Clutch question

[Parker3865]

On my 250 I made a little adapter to take up the play. I have fitted it at the engine end.

Dimensioned drawing

Clutch Adapter.PNG (24.27 KiB) Viewed 8100 times

Hole drilled through the centre length.

A bit difficult to photo

20241027_clutch adapter.jpg (374.2 KiB) Viewed 8100 times

Not a very clear photo, sorry
A slot cut down its length to fit the inner cable through.

[Andy_C]

I was contemplating doing the same - because I have something very similar in one of my box's of odds and sods, might even fit with no modification.

Must have a dig around.

If not easy job to whip one up on the lathe.

[70sbikes]

When I was rebuilding the engine on my '76 3 1/2 Sport I broke the clutch basket and had to buy a whole 2nd hand clutch from Germany. So, I have a few spare steel plates. If you PM me your address I'll pop it in the post. It may take a little while to arrive, because I'm in Australia...

Trevor

[Andy_C]

Thanks very much for your kind offer - I am sorted now thanks to Steve Brown

[Steve Brown]

Thanks very much for your kind offer - I am sorted now thanks to Steve Brown

Yes-it went off via Royal Mail today!

[Andy_C]

Thankyou Steve - I shall look forward to putting it back together.

[Andy_C]

Steve - that CD you sent would not play, seemed a bit too thick to go into the slot in the player.

Anyway I decided to use it as clutch plate - neat packaging idea

It is all back together now, I made up a new end for the cable at the clutch end similar to the one shown further up this chain, I also noticed that there was a little of the cable inner (nylon or whatever) proud of the cable end so that was probably not helping.

Clutch arm is now set to 15mm as per the book.

Not tried it yet as I ran out of light, hopefully test it out tomorrow.

Many thanks.

[Andy_C]

Took it out for a short run this afternoon, certainly better that it was but is still very grabby.

I found a thread on this forum where Norbert posted up an image of the dished plate showing how you can check how much "dish" it has, that thread said that if the plate has lost a lot of it's dish it would contribute to the grabbiness.

I had not seen the thread when I had my clutch apart but I dont think the dished plate had much of a dish in it, think I will pull it apart and take a look.

[Steve Brown]

Yes, that was a Donny Osmond CD we just don't play anymore, I'm pleased the recycling of the case worked! As for the dished plate, yes it does help with the clutch action. Not sure how little dish is acceptable, but if you lay the dished plate over a plain plate the dish should be easy to see. Also, I think the manual or parts list shows it in the wrong position. I always fit that one first, so that the outer edge or rim of the dish is facing out towards you.

[Andy_C]

Steve - just literally read the thread about the dished plate, I fitted it IAW the manual, i.e. last in, it should be first in after the thiner friction plate.

You could certainly see that it was dished, I will compare it to the picture that Norbert posted up in one of the threads about clutches to see how much dish it has.

A job for tomorrow.

[BumbleBee]

Temperature seems to influence mine. It's at it's most friendly when the engine is cold and gets more grabby the more the engine gets hot.

[Andy_C]

Mine seems the same hot or cold.

Just to clarify re the "cupped" steel plate, it is the first steel to go into the basket with the "cup" facing inwards towards the hub, i.e the bottom of the cup is facing inwards and the top of the cup outwards.

[norbert]

I don't think that it's very important how you put the dished plate. I allways put it first together with the thiner friccopn plate
I' seen diferentes Status of the "dishing". The best ones That I've had: pulling down on one side, the oponend side raised about 10 mm

[norbert]

If I remember it well

This plate can make a big diference !!!
Normalerweise there is no wear at all of both types of the discs. The only delicate one is this one. ( or if the friccion planes fall apart)

[norbert]

Once I've tried to dish one of these plates that was nearly plane, on a pillow of sand an a rubber hammer with care and Patienten. The result was not that bad. But not sure if I mounted the plate