The featherbed frame was a motorcycle frame invented by the McCandless brothers and offered to the British Norton motorcycle company to improve the performance of their racing motorcycles in 1950. It was considered revolutionary at the time, and the best handling frame that a racer could have.

Who designed the Featherbed frame?

The featherbed frame was initially designed for racing use. It features two loops of steel tubing encircling the engine and a swing arm that uses hydraulic shock absorbers to soften the ride. Britain's Norton Motorcycles Ltd. was responsible for the development of the featherbed frame.

What is half duplex cradle frame?

Half-duplex cradle or double cradle

The motorcycle engine is held in a double cradle with a single spine and single downtube.