ES2 clutch plates

Previously barry_carson wrote:

Hi i have renewed my clutch plates there are now 4 friction and 5 steel plates. 2 clutch plates less in the basket than there was . just wondering if the pressure would be the same on the pressure plate as the three bolts just tighten up with no adustment. ( laydown g/box ) i could sneak another steel one in to add more tension on the clutch or would that cause any problems. thanks Baz

I've just done the same and can't get the extra two plates in. I'm reliably informed that this is standard and once the friction plates bed in you add the additional plates.

regards

The problem you might come across, with fewer plates, is giving sufficient loading on the pressure plate. Getting this loading correct so that the springs are not too soft or do not get coil-bound could be challenging.

As suggested 'half-way house' solution is to put one extra plate in the stack, doubling up one of the sections. It is best to use a friction driver plate, ie one with the inserts or bonded pads, as the tang ends will not clash with those from other plates.

The most important point about renewing clutch plates is never to mix old with new. Otherwise the whole basket will slip from day one.

Baz, you say youhave a clutch that has no studs onto which you can wind on the springadjuster nuts that the later clutches have. I had your same problem and did a temporary fix by adding packer washers into the spring cupsto the same thicknessof the two missing plates. This way, by fitting different thickness washersyou can do a bit of fine tuning of the spring tensions so thepressure plate, when lifted,will run true.You can alsoconvert the hub to the later style by fitting the studs with the adjuster nuts. The clutch spring studs and spring adjuster nuts are in the NOC shop,..... a worth while modification.

Just adding, ... a set of new springs (NOC shop) alsowould not go astray, since you have replaced the plates.

Paul

In my notes I see the friction plates I took out in 2005 were 4 number at 4.5 mm thick each. The new ones are 5 number at 3.5mm thick. 'Proper Norton ones' said Russels. Total stack was 1.15 ins and is now 1.25 ins.so bolts are 1/10ins tighter.Might be of interest.