1970, a meaningful milestone in Marzocchi evolution

After two crises the company move on to the production of heavy and off-road motorcycles

After two serious economic crises were overcome, at the beginning of 1970’s the upturn of the Marzocchi Company coincided with that of the heavyweight and off road motorcycle manufacturers.

In 1971, Ducati requested the development of a special front fork with disc brakes for heavyweight motorcycles.

The Marzocchi brothers and their colleagues designed a new fork with a front axle, which was revolutionary for that time.

The PA forks land at 200 Miles circuit of Imola

The forks with the front axle would be renowned as PA (Perno Avanzato – Advanced Axle), mainly thanks to Ducati’s exceptional victories in the 500 cc. and 750 cc. class races in 200 Miles circuit of Imola at the 1972 World Championships.

Motore

Bicilindrico 4 tempi a V longitudinale di 90°
Basamento tagliato longitudinalmente; teste e cilindri in lega leggera; canne in ghisa

Cilindrata

747,95 cc

Distribuzione

Desmodromica monoalbero, comandata da albero e coppie coniche

Raffreddamento

Ad aria

Carburatore

Due carburatori Dellorto PHF 40 con pompa di ripresa

Potenza massima

82 CV a 9.000 giri

Velocità massima

circa 250 km/h

Cambio

5 marce

Frizione

Multidisco a bagno d'olio

Telaio

A doppia culla aperta in tubi d'accaio

Sospensione anteriore

Forcella teleidraulica Marzocchi a perno avanzato

Sospensione posteriore

Forcellone oscillante a due ammortizzatori Ceriani da 310 mm

Freno anteriore

A doppio disco 280 mm con pinze Lockheed

Freno posteriore

A doppio disco 229 mm con pinza Lockheed

Research leads to new solutions

In the 70s the motorcycle market has grown steadily and the factory, moved to a larger site in Zola Predosa, is able to meet its needs. Research has become the central pivot around which the manufacturing is developed.

New models and new materials were carefully studied and used to provide and develop the best possible product features: for instance, a front fork for Enduro with central axle and seagull-like lower crown with a maximum travel of 250 mm was produced.

Its testing was done with the help of the Russian rider Ghennadi Moiseev, who won the 1974, 1977 and 1978 250cc World Championships on his KTM motorbike.

Find out what happened in the following years

Go to 1975