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 detonation and roughness with various governor and head configurations, including waveform traces.
| Identifier | ExFiles\Box 101\2\ scan0142 | |
| Date | 28th June 1938 guessed | |
| Left Margin: 17° ADV BTDC Right Margin (written vertically): ROUGHNESS FROM SEPARATOR Table Headers: 5-40 MPH, 5-70 MPH, MAX SPEED, DETONATIONS FADE OUT, INTENSITY OF DETONATIONS. Table Content: Row 1: STD GOVERNOR. | TURB HEAD | 16.1: | 99.7: | 75.0: | 17s" | LOUD. Row 2: DETURB HEAD | 15.7: | 92.9: | 77.25: | 16s. | Loud. Row 3: SPECIAL GOVERNOR | TURB HEAD | 15.6: | 97.0s" | 75.5: | 13s. | Loud. (Annotation on waveform: 31) Row 4: I. WALLER | DETURB HEAD | 16.8: | 93.55s. | 75.5: | 13s.. | Loud. (Annotation on waveform: 11) Row 5: SPECIAL GOVERNOR. | TURB HEAD | 16.4: | 97.1: | 75.0: | 17s. | Loud. (Annotation on waveform: 17) Row 6: H.F. Hamilton | DETURB HEAD | 15.5: | 90.5: | 77.25: | 18s" | Loud. | ||