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[Norm]

Simon, I think I have a beautiful clutch, I haven't ridden it yet but so far it is perfect, frees up easily with only half the lever travel, push rod has no weight on it and is as light as a feather to operate even though I have fitted 9 springs to it. If it doesn't slip it will be magnificent and if it does it will be fairly easy to add a bit more pressure. Secret is being able to even out the pressure and prevent the pressure plate from flexing and I think I have achieved this. This could fix all the dodgy Enfield clutches out there if it works, easy mod for anybody to do and not expensive

[simon]

Excellent Norm. Hopefully the ride will prove just as good. It occurred to me because the clutch on my 51 Bullet was so nice and the Madras one so nasty and other than the flexing cover which I sorted the only real difference was the friction material. The additional clearance because the cork plates are thinner reveals why the whole clutch was designed the way it was.

[Norm]

Hi Simon, bit of an update,I had to go back to 6 heavy springs and 3 light, clutch is still easy enough to operate, little bit heavier than with the 3 light ones in it. Still slipped going up a hill and wanting to get past a car in third gear but apart from that it seems fine. Is it better than the Barnett plates? not really sure but at less than half the price I paid for the Barnetts,it is much better. Being Sunday of a long weekend there was little traffic about but I think I could probably select neutral when stationary but because it is so easy to get neutral I didn't bother trying. Apart from that, bike is performing very well so I am happy, primary needed looking at because it is a couple of years since I had had a look and I have done quite a few miles in the last couple of years. Getting back to your original problem Inters have a breather on the inner primary case, I can't remember if the other twins have one, I don't think so, from memory not the ones I have worked on

[Norm]

Jury is out on this clutch, 9 heavy springs is too much, 6 heavy and 3 light and I'm getting a bit of clutch slip, guess I will have to live with a bit of slip under acceleration. I will try some spacers under the light springs see if that improves it

[Leon Novello]

Confucius say," many heavy springs cause many cable break".

[Norm]

Leon all depends on the thickness of the plates

[Norm]

I now have a good clutch, cork plates help, not sure, but due to the fact they are thinner it meant a lot of fiddling with springs but eventually I settled with 6 heavy springs on the outer rim and 3 light springs on the inner with 3mm spacers under them and now it changes easily, can pick up neutral no problems and it doesn't slip or drag, wonder how long it will stay like this

[simon]

I think you'll find it lasts a long time Norm. Mine has shown no signs of degradation (despite being in a small explosion). I was worried that the Interceptor might be too powerful a machine but I see that the original parts manual has H89K cork plates for all but one on the Mk1. The thinness is clearly a huge advantage as it puts the sweet spot for the actuator back in the centre of adjustment. I also think that the stuction of the cork is less meaning that it clears a lot quicker and more cleanly.

[Norm]

Simon, slip was the only problem I was having with my Inter and a friends is having the same problem with his, this is why I had to see if I could come up with a fix. The advantage with the cork plates is, because they are thinner, I have been able to play more with the spring tensions so that I could get a balance between slip and drag and by adding the extra 3 springs, with reduced tension on all of them and getting a more even spread on the plate it seems to be working well

[seen some changes]

Here are a few photos taken a couple of years ago in France on a rather hot day ,we had been riding for a while and during a cafe break I had noticed a bit of smoke from the engine but thought it was usual given the heat of the engine. However after we set off there was a deep whoof from under the tank and a large amount of smoke, bit unusual was my first thought but the second time after a few seconds I decided to investigate.


We put the heaviest oil available from a local garage and proceeded another 60 miles to the rally site where after a couple of calming beers I stripped the casings off to find this. Photos show what was drained out of casing and the new parts next to the remains of the old