Old type vee with bevel drive cams, bit of a beast with clunky gearbox, weak clutch and fragile crank, not to mention self-igniting electrics and back breaking suspension. Expect a major rebuild around 25000 miles or earlier if poor oil’s used. S and SS versions were hot cafe racers with leading edge handling at the time, somewhat finicky Desmo motors and the kind of minimalism that appeals to masochists. Some stock 750 models with SS clothes at the latter’s prices, so beware.