Brough Superior Motorcycles
Early models include the Brough Superior Mark I Sidevalve, Mark I Overhead, Mark II Standard and Mark II Sports. Early to mid manufacture included the Overhead 500, 680 S.V. 5.15, and 750 Side Valve, but these were not popular and were dropped from production.
The following four models represent the bulk of manufacture. Most were custom built to order and many variations were made:
- The SS100 (Super Sports), powered by J.A.P. (J. A. Prestwich of Tottenham) or Matchless 1000 cc overhead valve V-twin engines. Approximately 383 were manufactured from 1924 to 1940.
- The SS80 (Super Sports), powered by J.A.P. or Matchless 1,000 cc sidevalve V-twin engines. Approximately 1,086 were manufactured from 1922 to 1940.
- The SS680 O.H.V. (Super Sports), powered by J.A.P. 680 cc overhead valve V-twin. Approximately 547 were manufactured from 1926 to 1936.
- The 11.50, powered by J.A.P 1096 cc sidevalve 60° V-twin engines. These were primarily designed for sidecar and police use. Approximately 308 were manufactured from 1933 to 1940. The model name refers to the horsepower rating of the engine, 11 RAC (Royal Automobile Club), 50 bhp (37 kW). In reality these engines produced 32 bhp (24 kW). Tax horsepower ratings were required by manufactures for tax purposes. RAC HP equals the piston diameter squared times the number of cylinders divided by 2.5.
Brough Superior produced many other experimental, show, and racing models. These include:
- Golden Dream. This was powered by a vertically stacked twin crankshaft opposed four cylinder engine. George Brough called this a "flat vertical" engine. The bike was finished differently and was unique for the marque as it was painted gold and was shaft driven.
- Straight Four Combination. This bike was powered by a modified Austin 7 automobile engine. The transmission also came from an Austin 7. The Straight Four Combination was an inline four-cylinder motorcycle with shaft drive. It had two rear wheels that were mounted on each side of a cast drive unit. This motorcycle was made for sidecar use.
- Pendine. These were built in the early 1930s and had a guaranteed top speed of 110 mph (180 km/h). They were based on the SS100 model but with higher performance modifications to the engine. A well known racer, Barry Baragwanath, installed a supercharger on one, and it is now known as "Barry's Big Blown Brough". Noel Pope bought the motorcycle and in 1939 set two lap record with it at Brooklands; 106 mph (171 km/h) with sidecar, and 124 mph (200 km/h) in solo configuration, which exceeded the previous record set in 1935 by Eric Fernihough also on a Brough Superior.
George Brough was known for his dedication to his vehicles and customers. He, and later Albert Wallis, continued to service Brough Superiors after production ceased, making parts until 1969. Production of bikes never resumed after WWII.
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