750
SF 1972:  | This
1972 SF (here pictured at Breganze) was my usual mean of transport, everyday to
my work place, week-ends and holidays, meetings and rallies... Trips to Breganze,
Venezia, Spain, Switzerland... This is a "SF0" model, means
that it was produced between the very first SF (with "S" type tank,
Smiths clocks, small valves and small carbs, and first generation Laverda drum
brakes) and the "SF1". This means that it still got the "old"
engine model (S series), Bosch headlight and first generation drum brakes, however
it had already the new tank and the ND clocks. When I found it somewhere
in the French Alps, I was already aware that it had been intensively used in the
past although I hadn't a lot of infos about it. It
was only some years later that I incidentally met the first owner who, fortunately,
had yet at home a note book on which he used to mention all the work and maintenance
done on the bike. It became obvious that the bike had 185 000 km (115 000 miles)
on the clocks when I bought it! It got only three piston sets and several bearings
changes, and apart the usual maintenance, that was all! Surprisingly, it had yet
the LHS crankshaft ball bearing instead of the more reliable roller one!
However, it appeared that the bike had crashed during its first years and the
frame had been changed for a later model. I did about 40 000 km on this bike,
enjoying its impressive reliability and character.
As for the main repairs, I had to rebuild the crankshaft which had not less than
200 000 km at that time and which became to be quite noisy! Excellent starting,
never failed on the road, it was a very reliable and nice bike that I still regret.
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Main
mechanical problems : Wheel
and rear sprocket bearings, crank rebuilt at 200 000 km, leak to the head gasket
after having fit a new one (bad quality), broken gudgeons on the cams checking
doors, cracked frame around the LHS rear engine fixing point (TIG welded).
Periodic maintenance works: Piston rings, ball and roller
bearings changed, timing and primary chain, primary chain tensioner. (Never changed
the timing chain tensioner and valve guides). Sparks plugs, oil,
...: Spark plugs: NGK B10EGV. Engine oil: Motul 3100 15W50. Tyres
Avon Roadrunner then Michelin Macadam 50. Rear shocks: Fontana (from Todd in the
UK). Fork oil: W20 (35mm Ceriani). Modifications: Exhausts:
Decibel (UK), K/N air filters, Guzzi handlebar, ignition retarded by 2 degrees
to solve some pinking problem with the modern fuel and HC pistons. |
750
SFC 1971:
 |
I
have ever prefered the wild look and the symbolic of the early SFCs, compared
to the later disc brakes models. This SFC is one of the 20 first produced (5000
serie), when these bikes were sold only for racing and not to the public (May
1971). It had been modified during its life (8000 serie tank and seat,
SF crankcases) but it had been rebuilt with the correct specs: 2/C cams, 9,65/1
pistons, 36mm Amal carbs, "flat" megaphones, "5000" series
original frame... The SFC registry was very helpful to check that the
bike was originally a real SFC.
It is quite impossible to use this racing
bike on open road: No papers (never sold to public, racing use only), no registration,
very LOUD exhausts, no speedometer... Then,
I use it only on tracks (Coupes Moto-Légende in France), at the International
Rally at Breganze (50th anniversary of Laverda) and some others shows.
There is no power peak through the range but the engine was strong, blasts on
long straight roads was a real pleasure. I
had a lot of pleasure to ride or simply contemplate it but I had to deplore some
covetousness and bad intents which I think are rather common about rares or prestigious
bikes. Quite tiring and worrying! | Main
mechanical problems:
Worn LHS camshaft (probably bad quality as it was a remanufactured part), rear
wheel bearings, Amal carbs difficult to set-up. Spark plugs, tyres...:
Spark plugs: NGK B10EGV, Engine oil: Motul 3100 15W50, Tyres: Dunlop TT100 (for
the original look!) Modifications: Reduction of
the rev counter sprocket lube feed (to improve the lubrication of the camshaft
itself), fitting of a charging light.
1000 3CL 1977:
 | My
real Laverda dream was ever to own a 1000 180°...But I liked my 750s so much
and I heard so many bad things about the triple reliability (above all from the
twin's afficionados...) that I had a long hesitation before looking for such a
bike... I heard about an unreliable bike, which handles so badly...
I
have finally found a very good bike, as reliable as the twins (no failure at all
except the ignition which had to be changed) and which handles certainly better
than the twins I owned... I must say without hesitation that I liked my 750s
(and I would like to own one yet again!) however I definitely prefer the 1000
180°.
On the other hand, it's true to say that city traffic is not
its cup of tea, the engine having a tendency to overheat. The Bosch ignition
system is to be changed absolutely, it's the real weak point of this motorbike.
It is unreliable, gives a brutal engine and avoid to get all the pleasure of this
beautiful engine. This ignition kept this fantastic engine well hidden for more
than 30 years!
A modern ignition system is required, it improves everything,
I have opted for the IIS system, well done, powerful and perfectly reliable. |
| Main
mechanical problem:
Bosch ignition failure. Maintenance : Primary
and timing chains replacement, primary chain tensioner, clutch drum rubbers, wheels
bearings and rear sprocket bearings in prevention. Spark plugs, tyres,...:
Spark plugs: NGK B8ES, tyres: Dunlop Arromax II then Bridgestone BT45V,
engine oil: Castrol Grand Prix 15W50, fork oil: 10W Modifications:
Progressive Suspension rear shocks, stainless steel Jota exhausts, K/N
air filters, IIS ignition, 250W ND alternator. 1000
SFC 1988:  |
My
last acquisition! This bike made me dreaming for many years... Not easy to find
and quite expensive but I had to get it! This is a 1988 1000 SFC. Its
120° engine is more docile and stable than the 180°, faster too, while
the 180 seems to be more impressive, but it is so difficult to compare...
In fact, in spite of similar basis, these engines are really different. Very
good equipement concerning the frame and chassis: 42mm M1R fork, Brembo racing
brakes, strong aluminium swinging arm... | Main
mechanical problem:
DMC ignition failure. Leaking foat valve on Dell'Ortos. Maintenance
: Completely renewed after the purchase. Spark plugs,
tyres,...: Spark plugs: NGK B8ES, tyres: Bridgestone BT45 V
series, engine oil: Castrol Grand Prix 15W50, fork oil: 5W Modifications:
Ikon rear shocks, stainless steel Witt Production exhausts, Unifilter
air filter, IIS ignition. Mikuni RS36 carbs fitted in 2007.
LAVERDA
MINISCOOTER 60cc 1963  | Here
is the very rare Laverda Miniscooter 60cc 4 strokes produced by the old factory
at Breganze downtown since 1960.
Found in Italy, complete but in average
state, I restored it entirely.
The reference of the paint has been found
thanks to a chip taken under the chassis, still not faded by the sunlight.
The
rubber pads and the stickers are replicas.
The engine was in good state,
I've just done a whole check, changed the electrical wiring, all the cables and
I did a valve grinding. It
idles perfectly and it delivers only very few mechanical noises. It is also very
economical, the fuel consumption is only 1 liter per 100 km!
This is a
real 4 strokes engine, with a camshaft, valves, oil sump and a dipstick!
Click
here to see some pictures of the restoration process.
| | LAVERDA
750 1969 |  | One
of the very early 750s. In very bad state when I got it, not only because the
lack of maintenance but also due to some stupid work into the engine in the past.
I had to rebuild everything. This
is however one of the most beautiful of all... | And
also ... LAVERDA 1200 1978 racing, another 1000 3CL de 1976 in boxes... |
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