Maintaining their preference for the opposed twin cylinder design, Coventry Victor Motor Co built a twin cylinder diesel in the early 1930s known as the Cub. The design of the engine was illustrated in a GB patent by W.A. Weaver, M. Hamilton-Fletcher, and Victor Oil Engine Co in 1933. Bristol Tractor pictured a Cub-engined version of their tractor in 1933, though they fitted several different engines and it's not clear how many tractors were produced with the Cub engine. In 1935 the Coventry Victor Cub engine was available as the 19.5 hp Cub and 22 hp Cub Senior (10HP and 12HP nominal rating), and was described as originally having been designed for marine work.