Aermacchi H.-D. Ala d'Oro 125 - 250
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| Aermacchi H.-D. Ala d'Oro 125 - 250 | |
| Class | Racing |
|---|---|
| Engine | 246.3 cc Aermacchi-HD two-cylinder, two-stroke, with cross-port distribution. |
| Bore / Stroke | (56 mm. x 50 mm.) |
| Top Speed | 140 mph |
| Horsepower | Over 50 h.p. at 11,400 r.p.m. |
| Transmission | Six-speed block |
| Brakes | Front, central drum, four shoes, four-cam; rear, central drum, double cam |
| Weight | |
| Manuals | Service Manual |
Aermacchi H.-D. Ala d'Oro 125 1970 Aermacchi was a great advocate of high-performance four-stroke engines. But in 1967 the company followed the current fashion and built a racing motorcycle with a two-stroke engine. At first the object was to produce a new vehicle that would be competitive in the 125 class for loyal customers who raced in the Italian Junior championship.
The Ala d'Oro 125 was inexpensive to buy and maintain, and it offered a level of performance superior to that of the four-stroke Morinis and Motobis that dominated racing at the time. But the small motorcycle, with its 20 h.p., proved from the time it was first raced-in 1968to be competitive in professional racing as well. Eugenio Lazzarini and Silvano Ber-tarelli rode the 125 during the Senior season against the Villa brothers and Giuseppe Mandolini, whose motorcycles were powered by single-cylinder rotating-disk engines. Bertarelli won the championship, and the Ala d'Oro, which up to this time had been sold primarily in Italy, became a popular racer even with foreign drivers. One of them, the Australian John Dodds, won the 1970 West German Grand Prix on the Niirburgring track during very bad weather. Much of his success was due to the great maneuverability of the small vehicle. Motorcycle: Aermacchi-Harley-Davidson Ala d'Oro 125 Manufacturer: Aermacchi-Harley-Davidson, Varese Type: Racing Year: 1970 Engine: Aermacchi-HD single-cylinder, two-stroke, with cross-port distribution. Displacement 123.1 cc. (56 mm. x 50 mm.) Cooling: Air Transmission: Six-speed block Power: 25 h.p. at 10,800 r.p.m. Maximum speed: Over 115 m.p.h. Chassis: Double cradle, continuous, tubular. Front and rear, telescopic suspension Brakes: Front, central drum, four shoes, four-cam; rear, central drum
Aermacchi Harley-Davidson 250 1972
When Renzo Pasolini severed his ties with Benelii at the end
of the 1970 season, he went back to Aermacchi, the company he had raced for
before joining Benelii. Pasolini started out his racing career with Aermacchi
and won his first races with the rod-and-rocker Ala d'Oro.
Aermacchi and Harley-Davidson now worked together. One of the
many projects that they were considering was a particularly interesting plan for
a 250-cc. engine, two-stroke, consisting of two paired Ala d'Oro 125 cylinders.
Pasolini had his eye on that model as an instrument of revenge, and Aermacchi
consented to build it for him in the hope of regaining lost ground in speed
racing.
The Aermacchi 250 two-cylinder, two-stroke prototype was ready
in the spring of 1971. Although the first version was very heavy and the
cylinders were made of steel rather than aluminum, the initial tests were
excellent. The racing team was so enthusiastic about the new 250 that an
enlarged 350 version was readied.
In 1972 Renzo Pasolini rode a vehicle very similar to the prototype to win three
Grand Prix races. He lost the 250-class world championship by a single point. In
the 350 class he came in third, behind Giacomo Agostini with MV Agusta and Jarno
Saarinen with Yamaha.
Motorcycle:
Manufacturer: Aermacchi-Harley-Davidson, Varese
Type: Racing
Year: 1972
Engine:
Displacement
Cooling: Air
Transmission:
Power:
Maximum speed:
Chassis:
Brakes:
Photos[edit | edit source]
Racing Bikes Aermacchi H.-D. Ala d'Oro 125 - 250
Racing Bikes Aermacchi H.-D. Ala d'Oro 125 - 250
Racing Bikes Aermacchi H.-D. Ala d'Oro 125 - 250
