Clutch replacement 120? engine

eugen_zh

eugen_zh

New member
Location
Switzerland
What will be the consequences if i do not mount the small springs between the seventh and the eighth disc?

I can't imagine any negative effect .....

What do you think? What are your experiences?

THANX A LOT FOR YOUR SUPPORT!!
 
Nothing :D
There were some discussions about those springs. They should avoid shaking between the drum and the clutch plates and bring some pretension in the small play between the triangles of the drum and the clutch plates. So finally they also would reduce the wear between the parts and some noise.
Others say dont fix the spring so you can avoid that they brake and the small wires cannot slip in the oil circuit and cause damage.
I do not use them in all my  three .120* engines.
Andre
 
The doubled plates and springs are solely a noise-reduction measure, as are most of the modifications of the Mk II and 120? engines as opposed to the Mk I.

I always fit them as I simply cannot justify unnecessary noise in an overhauled customer engine.

If you like your clutch sounding like it's starting to fall to bits, or like a fuckin' Ducati, go ahead, leave 'em out. :D

piet
 
Piet,
I have expected your opposite opinion, but the springs are difficult to install without a special tool like a cutted drum.
Andre
 
Said it before and I'll say it again Piet, these engines make so much extraneous noise that the minimal reduction this may make is lost in the rest of the aural symphony.
 
Said it before and will gladly repeat myself, Laverda triples need not be noisy... my mechanics honour doesn't allow me to take shortcuts.

A well-assembled triple is on par with a contemporary jap engine.  Wall thickness and density of castings usually being the deciding factor that may afford the Lavs just a little more clatter, not much that can be done about that. 

piet
 
Thank you all for your quick and subtle responses.
Against my real will, but due to my actual circumstances and possibilities I will ride with two springs less.
 
If fitting these springs turn a noisy Laverda engine into a quiet one then I would fit them.
Technically the noise may reduce fractionally but can any one of us to detect the difference.
 
Consider leaving them out as reducing weight in the engine...
I removed mine with wire cutters a few years back and feel better for it
 
Grant said:
If fitting these springs turn a noisy Laverda engine into a quiet one then I would fit them.
Technically the noise may reduce fractionally but can any one of us to detect the difference.
Click to expand...

I have heard Laverda engines with almost no mechanical noise and with lots of, both freshly rebuild. Not sure it was the spring alone, but for sure there is a big difference in mechanical noise between MK1 and MK2 engines that I think I noticed.

but then, the spring IS a f**cker to fit without the appropriate tools... Did it twice, took me hours...
 
My S1 1200 came with those springs fitted and even managed to reassemble the clutch with springs with out the special tool at least a couple of times.
I ended up leaving them out and fitted an extra steel plate between the friction plates.
If there was extra noise by not fitting them I certainly can't hear it over the Rattle of the flat side Mikunis :D
 
Springs were in my 1980 series 1, but i have earlier and not noisy.
Nice to know there's a rattle on the jap carbs (Lavflag) (Lavflag)
 
CLEMTOG said:
They were fitted to the last of the series 1's, have seen one here as well which surprised me.
CLEM
Click to expand...

Yep, introduced at engine #6878 for 1000, #2464 for 1200.  Mk II came in at #7237/#3063.

piet
 
You must log in or register to reply here.
Back
Top