Cyclecars were propelled by single cylinder, V-twin or more rarely four cylinder engines, often air cooled. Sometimes these had been originally used in motorcycles and other components from this source such as gearboxes were also employed. Cyclecars were half way between motorcycles and cars and were fitted with lightweight bodies, sometimes in a tandem two-seater configuration and could be primitive with minimal comfort and weather protection. They used various layouts and means of transmitting the engine power to the wheels, such as belt drive or chain drive often to one rear wheel only to avoid having to provide a differential.