1964 The idea of taking the field with their own off-road model was born at the end of the summer of 1964. The engine was prepared in Bologna while in the Bergamo workshop Franco Dall’Ara took care of the frame assembly. To save time he did not hesitate to use the hubs and other cycling components from Stornello and the first prototype rapidly took shape and was tested in Bergamo competitions. At its debut it was ridden by Tullio Masserini on 18th october 1964 for the 2nd Trophy of Sorisole comune (Bergamo province) National Regularity trial. The trial was won by Eugenio Saini and Tullio Masserini was placed ninth.
A few days later, the 15th November 1964, always on the seat of that first Morini 125cc prototype, Tullio Masserini participated in the 4th edition of ‘Cavalcata delle Valli Orobiche’ coupled with the many times world champion Giacomo Agostini, also on a Morini and also therefore one of the testers of the machine.
1965 The first tests were more than satisfactory and the Bologna technicians pulled out all the stops to create the new bike which was not simply a derivation of the road version but had all the essential requisites of an off-road machine.
In the spring of 1965 Morini took the field with a first group of prototypes, from 125 to 150cc derived from the Morini Corsaro stradale, already using all the technical and aesthetic modifications typical of the off-road Morinis.
The Ronzani frame in single tubing with double cradle screwed in downtubes was powered by a very good classic 4 stroke motor with aluminium head and cylinder and an iron liner (bore 56mm and stroke 50mm, giving 123.15cc) generating almost 10 horsepower. Distribution was through head-mounted valves, vertical and paralle,l driven by pushrods and rockers and with the crankshaft in the block where the 4 speed gearbox was to be found. The exhaust was open and exiting on the right hand side.
The petrol tank was derived from the road model and had a striking peculiarity. A small oil tank was located within it to be used for oiling the chain and this also had a second cap located behind that used for petrol. This unusual and rather makeshift measure could be said to be an intelligent use of an amendment which for the designer had quite different objectives. Initially in fact the tube which vertically crossed the petrol tank was meant to be a breather on the head of this the filter of the Dell’Orto F20 was to be positioned like a mushroom.