Ducati 100 Gran Sport "Marianna"

From CycleChaos
Jump to navigation Jump to search
Ducati-125-Gran-Sport.jpg
Ducati 100 Gran Sport "Marianna"
Manufacturer
Ducati
Production 1955 - 58
Engine
Four stroke, single-cylinder, OHC, shaft and bevel gears, 31 mm inlet valve, 27 mm exhaust valve
Compression ratio 8.5:1
Top Speed 130 km/h / 81 mph
Ignition Battery coil
Transmission 4 Speed
Frame Single tube, open cradle frame in tubular steel
Suspension Front: Hydraulically damped telescopic forks
Rear: Swingarm, dual shocks
Brakes Front: Drum, Amadori
Rear: Drum, Amadori
Front Tire 2.75 -17
Rear Tire 2.75 -17
Wheelbase 1250 mm / 49.2 in
Weight 80 kg / 176 lbs (dry),
Manuals Service Manual


It could reach a top speed of 130 km/h / 81 mph.

Engine[edit]

The engine was a Air cooled cooled Four stroke, single-cylinder, OHC, shaft and bevel gears, 31 mm inlet valve, 27 mm exhaust valve. The engine featured a 8.5:1 compression ratio.

Drive[edit]

Power was moderated via the Wet, multi-plate.

Chassis[edit]

It came with a 2.75 -17 front tire and a 2.75 -17 rear tire. Stopping was achieved via Drum, Amadori in the front and a Drum, Amadori in the rear. The front suspension was a Hydraulically damped telescopic forks while the rear was equipped with a Swingarm, dual shocks. The bike weighed just 80 kg / 176 lbs. The wheelbase was 1250 mm / 49.2 in long.

Photos[edit]

Ducati 100 Gran Sport "Marianna" Ducati 100 Gran Sport "Marianna" Ducati 100 Gran Sport "Marianna" Ducati 100 Gran Sport "Marianna" Ducati 100 Gran Sport "Marianna" Ducati 100 Gran Sport "Marianna"

Overview[edit]

Ducati 100 Gran Sport "Marianna"








When you consider the source, the 1955 Ducati Gran Sport "Marianna" was a most improbable machine. Two decades earlier, Ducati had been making radios, not motorcycles. Nine years earlier, in 1946, when Ducati came out with its first motorbike, it wasn't fierce or outlandish but a cute, two-horsepower gas-sipper called the "Cucciolo" ("puppy" in Italian).


But, by 1954, an engineer named Fabio Taglioni had joined Ducati, and his brilliant aesthetic sense combined with his genius for motor-making transformed the firm into a design and motoring tour de force. In 1955, the Gran Sport was only a 100cc bike with a four-stroke, single-camshaft engine, but by late 1956, Taglioni had developed a triple-camshaft "Desmo" 125cc Gran Premio racing bike capable of a screaming 12,500 rpms--unheard-of revs in those days.

But even before the Gran Premio, competition had proved the brilliance of the Marianna--so nicknamed because Taglioni's 1955 design was approved for production during the Catholic celebration of St. Mary. The Marianna blew away the competition at its first race and went on to dominate world competitions until the start of the 1960s. The bike was particularly successful at Milano-Tarantos and also won at three straight Giro Motociclistico d'Italia (Moto-Giros) endurance races that ran for five straight days. By the way, although the Gran Sports never had large displacements, they weighed less than 180 pounds and could easily run to 120mph. -- Michael Frank



Make Model Ducati 100 Gran Sport "Marianna"
Year 1955 - 58
Engine Type Four stroke, single-cylinder, OHC, shaft and bevel gears, 31 mm inlet valve, 27 mm exhaust valve
Displacement 99.66 cc / 6.08 cu in
Bore X Stroke 49.4 x 52 mm
Compression 8.5:1
Cooling System Air cooled
Lubrication System Forced oil sump
Induction Dell'Orto SS1, 20 mm
Ignition Battery coil
Starting Kick
Max Power 6.7 kW / 9 hp @ 9000 rpm
Clutch Wet, multi-plate
Transmission 4 Speed
Final Drive Chain
Frame Single tube, open cradle frame in tubular steel
Front Suspension Hydraulically damped telescopic forks
Rear Suspension Swingarm, dual shocks
Front Brakes Drum, Amadori
Rear Brakes Drum, Amadori
Front Tire 2.75 -17
Rear Tire 2.75 -17
Wheelbase 1250 mm / 49.2 in
Dry Weight 80 kg / 176 lbs
Top Speed 130 km/h / 81 mph


Share your opinion