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 on vehicle stability and vibration with adjusted torque reaction dampers.
| Identifier | ExFiles\Box 27a\1\ Scan071 | |
| Date | 14th July 1932 guessed | |
| -3- (Test 3.) Conditions. Torque reaction dampers tightened up choc-a-bloc, i.e. 80 lbs load, test carried out on rough road. (1) Movement of radiator sideways damped 25% more than previous test, hardly noticeable. (2) Bonnet movement endways was respectively less. There was no definite bonnet knock on the scuttle, a slight rumbling noise as it lightly touched the scuttle. (3) The movement of the headlamps and front wings was not appreciably affected. They remained steady. (4) The car under these conditions was a decided improvement. (5) With engine running idly the torque reaction period on the wings was 50% steadier than when first received. (Test 3) cont'd.{John DeLooze - Company Secretary} Conditions as other test but carried out on tarmac road up to speeds of 70 m.p.h. (1) Radiator as steady as any production model. (2) Front wings almost steady, no sign of jellying. (3) Headlamps steady. (4) Steering 10% less joggles, and felt steadier at all speeds, chiefly due to the setting of the shock damper. --------- (Test 4.) Conditions. Torque reaction dampers set to 35 lbs load, test carried out on rough road. (1) The movement of the radiator sideways was 30% more rapid and developed 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. | ||