Classic Two Stroke Compendium
Barton square four
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
design in later RG500 models. Two of these bikes were made by Barton, they
wanted to race the bikes in the F750 class but that never took place. The
bikes were used in the 1980 film Silver Dream Racer (see http://www.imdb.com/title/tt0081517/).
They were ridden by Roger Marshall. After the film they were bought by Erik
Buell, who still is the current owner. He was planning to race them in the
AMA F1 class just before they banned them for this class.
One of the founders (Graham Dyson) of Barton Motors still runs a business
today, they make very trick gearboxes for Suzuki RG500 and TR500 see:
Barton also made an engine which was based on the Suzuki GT380, they made
watercooled barrels and heads for this bike. Barry Sheene broke the lap
record at Brands Hatch. In a spondon frame it was known as Sparton, they
made 26 bikes and 8 spare engines.
This entry thanks to Bas Völlink from
Deventer in The Netherlands
(c) www.ozebook.com 2004