Origin
Rolls-Royce realised that the Napier Lion engine used in the 1927 Supermarine S.5 Schneider Trophy winner had reached the peak of its development, … 展开

New airspeed records were set after the 1929 and 1931 Schneider Trophy contests, both achieved using the R engine. In the two decades before World War II, the quest to break … 展开

Aircraft
• Supermarine S.6
• Supermarine S.6A
• 展开

Data from Lumsden and Holter.
General characteristics
• Type: 12-cylinder, supercharged, liquid-cooled, 60° "V", aircraft piston engine
• Bore: … 展开

The Schneider Trophy was a prestigious annual prize competition for seaplanes that was first held in 1913. The 1926 race was the first where all the teams fielded pilots from their armed forces, the Air Ministry financing a British team known as the High … 展开

Production summary
Nineteen R engines were produced at Derby between 1929 and 1931, all given odd serial numbers. This was a Rolls-Royce convention when … 展开

R25
The Royal Air Force Museum London at Hendon has a Rolls-Royce R on display (museum number … 展开