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).
Power curve graph for a 4 1/4 Litre Bentley engine comparing two different induction system configurations.
| Identifier | ExFiles\Box 112\1\ scan0010 | |
| Date | 1st September 1940 guessed | |
| 4 1/4 LITRE BENTLEY POWER S. 32. COMP. RATIO:- 6.3:1 (EW.1296) ① STD. WRAITH INDN. SYSTEM (SINGLE D.C. 42 STROMBERG) ② AS ① BUT WITH SINGLE HORIZONTAL S.U. B III N°1 UNIT SPEC:- REDLINE PETROL COMPLETE B II EXHAUST SYSTEM R.{Sir Henry Royce} P. M.{Mr Moon / Mr Moore} B. M.{Mr Moon / Mr Moore} E.{Mr Elliott - Chief Engineer} P. | ||