Made by BSA. It what started the modern day advanced design for motorcycles. The design was adopted by a few manufacturers after 1945 as a progressive alternative to the long established single-cylinder, chain-driven type of machine. The large-section tires, used in conjunction with the telescopic front forks and sprung rear frame, made the S7 one of the most comfortable and most advanced motorcycles ever designed for long-distance touring for that era. The Japanese took us for a ride from there and eventually HD caught up with the plan...!!! Do you see a resemblance to the softail here?