Ducati 250 Formula 3
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| Ducati 250 Formula 3 | |
| Manufacturer | |
|---|---|
| Production | 1960 - 62 |
| Engine | |
| Compression ratio | 8.5:1 |
| Ignition | Battery and coil |
| Transmission | 4 Speed |
| Frame | Single cradle tubular frame |
| Suspension | Front: Hydraulic telescopic fork Rear: Swingarm, dual shocks |
| Brakes | Front: Drum Rear: Drum |
| Front Tire | 2.50 -19 |
| Rear Tire | 2.75 -19 |
| Weight | |
| Manuals | Service Manual |
Engine[edit | edit source]
The engine was a Air cooled cooled Four stroke, single cylinder, SOHC, shaft and bevel gear driven, 2 valves per cylinder. The engine featured a 8.5:1 compression ratio.
Drive[edit | edit source]
Power was moderated via the Multi wet plate, wet.
Chassis[edit | edit source]
It came with a 2.50 -19 front tire and a 2.75 -19 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a Hydraulic telescopic fork while the rear was equipped with a Swingarm, dual shocks.
Photos[edit | edit source]
Overview[edit | edit source]
Ducati 250 Formula 3
With production of the overhead camshaft singles well underway for 1958
the Formula 3 superseded the Marianna (the Gran Sport's nickname) as a
catalogued production racer. Offered initially as a 125 and 175 (and
from 1960 as a 250), the F3 was still largely based on the Marianna."
Almost nothing from the production street 250s was used in the F3 and as
further evidence of this uniqueness, virtually no engine gaskets were
interchangeable with the production OHC single. The UK version was known
as the 250 Manxman F3
The frame, although inspired by the road version, was quite different being both lower and lighter, with a lower steering head, shorter 35mm Marzocchi steel fork legs, and shorter swing arm, too. Plus 19in wheels for the 250. The 175 motor would not fit the 125 frame, and come to that, the 250 wouldn't go into either. "Although the F3s were genuine factory racing machines they suffered through being too expensive for most privateers, and were penalized by the 4-speed gearbox." Production of all three capacity F3s together was very small, perhaps less than 100, with perhaps only as few as five or six 250s.
Source: and Standard Catalog of Ducati Motorcycles, 1946 - 2005, Ian Falloon
| Make Model | Ducati 250 Formula 3 |
|---|---|
| Year | 1960 - 62 |
| Engine Type | Four stroke, single cylinder, SOHC, shaft and bevel gear driven, 2 valves per cylinder |
| Displacement | 248.6 cc / 15.2 cu in |
| Bore X Stroke | 74 x 57.8 mm |
| Compression | 8.5:1 |
| Cooling System | Air cooled |
| Induction | Dell'Orto SS1 29A carburetor |
| Ignition | Battery and coil |
| Starting | Kick |
| Max Power | 17.2 kW / 23 hp @ 8200 rpm |
| Clutch | Multi wet plate, wet |
| Transmission | 4 Speed |
| Final Drive | Chain |
| Frame | Single cradle tubular frame |
| Front Suspension | Hydraulic telescopic fork |
| Rear Suspension | Swingarm, dual shocks |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Front Tire | 2.50 -19 |
| Rear Tire | 2.75 -19 |