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 a 3 1/2 litre engine, comparing supercharged and unsupercharged variants.
| Identifier | ExFiles\Box 140\1\ scan0105 | |
| Date | 20th December 1934 guessed | |
| R.R. 3 1/2 LITRE ENGINE SUPERCHARGED BY GRAHAM - PAIGE BLOWER 5.5/1 S/C GEAR RATIO CARBS - UNSUPERCHARGED - 2 EXPANDING THROAT S.U.S CARBS - SUPERCHARGED - STROMBERG DOWNDRAFT HOT WATER IN SUPERCHARGE JACKETS SUPERCHARGED UNSUPERCHARGED B.M.E.P. B.H.P. "Hg BOOST PRESS CARB. DEPN - UNSUPERCHARGED R.P.M. B.M.E.P. & B.H.P. | ||