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).
Performance graph for Supercharged Unit B.12 comparing different engine configurations with a Graham Blower.
| Identifier | ExFiles\Box 140\1\ scan0129 | |
| Date | 30th January 1935 | |
| SUPERCHARGED UNIT B.12 PERFORMANCE WITH GRAHAM BLOWER (5.5/1 OVERALL GEAR RATIO) BLOWER IN POSITION 1. WITH SHORT INDUCTION PIPE. WATER HEAT TO PIPE JACKET, BUT NOWHERE ELSE. NO PACKING WASHER IN ROTOR CASING. A - BENTLEY C/S E.B. 1085, STD. TIMING, 1 7/8 S.U. CARB: C - 20/25 C/S E.59699, STD. TIMING, 1 7/8 S.U. CARB: E - 20/25 C/S E.59699, EARLY TIMING, 1 7/8 S.U. CARB: F - 20/25 C/S E.59699, EARLY TIMING, 42MM. STROMBERG CARB: SUPERCHARGED UNSUPERCHARGED C&F B.H.P BMEP "HG R.P.M. | ||