Bristol Mercury Radial Engine Maintenance Service Manual DVD
Types VII VIII IX, Maintenance Notes, dated 1937 on computer disc
From a period . , fascinating details on this famous engine - maintenance, components, service and much more
Schematic layouts, illustrative drawings, descriptions, high quality archive, probably the most comprehensive technical breakdown on this famous engine
A Fascinating part of Aviation History
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The Bristol Mercury was a nine-cylinder, air-cooled, single-row, piston radial engine. Designed by Roy Fedden of the Bristol Aeroplane Co it was used to power both civil and military aircraft of the 1930s and 1940s. Developed from the earlier Jupiter engine, later variants could produce 800 horsepower (600 kW) from its capacity of 1,500 cubic inches (25 L) by use of a geared supercharger.
The Mercury was developed by the Bristol Aeroplane Company in 1925 as their Bristol Jupiter was reaching the end of its lifespan. Although the Mercury initially failed to attract much interest, the Air Ministry eventually funded three prototypes and it became another winner for the designer Roy Fedden.
Instead of designing an entirely new block, the existing Jupiter parts were re-used with the stroke reduced by one inch (25 mm). The smaller capacity engine was then boosted back to Jupiter power levels, while running at higher rpm and thus requiring a reduction gear for the propeller. The same techniques were applied to the . Jupiter-sized engine to produce the Pegasus.
In 1938 Roy Fedden pressed the Air Ministry to import supplies of 100 octane aviation spirit (gasoline) from the USA. This new fuel would allow aero engines to run at higher compression ratios and supercharger boost pressure than the existing 87-octane fuel, thus increasing the power. The Mercury XV was one of the first British aero engines to be type-tested and cleared to use the 100-octane fuel in 1939. This engine was capable of running with a boost pressure of +9 lbs/sq.in and was first used in the Blenheim Mk IV.
Mercury was licence-built in Poland and used in their PZL P.11 fighters. It was also built by NOHAB in Sweden and used in the Swedish Gloster Gladiator fighters and in the Saab 17 dive-bomber. In Italy, it was built by Alfa Romeo as the Mercurius. In Czechoslovakia it was built by Walter Engines. In Finland, it was built by Tampella
AC applications included - Airspeed Cambridge Blackburn Skua Boulton Paul P.10 Bristol Blenheim
Bristol Bolingbroke Bristol Bulldog Bristol Bullpup Bristol Type 101
Bristol Type 118 Bristol Type 133 Bristol Type 142 Bristol Type 146 Bristol Type 148 Breda Ba.27
Fairey Flycatcher Fokker D XXI Fokker G.1 General Aircraft Hamilcar X Gloster Gamecock Gloster Gladiator