Editing Moto Guzzi 750S3

{{Infobox Motorcycle
|name             = [[Moto Guzzi]] 750S3
|image            = [[File:Moto-Guzzi-750S3--4.jpg|frameless|Moto Guzzi 750S3]]
|aka              = 
|manufacturer     = Moto Guzzi
|parent_company   =
|production       = 1975
|model_year       =
|predecessor      =
|successor        =
|class            =
|engine           = Four stroke, 90° V twin, longitudinally mounted, OHV, 2 [[valve]] per cylinder.
|bore_stroke      =
|compression      = 9.8:1
|top_speed        =
|power            =
|torque           =
|fuel_system      =
|ignition         = Battery with double contact breaker with automatic advance
|spark_plug       =
|battery          =
|transmission     = 5 Speed
|frame            =
|suspension       =Front: Telescopic forks <br>
Rear: Swing arm with single damper.
|brakes           =Front: 2x 300mm discs <br>Rear: Single 242mm disc
|front_tire       = {{tire|3.25H-18}} 
|rear_tire   	  = {{tire|3.50H-18}} 
|rake_trail       =
|wheelbase        =
|length           =
|width            =
|height           =
|seat_height      =
|dry_weight       = 206 kg / 454 lbs
|wet_weight       =
|fuel_capacity    = 22 Litres / 5.8 US gal
|oil_capacity     =
|fuel_consumption =
|turning_radius   =
|related          =
|competition      =
}}



==Engine==
The engine was a Air cooled cooled Four stroke, 90° V twin, longitudinally mounted, OHV, 2 valve per cylinder.. The engine featured a 9.8:1 [[compression ratio]].  

==Chassis==
It came with a 3.25H-18 front [[tire]] and a 3.50H-18 rear tire. Stopping was achieved via 2x 300mm discs in the front and a Single 242mm disc in the rear. The front suspension was a  Telescopic forks while the rear was equipped with a Swing arm with single damper.. The 750S3 was fitted with a 22 Litres / 5.8 US gal fuel tank. The bike weighed just 206 kg / 454 lbs.  
== Photos ==
[[File:Moto-Guzzi-750S3--4.jpg|600px|Moto Guzzi 750S3]]
[[File:Moto-Guzzi-750S3--3.jpg|600px|Moto Guzzi 750S3]]
[[File:Moto-Guzzi-750S3--1.jpg|600px|Moto Guzzi 750S3]]
[[File:Moto-Guzzi-750S3--2.jpg|600px|Moto Guzzi 750S3]]
[[File:Moto-Guzzi-750S3--1.jpg|600px|Moto Guzzi 750S3]]

== Overview ==
Moto Guzzi 750S3

















Of all the retro-bikes produced since motorcycle
manufacturers discovered the value of nostalgia, none can have been a more
faithful reproduction than the handsome naked 1000S that Moto Guzzi introduced
in 1990. The reason is clear when you set eyes on the 1975-model 750 S3. The
bike on which the 1000S was based is a gorgeous machine, with its long and low
shape, big transverse V-twin motor, and especially the sculpted fuel tank with
its two broad diagonal stripes.
Back in the mid-Seventies, that distinctive naked silhouette
belonged to a sports bike, not a piece of two-wheeled nostalgia. The S3 didn't
merely look good, it also had the performance to match: stable handling,
excellent braking, and an ability to cover long distances at a speed that few
other mid-Seventies machines could match.
The S3 owed its name to just one aspect of its chassis: the
triple-disc linked braking system that was introduced on this bike and also
the 850 T3 tourer. The S3 was a development of the similarly styled 750 S,
which had twin front discs and a drum rearand which itself was developed from
Guzzi's first sporting V-twin, the -drum-braked V7 Sport.
Even without the linked system, that trio of big 300 mm (11.8
in) discs and their Brembo calipers would have been a noteworthy feature in
1975, when rivals as glamorous and expensive as BMW's R90S flagship made do
with a rear drum. But more than any one particular feature, it's the Guzzi's
combination of partsfrom the clip-on bars via the big lump of engine all the
way to the black, shark's-gill tailpipesthat makes this bike so stylish and
purposeful.
The S3's pushrod-operated 90-degree V-vwin engine was heavily
based on that of the V7 Sport, sharing its bore and stroke dimensions of 82.5
x 70 mm (for a capacity of 748cc), its 9.8:1 compression ratio, and most
mechanical parts. But Guzzi had made some changes, most notably incorporating
a proper oil filter in the crankcases (the Sport made do with a mere
strainer), and replacing the earlier model's helical gear camshaft drive with
a cheaper chain and sprockets.
One of the Guzzi's main assets was its lack of height, which
was largely due to the way in which the steel frame's main spine ran between
those big sticking-out cylinders. This meant that the thinly padded seat was
just 730 mm (29 in) from the ground, making the S3 manageable for shorter
riders. But the high footrests and the long stretch forward across the tank to
the clip-ons combine with this to make a bike that would doubtless be
perfectly comfortable for a chimpanzee, but results in stretched arms and
cramped knees for anyone else.
The S3 fired up with that age-old transverse V-twin lurch to
the right, but it didn't have quite as much low-rev judder as the firm's
bigger V-twins. The sensations it delivered were all unmistakably Guzzi,
though: the shaft-drive bike's rather sudden take-off when I let out the
clutch, the pressure from the tappet-covers on my knees, and most of all the
aural blend of ticking valvegear, chuffing exhaust note, and hollow induction
note as the revs rose.


This bike's throttle was rather heavy, and the effort of
wrenching it wide open wasn't rewarded in as dramatic a way as I'd expected.
With a claimed maximum of 72 BHP at 7000 RPM, the S3 was powerful, on paper.
But perhaps the similar V7 Sport's claimed output of 52 BHP, delivered at the
rear wheel rather than the crankshaft, gave-a more accurate picture of the
later model's performance. (Manufacturers' figures during this period were
notoriously unreliable.)
What was for sure was that the S3's 747cc motor had less low
and midrange torque than the larger-capacity Guzzis that followed it, and
needed to be revved between 5000 RPM and the 7000 RPM yellow-line to give its
best, which wasn't what I'd expected of a big Guzzi. Even then, the
acceleration was not exactly dramatic. The S3's top speed when tested in 1975
was 125 mph (200 km/h), and its standing quarter an even less impressive 14.6
secondsover a second slower than the R90S, let alone the mighty Z1.
But if the Guzzi took a fair bit of time to reach an indicated
90 mph (145 km/h), what it excelled at was holding that speed to the horizon
and beyond. The S3's smoothness combined with tall gearing to make for
effortless riding. Its lack of midrange necessitated fairly frequent use of
the rather slow five-speed gearbox, but the Guzzi felt reassuringly strong and
lightly stressed.
The trio of big linked discs meant that the S3 could brake
hard, tooit's doubtful whether any bike stopped more quickly in 75. Treading
on the foot-pedal operated the rear Brembo, plus one of the front pair of
discs; the handlebar lever added the second front disc, and could be ignored
to allow easier throttle-blipping if you weren't trying to use every bit of
the front tire's grip.
Handling was also very impressive, in a traditional Guzzi way.
The S3 steered pretty slowly but was so stable that nothing would throw it off
its cornering line. Suspension at both ends was firm without being excessively
harsh, though the heavy shaft-drive rear end inevitably felt a bit remote. And
the grip from this bike's modern 18-inch Michelin rubber showed ground
clearance to be excellent.
Details such as the hard-to-use centerstand, dim warning
lights, and awful switchgear lost the Guzzi marks, as did its high price. But
to the average mid-Seventies motorcyclist, any complaints would have been far
outweighed by the S3's glamour and performance. Even so, only a relatively
small number of S3s were produced before Guzzi replaced it with the 850cc Le
Mans a year later. The sleek and beautiful 750 S3 was gone, but it was not
forgotten. The appearance of the 1000S, 15 years later, would provide proof of
that.
From. Bike, dec. 1975
"Starting with the heart of the matter, the engine, let's
point out that this is one of the surprisingly few motorcycles that will hold
cruis ing speeds in the high nineties without feeling like it's going to
scatte its internals over the tarmac.
But while the Guzzi is an effortless high speed cruiser, it
will fall short of many people's expectations because it doesn't accelerate in
the manner to which we've become accustomed in our latter-day 'superbikes'...
Even when you buzz the motor above five grand the bike doesn't seem to lunge
forward with the brute force of other biggies.
The motor has an odd wheezing sound that somehow fits the
bike's loping style. Laying over the big tank, you aim the Guzzi into turns
and it feels very predictable, very reassuring... However the Guzzi isn't the
day-long full tilt land cruiser that we'd hoped for. The riding position, not
the machine itself, makes that impossible."

Source Superbike of the seventies






{|  class="wikitable"
|- 
!Make Model
|Moto Guzzi 750S3
|- 
!Year
|1975
|- 
!Engine Type
|Four stroke, 90° V twin, longitudinally mounted, OHV, 2 valve per cylinder.
|- 
!Displacement
|748.4 cc / 45.6 cu-in
|- 
!Bore X Stroke
|83 x 70 mm
|- 
!Cooling System
|Air cooled
|- 
!Compression
|9.8:1
|- 
!Induction
|2x 30mm Dell'Orto carburetors
|- 
!Ignition
|Battery with double contact breaker with automatic advance
|- 
!Starting
|Electric
|- 
!Max Power
|70 hp / 52 kW @ 7000 rpm
|- 
!Max Torque
|NA
|- 
!Transmission
|5 Speed
|- 
!Final Drive
|Shaft
|- 
!Front Suspension
|Telescopic forks
|- 
!Rear Suspension
|Swing arm with single damper.
|- 
!Front Brakes
|2x 300mm discs
|- 
!Rear Brakes
|Single 242mm disc
|- 
!Front Tire
|3.25H-18
|- 
!Rear Tire
|3.50H-18
|- 
!Dry Weight
|206 kg / 454 lbs
|- 
!Fuel Capacity
|22 Litres / 5.8 US gal

|}

[[Category:Moto Guzzi motorcycles]]