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).
Graph detailing Gearbox Control Tests for a 20/25 HP oil pump with specific clearances and oil temperature.
| Identifier | ExFiles\Box 179b\4\ img009 | |
| Date | 3rd April 1933 | |
| GEARBOX CONTROL TESTS TO MEMO FDY 3/M 27-3-33 TESTS TAKEN WITH 20/25 HP OIL PUMP - .003 RADIAL - .004" END CLEARANCE CASTROL XL 70°C PUMP INLET TEMPERATURE DELIVERY PRESS. 0 LB/□ 100 200 300 3-4-33 2000 1500 | ||