Thick pressure plate, way too thick! My confusion.

Re: Thick pressure plate from RGM way too thick!

From the top of the clutch pack to the deck where the clutch diaphram rest is .196". Instead of cutting down the surface which goes against the clutch, I decided to cut the outside that faces the diaphram retaining the anodized face to clutch. This is of course a little more intensive but well worth the extra effort. With the calculations, I needed to cut .080" off to bring it to flush with the top. Spring went on fine and a pinky pull clutch is attained.
This does beg the question that if it pulls this easy, might it slip under load? Well, we will just have to wait and see. I can easily bring it down some more so that the diaphram is a bit more loaded at rest.
Thank you all, especially LAB, for your inputs. It is alway a confidence builder to receive info from true Nortoneers.

I'm wondering if the same result could be accomplished by purchasing one of the shim plates OB sells to bring the clutch stack height to the spring without the usual space that is encountered, resulting in pulling the extra empty space with the clutch lever. Other than having a lighter aluminum pressure plate of course. How much does aluminum improve things? The price is not much different either way.

Actually my clutch is not bad in its original 4 plate and thick pressure plate configuration, but there is a bit of slop when I compress the diaphragm to put the spring in so I'm assuming it could be improved?

Dave
69S

I believe that another plain plate would have achieved basically the same results. The single piece of aluminum is nice. I am not ruling out the extra plate option til I have test my current solution.

I've got the standard 750 clutch but with an extra plain steel plate in. It's been that way for years & works fine. It improves the clutch action & when the clutch plates are clean there is no clutch slip. Mine now has belt primary drive & clutch runs dry, but when I used triplex chain & oil in the primary, I had to strip clutch down every few thousand miles & wash the plates clean. I had to do that with or without the extra plate or endure clutch slip. Was ok up to about 70mph but then it just wouldn't go any faster as the clutch was slipping. The extra plate is a cheaper option than the fancy pressure plate & the steel plates never wear out.

Ian..