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).
Progress with an oil plunger scheme and piston castings to cure engine knock.
| Identifier | ExFiles\Box 35\2\ scan 150 | |
| Date | 9th October 1919 | |
| Contd. -2- EH2/LG9.10.19. when picking up from slow speed on a car. We feel that there are possibilities with this oil plunger scheme. The results so far are that we have been able to cure several knocks but on another piston which had more than the standard amount of clearance, we were not successful in curing the knock. We have some piston castings now which are suitable for making a permanent scheme of this oil pad. As soon as possible we shall get a complete set running on a car. EH. | ||