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 component movement and stability under various road conditions.
| Identifier | ExFiles\Box 27a\1\ Scan070 | |
| Date | 14th July 1932 guessed | |
| -2- (2) Torque reaction dampers set at 10 lbs. (3) Bonnet given normal clearance at either end. (4) Speed 30 - 35 m.p.h. Result. (1) The movement of the radiator sideways was of a slow period and small amplitude. It would scarcely have been observed without a mascot fitted. (2) Bonnet movement endways was very little. There was no lifting up at the back corners or front as was the case when received. (3) N.S. front wing movement was considerable. O.S. front wing was steady. (4) There was no appreciable difference in the steering joggles. (5) There was no sign of the slow wobble at 60 m.p.h. The steering was quite steady. On pot holey road. (Test 1) cont'd (1) Movement of radiator sideways 75% less than when received and the period of movement was appreciably slower. (2) Bonnet movement endways was 75% less. Bonnet knocks reduced by 75%. (3) N.S. front wing still flapped. O.S. front wing very little movement, no jellying. (4) Headlamps quite steady. (5) Movement of scuttle not affected. ----------- (Test 2) The N.S. front Hartford shock damper was checked up and found to have approx half the load of the O.S. It was therefore tightened up. The result was that the front of the car was more evenly balanced up and the N.S. front wing practically as steady as the O.S. ----------- | ||