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).
Engine detonations on a Hispano engine.
| Identifier | ExFiles\Box 22\1\ Scan281 | |
| Date | 25th January 1927 | |
| X4214 Re detonations on Hispano The engine detonates with the water boiling to the same degree as with water at normal temperature. In both cases the detonation dies out at 40 MPH, picking up from 10, 20, 30. MPH. JHH. Please file in Hispano detonations | ||