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).
Letter discussing chassis vibration test results and inquiring about the use of aluminium drums with cast iron linings in the US.
| Identifier | ExFiles\Box 170\2\ img113 | |
| Date | 4th November 1931 guessed | |
| -2- You will therefore see that we do not get results quickly because we are making good motor cars, and we expect your results are due to the same cause. We find that if we run at 150 R.P.M. of the drums which is equivalent to 21 m.p.h. with 2" cams, we get a very violent movement of the whole chassis, but this is such an abnormal state of affairs that we have not used it for endurance running but only for the observation of fender shake etc. Can you give me any information as to whether an aluminium drum with cast iron lining is being used on any cars in the States? Yours sincerely, | ||