From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Engine testing, detailing oil and water leaks and performance metrics over multiple 10-hour hangar tests.
| Identifier | ExFiles\Box 36\2\ scan 121 | |
| Date | 3rd May 1927 guessed | |
| -3- Contd. pump etc. is lower than that of the test bed, due to the increased slip stream velocity and exposed conditions. ADDITIONAL OIL LEAKS. (1) Oil is being drawn from the thrust bearing casing in the nose. 5th 10 hour (Hangar). Full throttle r.p.m. at commencement 2200 " " " end 2200 Average fuel consumption .52 pints/BHP.hr. " oil " 3.0 pints/hr. Temp. rise water. 100C. " " oil. 50C. Main press. 74 lbs/in² Relief 5. WATER LEAKS. This is the first case of water leaks and they occur at the bases of cylinders B1 and A6. around the rubber rings. These water leaks cease however when the engine is running. 6th 10 hours (Hangar). Full throttle r.p.m. at commencement 2200 " " " end 2200 Average fuel cons. .52 pints/BHP.hr. " oil " 2.8 pints/hr. Temp. rise water. 110C. " " oil. 50C. Press. Main 73 lbs/in² Relief 5. ADDITIONAL OIL LEAKS. (1) B bank upper bearing housing for camshaft drive joint to cylinder block. ADDITIONAL WATER LEAKS. (1) Bases of cylinders B2 and B6 } When engine is stationary. Previous leaks at B1 and A6 } rather better. 7th 10 hours (Hangar). The engine was now fitted with a 4-blader tractor propeller trimmed to give 2100 r.p.m. at 430 BHP. Contd. | ||