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 showing the gear lever torque required to disengage first gear relative to the torque applied to the third motion shaft.
| Identifier | ExFiles\Box 94\1\ scan0132 | |
| Date | 7th May 1935 | |
| SPECTRECodename for Phantom III GEAR BOX - 4HS{Lord Ernest Hives - Chair} TEST 3. GEAR LEVER TORQUE REQUIRED TO DISENGAGE 1ST GEAR RELATIVE TO TORQUE APPLIED TO 3RD MOTION SHAFT. 1ST MOTION SHAFT STATIONARY. MOTORINE "C" 20°C GEAR LEVER TORQUE - LB FT - 1ST GEAR. APPLIED TORQUE - LB FT - 3RD MOTION SHAFT HB{C. E. Harcombe} | ||