Re: What did you do to or for or with your Laverda today?

I reckon Steve is on the money. One of the collets is displaced and all bashed-up looking. It's been rattling around in there for a while. It's a wonder the remaining collet held onto the valve stem. If it had let go, the valve would have fallen into the cylinder and caused all sorts of carnage. 

Did you hear it running in that condition Andy? I'd be interested to know what it sounded like.
 
Valve stem might have been ground down to get some clearance on a receeding seat. Nothing quite like it to pop a collet out.
Paul
 
Dellortoman said:
Did you hear it running in that condition Andy? I'd be interested to know what it sounded like.
Click to expand...
It started to run rough while in the middle of a 3,000 km tour- but it would seem to clear up and be fine after a minute or two.  I was 99% certain I had some crap in the carbs blocking fuel flow somewhere.  When I got home I did a compression test and the #1 cyl was only at 80 psi, so I knew the head and/or piston/rings needed attention... that was 2 yrs ago when I parked the bike and got distracted by other shiny objects.  I'll pull the motor and head this weekend to get a better look at things.
 
Riding home from work on Friday there was a definite metal running on metal noise coming from the primary case on the SF2.
Remember I'd drastically overtightened the primary chain and found bits of tensionner plastic in my drained oil.
Well, Friday evening, I started a quick once over of the bike before setting off to Cumbria tomorrow.
Greased the swigarm, air in the tyres and decided to check primary chain tension, engine runnig rather than statically. I actually had to back the tensionner off, it was that tight!
There's probably a bit of plastic hanging around in the primary case. Will have a look this winter. Easier clutch and gear selection are a secondary benefit. Rode the machine to work Monday and Tuesday.

Off tomorrow up north, then a classic bike weekend end of October, then off with the primary case.

Paul
 
aebbern said:
It started to run rough while in the middle of a 3,000 km tour- but it would seem to clear up and be fine after a minute or two. 
Click to expand...

That makes sense. I presume the rough running was when the stray collet got between the bucket and the valve spring retainer, not letting the valve close fully. The marks on the spring retainer are testimony to that happening. It would presumably rattle out of the way for a while and the bike would run better.

Good that you got to it before something more serious happened. I'm still amazed that it didn't drop the valve. Seems one collet is enough. Two is over-engineering!
 
Not directly Laverda-related although I had to move a couple of Laverdas out of the way to make room...

Starting the rebuild on the 2 x 900SS Ducatis. This is always the bit I enjoy the most, putting all the shiny back together.
One of the tanks is in fibreglass, supplied by our Boba. After painting it is visually indistinguishable from the metal one.



 
Customer specified and sourced.
It is also the same as what came off the original seat.
 
Katie, please be gentle with them as they no not what they say, post them a pic of your lovely Black and Gold 900ss unmolested and sublime bike. Hopefully will see Saturaday on your lovely guzzi at the Davida rally.

Best regards andy XX
 
We down here now hon...tad damp on way....tent up in the sunshine tho...lovely view of the Black Mountains....
I last camped at Baskerville Hall in 1994 would you believe....I was racing at an Autograss Open meeting in the grounds.....and 3 months pregnant !....fortunately nobody noticed and number one son turned out ok.....
My performance tho ....? Mediocre at best....but I was a little nauseous at the time....I do remember being in second when the throttle linkage slipped off the accelerator pedal.....I hunkered down in the seat...slipped me belts off....popped it back on....belts back on and finished the race in 6th....then got black flagged fer takin me belts off.....doh !
 
Well at least you didn't nick yer man's leathers and end up looking like a bleedin' Easter egg!

f614b1c7-9f2c-46e9-9b56-f1ff5f2fe5c9_zps37e0c474.jpg


23 years ago....time flies...

H.
 
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