Clutch Woes - Seeking a solution

[muzzza]

Clutch set-up will always come back to bite you if not done correctly.
Pedal travel.......pedal ratio........clutch fork ratio......clutch travel + clearance......and master / slave cylinder volumes.
A bit of simple geometry and you are all done .

One small point not mentioned so far has been cylinder pus-rod alignment. If master cylinder / slave cylinder push-rods are not within a few degrees of straight, compression force when you push in the clutch, forces the cylinder piston assembly sideways within the bore and the alloy cylinder will gall very quickly. Pedal pressure will go up dramatically and you may see a black residue start to form. ( alloy and oil......even swarf ? ) Precise measurements will fix everything. Good luck. Murray

[jhv48]

What has been previously stated is true. If master and slave are appropriately matched, then it is the leverage of the clutch pedal on the master cylinder. My SPF has three holes on the clutch pedal to move the rod up or down. Moving it up reduces clutch effort but also shortens the stroke of the master cylinder. Moving it one notch down increases both the effort needed to depress the clutch and the length of the stroke..

You need to balance the three parts correctly in order to implement smooth clutch action. Continue your efforts in this area and you will solve the problem.

If you move the mounting point up on the pedal, you might need a larger master cylinder in order to pump enough fluid with the shorter stroke. Like I said, a balancing act.