Here is a picture of a very rare racebike the Barton square four it is a 750 cc disc-valve water-cooled two-stroke. Barton used the design of the Suzuki RG500 engine but made it better and more reliable. Suzuki used Bartons

Found at http://yorkshireferret.blogspot.co.uk/2012/02/barton-motors-sparton-phoenix-and-more.html Barton Motors was started by Barry Hart and Tony Ryan. The Barton name is derived from the first name of the two company founders. Barry and Tony started the company by investing £15 each, in order to