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).
Expressing a preference for the stroke proportions on a 5.5 engine, referencing the Kestrel engine.
| Identifier | ExFiles\Box 179b\1\ img162 | |
| Date | 16th November 1932 | |
| RG.{Mr Rowledge} FROM H.{Arthur M. Hanbury - Head Complaints} C. to BG. WOT. HS.{Lord Ernest Hives - Chair} AERO ENGINES. R1/M16.11.32. X2917 I don't like the idea of making the 5.5 engine (middle size) with 5.5" stroke, and should prefer its proportions to be the same as the Kestrel, about 6". Otherwise, I am very pleased for you to go ahead. R.{Sir Henry Royce} | ||