engine - 499cc/750cc, single-cylinder inlet over exhaust four-stroke launched - 1912-1923 bore and stroke - 85 x 132mm (5/6 hp) carburettor - senspray top speed - 83 mph (racing model)
rudge ulster - 1939
engine - 499cc, single-cylinder four-valve semi-radial overhead-valve four-stroke launched - 1929-1939 bore and stroke - 85 x 88mm compression ratio - 7.25:1 power - 45bhp @ 5300rpm carburettor - 1 1/16in amal top speed - 83 mph
rudge whitworth 250cc prototype
rudge whitworth prototype
1915 rudge multi tt, 500cc
1923 rudge twin, 998cc
1924 rudge 4 valve
it was called a rudge four, because of the four speeds and four valves, not four cylinders. this single cylinder 350 cc machine showed markedly superior performance to the competition on release, having more power than its 500 cc predecessor. rudge engineer, george hack, is said to have taken his design idea from the four valve head ricardo-triumph special of 1921, a one off machine. he designed a four valve head for rudge and in 1924 they produced their first four valve cylinder head on a 350 cc engine. the valves were arranged in parallel, and were not radial. in 1925, a 500 cc version with linked front and rear brakes appeared, and the big end bearings were now fed oil through the crankshaft pin. the old 350 cc was dropped in 1926. for 1928 rudge motorcycles were fitted with saddle tanks, and 8 inch internal expanding drum brakes. stanley glanfield designed a rudge for dirt racing, marketed from 1928 as the glanfield rudge.
1924 rudge 4 valve 4 speed, 500cc
1924 rudge whitworth 350
1928 rudge whitworth 500 special
Rudge Whitworth 500cc Roadster
probably from the last batch of 'flat tankers' ever made. By 1928 all other Rudge models had saddle tanks, hub brakes and splayed exhaust ports. Won the motor cycle class of the 500 km Nairobi to Mombasa Vintage rally in 1974 and has won awards more recently at the 'Africa Concours d'Elegance' in 2005 and 2007.
1931 rudge 250 radial
1932 Rudge Ulster
1936 rudge rapid
1936 rudge special
rudge entered the 1930's with two road going 499cc four valves models, the sporting ulster and the special, the latter with a slightly reduced compression ratio, over the following decade other 499cc models would both join and leave the range, but the ulster and special would remain at the core of the range. a feature of the range was the coupled brake system. 1932 witnessed the introduction of the lever operated centre stand with a foot operated gearbox becoming a universal feature of the range by 1934. detail changes occurred over the next couple of seasons but the 1937 season machines saw a significant change with the valve gear finally becoming enclosed. image provided by www.classic-auctions.com.
1937 rudge special
1937 rudge ulster
Rudge Whitworth Ulster
1938 Rudge Ulster
1938 rudge whitworth - rudge special
245cc, twin port, radial head sports machine.
1939 rudge special
1939 rudge ulster
the first machine to bear the ulster name emanating from the rudge factory was announced during 1928 in celebration of their success in that years ulster grand prix. the ulster became a fixture at head of the company's catalogue until production ceased in 1940, early versions featuring a pent roof four valve head which was replaced for the 1932 season with a radial four valve head with the option of a foot operated gear change becoming available in the same year. the valve gear remained exposed to the elements until 1937 when a simple cast alloy cover was adopted although the bronze cylinder head remained finally being replaced with a light alloy example in 1939. image provided by www.classic-auctions.com.
1940 rudge autocycle
1941 rudge autocycle
1951 cyclemaster 32cc on a period rudge ladies cycle