The German made Windhoff of 1927
was an innovative machine. With an oil-cooled 4 cylinder engine which also acted as a load bearing element, instead of a frame, the Windhoff introduced features common on many modern machines. In addition the cylinder head supported the tank, seat and the front fork. The Windhoff had a dry multiplate clutch, unit gearbox, front wheel brake and a rear brake which acted on the shaft drive. The front suspension had leaf springs and shock absorbtion.