1971 250-350 Bicilindrica
These pictures are made on Imola in 1972. There are curently no clear factory pictures available from this model, except for these, adjusted for the racing industry.
On February 25th 1971 a new model 250cc two-stroke appears on the racingtrack at Modena, Italy. Renzo Pasolini test-rides this model and it is Renzo Pasolini and the bike on the pictures below. This new model was invented by Alfredo Bianchi, technical CEO at Aermacchi Racing. The project was beeing lead by the well-known two-stroke specialist William Soncini. The basis was the 125cc Oro engine. Two of these engines combined gave 250cc and 46 horsepower on the rear wheel. The 350cc had a bore and stroke of 61x59.5 and later 61x54, good for 347.6 and 347.2cc. After many modifications, good results were achieved at the racing-track in 1972. At the worldchampionship 250cc Pasolini finished 2nd and third at the 350cc race. The best results were achieved in '74, '75' and '76 when Walter Villa rides and Aermachhi turned AMF-Harley-Davidson.