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).
Instruction memo reporting on the performance of experimental pistons, noting increased vibration in a demonstration car.
| Identifier | ExFiles\Box 77\3\ scan0088 | |
| Date | 19th January 1920 | |
| R.R. 238 (24 B) (PP. 776. 26.3.13) E.P. 3883. E.H. X.5751 Dloase note car to enter 12.noon 19/ YCP 19/1/20 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Col Harker. (for Mr Platford). 19-1-20 19 Order No. Customer's No. re Ex. Pistons. During the past week the Demonstration Car covered 596 miles. I have carefully watched the behaviour of the Pistons & have not detected any knocks either when the car was starting up from cold or when pulling hard. The period of vibration when picking up from 15 to 20 m.p.h. is certainly more pronounced than it was before these pistons was fitted. Signed H.{Arthur M. Hanbury - Head Complaints} Clarke This Sheet must be filed on completion of the work. | ||