Small vee twin with shaft drive and straightforward pushrod engine. Agile, lacks the usual Italian temperament except for clunky gearbox that goes nasty with age. Valvegear in trouble by 30,000 miles, clutch often burnt out by 20,000 miles. Mk.3 and cafe racer Monza versions had useful bit of extra power. Monza’s tended to be thrashed which turned them fragile and chassis degraded rapidly – few left on the road. A few years ago there were lots of rats but now mostly just the odd low miler around.