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).
Increase to the automatic ignition advance on the 20HP model to reduce detonation.
| Identifier | WestWitteringFiles\Q\July1927-September1927\ Scan025 | |
| Date | 14th July 1927 | |
| TO HS.{Lord Ernest Hives - Chair} [crossed out] BY.{R.W. Bailey - Chief Engineer} [crossed out] EFC. } FROM R.{Sir Henry Royce} R2/M14.7.27. 20HP. - AUTO: IGNITION ADVANCE. X5685 My experience with this suggests that the auto: advance should be increased so that rather too much retarded, to reduce risk of detonations, as is so successful with Phantom. R.{Sir Henry Royce} | ||