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 the results of vehicle dynamics and component movement under various damper settings.
| Identifier | ExFiles\Box 28\5\ Scan091 | |
| Date | 14th July 1932 guessed | |
| (4) (1) The movement of the radiator sideways was 30% more rapid and devloped periods. (2) The bonnet definitely knocked to the same extent practically as with the first test. (3) Movement of the front wings was 10% increased. (4) Steering joggles 10% worse than with torque reaction dampers choc-a-bloc. (5) Movement of scuttle was increased 15%. ---------- (Test 5). Conditions. Torque reaction dampers set to 10 lbs. 1st Test repeated, rough road. The results were identical with the 1st Test. ---------- (Test 6) Conditions. Torque reaction dampers set choc-a-bloc, i.e. 80 lbs, rough road. The results were identical with the 3rd Test. This test gave the best all round results. ---------- (Test 7) Conditions. Same as test 6, but with front Hartford Shock dampers slacked right off, rough road. There was no appreciable difference, only that the front of the car was not so stable and steering joggles increased. ---------- (Test 8) Conditions. Torque reaction dampers slacked right off. Bonnet taken off to watch engine movement, test on rough road. The engine unit jellied and period set up identical with the radiator movement, as reported during first test. | ||