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 log comparing engine performance and detonation characteristics for various governor and cylinder head configurations.
| Identifier | ExFiles\Box 101\2\ scan0146 | |
| Date | 28th June 1938 guessed | |
| Left Margin: 11° ADV BTDC Table Headers: 5/40 m.p.h., 5-70 m.p.h., MAX SPEED., DETONATIONS FADE OUT:, INTENSITY OF DETONATIONS Table Content: Row 1: STD GOVERNOR, TURB HEAD, 16.08s, 50.48s, 74.2 MPH, 14 MPH, FAINT Row 2: [STD GOVERNOR], DETURB HEAD, 16.25s, 95.35s, 76.2", 11", FAINT. Row 3: SPECIAL GOVERNOR, TURB HEAD., 16.2s, 95.8s, 79.5", 10", FAINT Row 4: I. WALLER, DETURB HEAD, 17.05s, 97.9s, 75.25", 8", V.{VIENNA} FAINT Row 5: SPECIAL GOVERNOR, TURB HEAD, 17.0"s, 99.2s, 77.0", 12", FAINT. Row 6: HF{H. W. Frost - Coachwork Inspector} HAMILTON, DETURB HEAD, 16.15s (3), 96.0s (2), OK 76.0" (2), 12" (4), FAINT. Right Margin (Vertical Text): ROUGHNESS FROM 5 MPH IN TOP | ||