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 report detailing observations on torque reaction, booms, wing jellying, and steering.
| Identifier | ExFiles\Box 11\3\ 03-page393 | |
| Date | 4th July 1931 guessed | |
| (3) 3rd Test. Conditions. Torque reaction dampers set to have a friction load of 30 lbs taken at a leverage of 5.25 inches. Torque Reaction. The effect of the torque reaction was of less amplitude. It started at 9 MPH, maximum 10 and finished at 13 MPH. This was considered to be quite passable. The gear lever period was of less amplitude. It started at 10, finished at 12, came on again at 13 and finished at 14. This would be considered to be good. Booms. In Front Seats. These were slightly more pronounced, 25% than 2nd Test. They started at 10 MPH was most pronounced at 25 and faded out at 40. On the retard there was a general rumble from 60 to 38 MPH. In Rear Seats. With the exception of a slight period at 20 MPH, it would be considered to be free from booms. Jellying of the front wings. This was 10% worse than the 1st Test up to 40 MPH and 20% worse at 60 MPH. The wings had a higher frequency throughout the range of speeds. Steering. The steering wheel oscillations were considered to be less, otherwise we could not detect any difference. | ||