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 various damper settings on vehicle stability and component movement.
| Identifier | ExFiles\Box 27a\1\ Scan072 | |
| Date | 14th July 1932 guessed | |
| -4- (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. 4 7/8 lever The results were identical with the third 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, on-ly 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. ----------- The results of these tests are :- same road (1) Compared with 19-EX taken over/No.3 test, gives 10% steadier radiator movement. No appreciable difference in steering joggles. Wing movement 10% more. (2) The value of the radiator as a damper mounted on the engine taking the results of No.1 and No.3 test is 30%. | ||