Performance graph comparing Downdraught and Standard carburettors on a Phantom II engine with a 5/1 compression ratio head and open exhaust.
| Identifier | ExFiles\Box 13\3\ 03-page277 | |
| Date | 26th February 1931 guessed | |
| COMPARISON OF DOWNDRAUGHT & STD. CARBURETTERS, ON PHANTOM II FITTED WITH 5/1 COMPn RATIO HEAD, OPEN EXHAUST, C/B.H.P., DOWNDRAUGHT CARB, STD. CARB, B.H.P., B.M.E.P, DOWNDRAUGHT, STD, R.P.M., B.M.E.P. LBS./SQ' | ||
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).