Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 999 / 749 > Clutch spider spring failure

[nelly]

david, they should work fine. I've not been at work today, and all my efforts yesterday proved fruitless. I should have loads of the bloody things next wek tho.................
If you can take up either of the guys offer of a borrow, or you want me to replace theirs, then take them up on the offer. It'll be your best chance for the weekend. We can sort the detail next week.

[keefer]

went round to help Everton today
dropped in the new spider spring cleaned all the plates
but no joy still slipped badly

Keith is right, still slips

Do you have a set of 12 tooth STM plates Nelly, the part no & description is;

003PD001 Evoluzione racing clutch disc set 12 teeth for STM clutch code 003MG001

Will try changing the plates next as one of them may be warped.

[Edited on 9-6-2005 by everton]

[Felix]

Actually, I am not surprised by that. I run a whole race with a broken spider spring. The spring gets compressed so much that a break in the ring part of the spring won't affect it too much usually. Still, you need to replace it obviously.

More likely, your clutch pack height was on the lower end of the scale to begin with and now with some wear on the friction plates, it has gone below the minimum level. Inspect the friction plates. If the have friction pads left on them, put them back in but use more plates or a couple of thicker steel plates to bring the stack height back to an acceptable level. Also make sure that the spring plates have some spring left to them and have not gone flat due to overheating.

[keefer]

problem was that Everton had no spare plates. well one thinner one donated by skids.
the stack was on the low side but it was worth a try with the new spider.
just going to have to byte the bullet and get some new ones hey

[nelly]

Sorry David, no 12T plates in. stock Ducati ones will work just as well though.
If you've got the thinner plate, add it to the pack. Put it behind the pressure plate.
It'll increase the preload on the springs and provide more pressure on the pack itself.

[Felix]

I've got a few steel plates, various thicknesses, if you're stuck, 12 tooth Ducati ones, that is.