The Sinclair c5 is a 3-wheeled, battery operated vehicle invented by Sir Clive Sinclair. The C5 is a recumbent tricycle steered by handles on either side of the driver’s seat, and it may be either pedaled or battery powered.
The Hawk Junior 60 is a small snow bike weighing barely 100 lbs., built for kids 5 to 10 years old wishing to move and play in the snow. The seat height is 31”. It is fitted with a tuned pipe, silencer, and diaphragm carburetor.
In 1940, Marcel Mennesson had a prototype built for a bicycle equipped with a motor on the front wheel. The 38cc engine was outfitted with a roller transmission, carburetor and tank, and mounted on the front 700-millimetre wheel.