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).
Potential issues related to valve clearance, ignition timing, and tappets.
| Identifier | WestWitteringFiles\E\September1920\ Scan14 | |
| Date | 10th September 1920 | |
| To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} -3- R5/C10/9/20 Contd. to see if there is sufficient clearance in all the valves. I do not think it is a question of the disposal of the exhaust, but either a question of variation in the time of ignition or in the operation of the valves, probably owing to certain of the valves having something less than the standard clearance in the tappets. R.{Sir Henry Royce} | ||