Detonation and ignition settings following a 3,176-mile continental road test for a Wraith.
| Identifier | ExFiles\Box 7\1\ 600b 27 G V1 Mx Car-page56 | |
| Date | 20th September 1938 guessed | |
| -4- A copy of E's report on 3,176 miles running on the Continent is attached. With regard to detonation, prior to the car being handed over to E. {Mr Elliott - Chief Engineer} we had been carrying out some experiments with the ignition setting, and unintentionally this had been left 10° early. In the moist atmosphere prevailing locally at the time there was no detonation. The ignition has now been altered to the standard setting, and with this setting Wraith is very free from detonation. --------------------- [Signature] | ||
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).