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).
Cross-sectional diagram of a Torsional Exciter.
| Identifier | ExFiles\Box 132\1\ scan0153 | |
| Date | 20th September 1939 | |
| LEAD BRONZE BEARINGS ON HARDENED GEAR SPINDLES. APPROX. 12" DIAMETER DRIVE SHAFT. SEAL SUN GEAR GEAR RATIO 35 TO 12 TORSIONAL EXCITER 5 PAIRS UNBALANCE WTS THUS 5 PINIONS BRACKET FOR MIRROR FLANGE CLAMPED TO C'SHAFT SPLIT CASING. A (TENDENCY TO CRACK HERE) POSITION OF BOB-WEIGHTS OIL PUMP CONNECTIONS Sk. 2 OLLEY. SEP 20/39. | ||