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).
Fix for propeller shaft vibration issues when the vehicle is loaded.
| Identifier | ExFiles\Box 146\5\ scan0293 | |
| Date | 14th March 1940 | |
| W/P. To Sr. from Rm.{William Robotham - Chief Engineer} 1245 + 437 Rm.{William Robotham - Chief Engineer}4/MH.{M. Huckerby}14.3.40. PROPELLOR SHAFT PERIODS. You may find that your B.V. will have a propellor shaft period when loaded up with 4 people. If it is free from this trouble with no load, measure the propellor shaft angle with the car empty, then load it up and re-set the propellor shaft angle to the original position by raising or lowering the centre prop. shaft bearing. This should reduce the trouble. We are sending you some pieces to isolate the bearing, but they will not be available for three or four weeks. Rm.{William Robotham - Chief Engineer} | ||