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 comparison graph between a single SU carburetor and an RR updraught expanding carburetor.
| Identifier | ExFiles\Box 13\3\ 03-page385 | |
| Date | 17th February 1932 | |
| V1304 COMPARISON BETWEEN 2.800 BORE SINGLE SU CARB AND RR UPDRAUGHT EXPANDING CARB (LEC 29T5) TESTS WITH OPEN EXHAUST W.W. 114° (E.P.E.L.L.B) CAMSHAFT 4.8:1 COMPRESSION RATIO AREA PAST SU CARB = 1.9 ☐" " " RR " " = 2.9 ☐" BHP RPM SU RR MEP lbs/☐" INDUCN DEPN Ins Hg W.R.R 17.2.32 | ||