The 4th test, detailing observations on torque reaction, booms, steering, and wing jellying.
| Identifier | ExFiles\Box 11\3\ 03-page394 | |
| Date | 4th July 1931 guessed | |
| (4) 4th Test. Conditions. Torque reaction dampers set to have a load of 38 lbs taken at a leverage of 5.25 inches. Torque reaction. The effect was of less amplitude but 25% more rapid. The gear lever movement had less amplitude but more rapid. Booms. In Front Seats. These were still more pronounced. The periods started at 9 MPH with a maximum at 10 and finished at 12 MPH. In Rear Seats. These became more of a rumble, was more noticeable between the speeds of 20 and 40 MPH and at 60 MPH. Steering. We could not detect any difference. Jellying of the front wings. These were 10% less movement than the 3rd Test. | ||
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).