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
Astro Bicycle Engines
A Brief History of the Italian Marque
The Astro auxiliary motor is a horizontal single cylinder 47cc two-stroke. Another source indicates production until 1955.