M900 clutch cover gasket

the lodger · 29-11-2023, 08:45 AM

I am on a mission to reduce the clatter from my clutch. I will be trying the quiet clutch mod courtesy of extra clutch plates donated by Dukedesmo but I also note that I have a steel clutch cover that riings like a bell if I hit it, and that can't help the cause at all. I think the cover should have a (rubber?) gasket , which I don't have. Has anyone got a gasket I can have? Thanks

Mr Gazza · 29-11-2023, 09:32 AM

I'm sure Moto Rapido or indeed any Ducati dealer would be able to provide you with one.
They do charge of course, but if anyone lets you have one make sure the little brass spacers are all present in the mounting screw holes.
Sometimes the cover will squash the rubber gasket into the drum and the resulting cloud of rubber smoke is very entertaining.
I believe the steel cover is actually double walled in an attempt at sound deadening. Not sure it should ring? I wonder if annealing it would make it less resonant?

Dukedesmo · 29-11-2023, 09:42 AM

Guess what!

I've got a couple of these knocking about that I'll never use.

As an aside, I think if you fit the OEM metal cover then you might need the gasket or at least some spacers (rubber gasket has some spacers in it) to stop it touching the spinning clutch?

Happy to do the same deal as the plates?

the lodger · 29-11-2023, 10:12 AM

Tim, are you offering a gasket with brass spacers?
Thanks

Dukedesmo · 29-11-2023, 10:31 AM

Quote:

Originally Posted by the lodger

Tim, are you offering a gasket with brass spacers?
Thanks

Yes, OEM Ducati gasket with brass spacers;

Spacers are only fitted in 4 holes as the other 2 don't actually hold the cover on, it slips over the top.

the lodger · 29-11-2023, 11:30 AM

Tim, I'll have that, many thanks. I have sent you a pm

Gazza, I'm not sure about it being double skinned. It doesn't really look like it is. Its an original cover with an elephant on it

Thanks

Dukedesmo · 29-11-2023, 11:55 AM

No problem, will get it off to you.

The only covers I've seen are double skinned but I think that might be a later modification so earlier covers may not be? No idea if the double skin was for noise or strength?

if you look at the edges, you should see the join of the 2 layers of thin metal that make up the cover, certainly the 2 I've got here are both that way.

If it's got an Elephant on then it's probably early Cagiva stock.

the lodger · 02-12-2023, 01:22 PM

Thanks Tim, you have a pm.

I'm pretty sure the cover is single-skinned. No doubt the later double-skinned cover is slightly less noisy but in the interests of maintaining originality I'll have to live with what I've got.

Cheers

Mr Gazza · 02-12-2023, 03:02 PM

I've got a feeling it might be an aluminium cover if it's got an Elefant on it?
Have you tried a magnet on it?

Dukedesmo · 07-12-2023, 11:49 AM

Quote:

Originally Posted by Mr Gazza

if anyone lets you have one make sure the little brass spacers are all present in the mounting screw holes.

Interesting you say this as I was sorting out some parts yesterday and found this;

4mm thick alloy spacer, presumably to replace the rubber gasket whilst keeping sufficient distance from the clutch?

No idea if a Ducati part or aftermarket.

Mark64 · 07-12-2023, 05:20 PM

I made a couple of those on a lathe at work, I think Darren69 may have them, might be worth getting in touch

Dukedesmo · 07-12-2023, 06:12 PM

Quote:

Originally Posted by Mark64

I made a couple of those on a lathe at work, I think Darren69 may have them, might be worth getting in touch

This is probably one of them then, as it was in a box of bits I had from you.

Darren69 · 07-12-2023, 09:52 PM

Quote:

Originally Posted by Mark64

I made a couple of those on a lathe at work, I think Darren69 may have them, might be worth getting in touch

Yea, I think I have seen one of those in one of the boxes you gave me. I actually thought it was a later factory part

Mark64 · 08-12-2023, 12:04 PM

You're welcome guys, not bad for an amateur on a lathe, I was always right out of my comfort zone when using one, scared the pants off me sometimes but needs must....

the lodger · 08-12-2023, 12:33 PM

Anoraks corner. My mistake. I checked with a magnet and my clutch cover is aluminium , not steel. As well as an elefant , the inside of the cover has a "4" date stamp (?) I'm guessing for a manufacturing date of 1994 and a name of Emilpress. I looked them up and they still exist as an Italian manufacturer of aluminium products.

I'm guessing that part of the rationale for the alloy gasket is to replace the original rubber one , which doesn't look great when fitted.

29-11-2023, 08:45 AM	#1
the lodger Registered User Join Date: Oct 2019 Location: Chorley Bike: M900 Posts: 160	M900 clutch cover gasket I am on a mission to reduce the clatter from my clutch. I will be trying the quiet clutch mod courtesy of extra clutch plates donated by Dukedesmo but I also note that I have a steel clutch cover that riings like a bell if I hit it, and that can't help the cause at all. I think the cover should have a (rubber?) gasket , which I don't have. Has anyone got a gasket I can have? Thanks __________________ Contents may settle !

29-11-2023, 09:32 AM	#2
Mr Gazza Lord of the Rings Join Date: May 2013 Location: Norwich Bike: M900sie Posts: 5,848	I'm sure Moto Rapido or indeed any Ducati dealer would be able to provide you with one. They do charge of course, but if anyone lets you have one make sure the little brass spacers are all present in the mounting screw holes. Sometimes the cover will squash the rubber gasket into the drum and the resulting cloud of rubber smoke is very entertaining. I believe the steel cover is actually double walled in an attempt at sound deadening. Not sure it should ring? I wonder if annealing it would make it less resonant? __________________

29-11-2023, 09:42 AM	#3
Dukedesmo Registered User Join Date: Sep 2010 Location: Leics Bike: M900 Posts: 2,848	Guess what! I've got a couple of these knocking about that I'll never use. As an aside, I think if you fit the OEM metal cover then you might need the gasket or at least some spacers (rubber gasket has some spacers in it) to stop it touching the spinning clutch? Happy to do the same deal as the plates? __________________ M900, 916, LeMans II. Last edited by Dukedesmo; 29-11-2023 at 09:46 AM..

29-11-2023, 10:12 AM	#4
the lodger Registered User Join Date: Oct 2019 Location: Chorley Bike: M900 Posts: 160	Tim, are you offering a gasket with brass spacers? Thanks __________________ Contents may settle !

29-11-2023, 11:30 AM	#6
the lodger Registered User Join Date: Oct 2019 Location: Chorley Bike: M900 Posts: 160	Tim, I'll have that, many thanks. I have sent you a pm Gazza, I'm not sure about it being double skinned. It doesn't really look like it is. Its an original cover with an elephant on it Thanks __________________ Contents may settle !

29-11-2023, 11:55 AM	#7
Dukedesmo Registered User Join Date: Sep 2010 Location: Leics Bike: M900 Posts: 2,848	No problem, will get it off to you. The only covers I've seen are double skinned but I think that might be a later modification so earlier covers may not be? No idea if the double skin was for noise or strength? if you look at the edges, you should see the join of the 2 layers of thin metal that make up the cover, certainly the 2 I've got here are both that way. If it's got an Elephant on then it's probably early Cagiva stock. __________________ M900, 916, LeMans II.

02-12-2023, 01:22 PM	#8
the lodger Registered User Join Date: Oct 2019 Location: Chorley Bike: M900 Posts: 160	Thanks Tim, you have a pm. I'm pretty sure the cover is single-skinned. No doubt the later double-skinned cover is slightly less noisy but in the interests of maintaining originality I'll have to live with what I've got. Cheers __________________ Contents may settle !

02-12-2023, 03:02 PM	#9
Mr Gazza Lord of the Rings Join Date: May 2013 Location: Norwich Bike: M900sie Posts: 5,848	I've got a feeling it might be an aluminium cover if it's got an Elefant on it? Have you tried a magnet on it? __________________

07-12-2023, 05:20 PM	#11
Mark64 Bronze Member Join Date: Nov 2014 Location: Hondon de los Frailes Bike: S4r Posts: 288	I made a couple of those on a lathe at work, I think Darren69 may have them, might be worth getting in touch

08-12-2023, 12:04 PM	#14
Mark64 Bronze Member Join Date: Nov 2014 Location: Hondon de los Frailes Bike: S4r Posts: 288	You're welcome guys, not bad for an amateur on a lathe, I was always right out of my comfort zone when using one, scared the pants off me sometimes but needs must....

08-12-2023, 12:33 PM	#15
the lodger Registered User Join Date: Oct 2019 Location: Chorley Bike: M900 Posts: 160	Anoraks corner. My mistake. I checked with a magnet and my clutch cover is aluminium , not steel. As well as an elefant , the inside of the cover has a "4" date stamp (?) I'm guessing for a manufacturing date of 1994 and a name of Emilpress. I looked them up and they still exist as an Italian manufacturer of aluminium products. I'm guessing that part of the rationale for the alloy gasket is to replace the original rubber one , which doesn't look great when fitted. __________________ Contents may settle !