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).
Test results for the Spectre Gear-Box oil feed to the 3rd motion shaft in 4th speed.
| Identifier | ExFiles\Box 94\1\ scan0268 | |
| Date | 3rd December 1935 | |
| SPECTRECodename for Phantom III GEAR-BOX L.H.S OIL FEED TO 3RD MOTION SHAFT GEAR-BOX TEST IN 4TH SPEED WAKEFIELD'S HIGH-PRESSURE HEAVY OIL USED SMALLER SCOOP FITTED DELIVERY COMMENCED AT 1500 RPM N SCH 4668. MODIFIED TO RM{William Robotham - Chief Engineer} 33, FIG.3. RPM AT ENGINE END | INITIAL TEMP °C | FINAL TEMP °C | TIME RUN PER TEST | DELIVERY CCS/HR. 2,000 | 39 | 66 | 1-0 HR | 160 3,000 | 66 | 88 | -55 MINS | 102 4,000 | 88 | 107 | 1-5 HR | 314 2,000 | 50 | 70 | 1-0 HR | 275 3,000 | 70 | 90 | 1-0 HR | 148 4,000 | 90 | 106 | -50 MINS | 367 4,000 | 106 | 108 | -50 MINS | 374 SHEET III (3 SHEETS) M.B. | ||