Featured Pages Tilly Shilling, Engineer She Made the Merlins Sing
Manx 30MKrieger-Gnadig First German Shaft Drive Motorcycles
KG (EN & ES)Humber WC HO Twins Advanced Machines of Edwardian Era
A supercharged four-cylinder 500cc engine with dual overhead camshaft and water cooling built by Valerio Riddle made a brief appearance at the 1928 Monza Grand Prix. It exloded on the first lap.