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).
Attaching curves showing the ignition advance required by the Peregrine engine.
| Identifier | ExFiles\Box 179b\2\ img232 | |
| Date | 29th December 1938 | |
| ORIGINAL To R.{Sir Henry Royce} from He/Rs.{Sir Henry Royce's Secretary} c. to SS.{S. Smith} W'r.{Sir Henry Royce} c. to E.{Mr Elliott - Chief Engineer} DA.{Bernard Day - Chassis Design} c. to HY.{Tom Haldenby - Plant Engineer} HdV. He/Rs.{Sir Henry Royce's Secretary}6/KT. 29.12.38. X4027 We attach herewith curves showing the ignition advance required by Peregrine, and the advance characteristics we can obtain by minor modifications to the governor. The ultimate curve required will be better estimated when the degree of detonation taking place, at the conclusion of 10,000 miles running in France with this head, has been established. He/Rs.{Sir Henry Royce's Secretary} | ||