Five plates clutch

Dear All,
I mounted the clutch and got a result with which I will confront you.
I fitted in, 5 Barnett ferod plates and 4 steel standard plates plus the final thin plate.
Everything seems fine, but the thin plate is 3 mm below the limit of the teeth top.
Is this normal?
If not what i must do?
If I mount the 750 thick plate it  leaves out of 3 mm.
Ciao.
Piero

pierodn said:

Is this normal?
If not what i must do?

Click to expand...

Unfortunately, this is a question probably only you will be able answer as you need to measure the stack height (total thickness of all the plates) and the clutch drum depth to the diaphragm spring retaining groove and compare that data with the information given on the Atlantic Green website. http://atlanticgreen.com/clutchpak.htm
Your photo does suggest that the stack height is low, but the thick pressure plate is probably not the answer as the difference in thickness will be too great, so use the Atlantic Green information: http://atlanticgreen.com/ndnsclutch.htm to determine how much adjustment to stack height is required to give a light clutch pull action.

Or use the Old Britts method.
http://www.oldbritts.com/ob_clutch_info.html

I put new Barnett plates in the clutch yesterday evening, same combo, 4 new steel and five new friction plates. By adding one of my old steel plates in the back (.076 in), the stack,including pressure plate, still measured. 030 less than the Atlantic Green recommended number, however with the final pressure plate in the surface of the pressure plate was flush with the hub shoulder.
The result is a very easy clutch, can be pulled in with one finger. A stack height to the Atlantic Green number might fit in, (it would be very tight) and would likely be an even easier pull, but as it is the pull is plenty light. Any lighter increases the likelihood of clutch slip.
Is your thin plate a ground down regular steel plate? If so why not remove the thin plate from your pack and give it a try? Some dimension in your setup is obviously quite different from mine, however getting the teeth of the pressure plate just fully into the teeth on the hub seems a good starting point. If you take the thin plate out of the stack, will you acheive this? You might end up slightly below depending on the measurement of your thin plate.
It only takes a few minutes to put it together, then you can try the clutch pull to see if it is suitable.
Have you installed a Dynodave/Atlantic Green clutch pushrod seal? If not, you should, only takes a few minutes and cost is minimal. My old plates (no sealin place) had trans oil on them. The seal will keep the sticky trans oil out of the clutch.
Glen

Hi Glen,
I put 5 Barnett ferod plates and 4 steel plate more the thin pressur plate.
The whole steel combo (not Barnett) including chain wheel are all standard from 850 Commando.
Yes, i fitted a Dino Dave clutch seal.
But, i would understand, it need that the thin plate must be razed to teeth?.
Could i mount at beginning of the chainwheel another steel plate? (So to have five steel more thin plate?)
Ciao
Piero

Hi Piero

Yes, you could add another plate right at the back to act as a shim. That is what I did and the result was good.
The pressure plate on mine ended up very close to flush with the shoulder, or in other words, with the teeth just fully engaged in the chainwheel teeth.
This resulted in a super easy clutch pull(Venhill cable helps too), yet I can not make the clutch slip, so just what I was hoping for.
My stack height is just under 1 mm less than the amount recommended on Atlantic Green.

Glen

Well,
I will add a plain steel and will post a picture.
Ciao.
Piero