Ducati 125 Formula 3
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| Ducati 125 Formula 3 | |
| Manufacturer | |
|---|---|
| Production | 1959 - 62 |
| Engine | Four stroke, single-cylinder, OHC, driven by shaft and gevel gears, |
| Compression ratio | 8.5:1 |
| Ignition | Battery and coil |
| Transmission | 4 Speed |
| Suspension | Front: Hydraulically damped telescopic forks Rear: Swingarm, dual shocks |
| Brakes | Front: Drum Rear: Drum |
| Front Tire | 2.50 -18 |
| Rear Tire | 2.50 -18 |
| Weight | |
| Manuals | Service Manual |
Engine[edit | edit source]
The engine was a Air cooled cooled Four stroke, single-cylinder, OHC, driven by shaft and gevel gears,. The engine featured a 8.5:1 compression ratio.
Drive[edit | edit source]
Power was moderated via the Wet, multi-plate.
Chassis[edit | edit source]
It came with a 2.50 -18 front tire and a 2.50 -18 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a Hydraulically damped telescopic forks while the rear was equipped with a Swingarm, dual shocks.
Photos[edit | edit source]
Overview[edit | edit source]
Ducati 125 Formula 3
The Ducati 125 Formula 3 bikes were born from Fabio
Taglionis iconic 100-cc Gran Sport, a model that set the pattern for Ducati
singles for the next 20 years. With its 100 cc SOHC bevel-drive single
generated engine that produced 9 horsepower at 9,000 rpm with a top speed of
80 mph, the Gran Sport became the barometer for all other Ducati single
bikes built in the 50s.
One of the bikes that was born from this lineage is the Formula 3, or F3 for short. Whereas the Gran Sport carried 100 cc at its disposal, the F3s powertrain was increased to a 125 cc SOHC Desmo single engine, a move that also resulted in a bump in horsepower to 12 ponies at 9,800 rpm and an increased top speed of 93 mph. The Desmodromic valve gear, which mechanically opened and closed the valves, was developed from the Mercedes-Benz technology they used on their straight-eight W196 Grand Prix cars. While Mercedes never used it in on its production cars at that time, Taglioni saw the opportunity to develop it for racing purposes.
Eventually, the Ducati F3 became available in different powertrain trims, including the 125 cc, the 175 cc, and the 250 cc. All these later models gained enclosed valve springs, with the larger bikes also carrying an improved twin-leading shoe Amadoro brake. Steering head angles and rear suspensions were also altered to improve handling while larger megaphone exhausts were fitted into the bikes overall set-up.
The Ducati Formula 3 is a model that was developed exclusively for racing purposes with Ducati preparing them for private racers. Source:
| Make Model | Ducati 125 Formula 3 |
|---|---|
| Year | 1959 - 62 |
| Engine Type | Four stroke, single-cylinder, OHC, driven by shaft and gevel gears, |
| Displacement | 124 cc / 7.6 cu in |
| Bore X Stroke | 55.3 x 52 mm |
| Compression | 8.5:1 |
| Cooling System | Air cooled |
| Lubrication System | Forced oil sump |
| Induction | Dell'Orto SS1 20C carburetor |
| Ignition | Battery and coil |
| Starting | Kick |
| Max Power | 8.9 kW / 12 hp @ 9800 rpm |
| Transmission | 4 Speed |
| Clutch | Wet, multi-plate |
| Final Drive | Chain |
| Front Suspension | Hydraulically damped telescopic forks |
| Rear Suspension | Swingarm, dual shocks |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Front Tire | 2.50 -18 |
| Rear Tire | 2.50 -18 |