes) wears badly leading to the unit drawing air in and ultimately loss of clutch action. A new seal usually cures things but the housing itself can wear too, so this might also need to be replaced. Alternatively the later, improved slave cylinder can be fitted, but this necessitates fitting of the later (longer) clutch pushrod.

Or, try one of the many "LARGE" piston type slave cylinders that are available. These reduce the lever pressure by approx 30%. I've fitted a few without problem. I run one on my own ST2 along with the lighter 900SS clutch springs, this gives a real nice light lever. Interestingly I know of a hard ridden 999S that has a "4 post" slipper clutch, i.e only has 4 springs. Now the correct springs for this clutch are heavier to counteract there being 2 less, with me so far. So this bike has 4 of the afore mentioned 900SS springs giving it the lightest lever I've ever known on a Ducati, more like a 125 moto-crosser. It runs sintered plate pack and there has never been a mention of slippage. Now I'm not saying you should all fit these springs as your fully laden two-up ST4S might leave you clutchless at the bottom of a mountain pass. However bikes with lighter use might get away with it. Its worth saying that the clutch pack thickness should be monitored too. Too long winded to cover here but the pack should be kept as close to its "as new" thickness by adding extra or thicker plain plates. If you have your bike serviced by me it is checked for you. I guess you can ring me if you're unsure though as its not fair to leave you wondering eh!




CALL: 0113 2829933 OR 07746 175112


 

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