Tag Archives: GNAT

No Body One Brake – GN G.N.A.T.

GN cars founded by H.R. Godfrey and Archibald Frazer-Nash in 1910 were were made in London up until 1923 and were initially notable for being built with wooden chassis with chain driven JAP engines or belt driven Peugeot engines.

GN G.N.A.T., John Wiseman, Chateau Impney,

By 1919 GN adopted steel chassis and engines of their own design, I believe today’s featured GN G.N.A.T. special has a 1919 steel chassis that was lightened, shortened and lowered by E.G.Sharp who fitted a front axle with a wider track than the rear starting the work in 1925.

GN G.N.A.T., Richard Wiseman, VSCC, Prescott,

Sharp acquired an unusual 1088 cc / 66 cui aircooled V twin JAP engine for the car that featured modified Vitesse cylinder heads that dispensed with the original overhead cam shafts in favour of pushrod operated overhead valves.

GN G.N.A.T., John Wiseman, Chateau Impney,

It was only after the valve gear had been redesigned by E.G.Sharp that the twin carburetor engine produced any useful power.

GN G.N.A.T., John Wiseman, VSCC, Loton Park,

Since the chassis had been lowered a much smaller diameter clutch was fitted with a length of rope tied to the clutch pedal for the driver to pull if the clutch failed to engage properly.

GN G.N.A.T., John Wiseman, Chateau Impney,

Originally E.G.Sharp omitted any bodywork as was common practice in the period and had only one break drum operational on the rear axle to slow the car down.

GN G.N.A.T., Richard Wiseman, VSCC, Prescott,

The car is described in “Specials” by John Bolster as “Very fast, but only moderately reliable” with it’s most notable achievements being a fatest time of the day, FTD, recorded at Stalybridge in 1928 and a class win at Shelsley Walsh in 1930.

Richard Wiseman is seen driving the GN G.N.A.T wearing blue overalls at Prescott while John Wisemann wearing white overalls is seen driving the car at Chateau Impney and on the start line at Loton Park.

My thanks to Tim Murray for kindly lending me his copy of “Specials” 1971 edition by John Bolster.

Thanks for joining me on this “No Body One Brake edition of “Gettin’ a li’l psycho on tyres” I hope you will join me again tomorrow. Don’t forget to come back now !