1977: the all-new V50 and its smaller V35 sibling went into production although very few were built that year. 45bhp at 7500rpm, 10:8:1 compression, two Dell’Orto VHB 24F carbs, dry weight 152kg, top speed 105mph
1979: Mk2 introduced with deeper sump, raised oil capacity, different front discs, revised cosmetics
1981: the Mk3 arrived with bigger valves and larger 28mm ‘round’ carbs instead of the original square-slide items. Gear selection was improved, compression lowered slightly to 10.4:1, weight went up by 6kg. New points ignition, saddle and silencers introduced
1981: the Monza reached the UK although it first appeared a year earlier on the Continent. Styled as a sportster with headlamp cowl, bigger 3.5-gallon fuel tank, upswept pipes, clip-ons and rearsets. Now 160kg, cost £200 more than the base model
1984:…