Ducati 100 Gran Sport "Marianna"
It could reach a top speed of 130 km/h / 81 mph.
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| Ducati 100 Gran Sport "Marianna" | |
| Manufacturer | |
|---|---|
| Production | 1955 - 58 |
| Engine | |
| 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 |
EngineEdit
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.
DriveEdit
Power was moderated via the Wet, multi-plate.
ChassisEdit
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.
PhotosEdit
OverviewEdit
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 |