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).
Graph of power curves for a 25 HP Japan Unit with a standard carburetter and 112° camshaft.
| Identifier | ExFiles\Box 6\7\ 07-page118 | |
| Date | 9th March 1931 guessed | |
| [ "GRAPH 1", "POWER CURVES", "25 H.P. JAPAN UNIT", "STANDARD CARBURRETTER", "112° CAMSHAFT", "B.H.P.", "R.P.M.", "B.M.E.P.", "COMPLETE STANDARD SILENCING SYSTEM", "OPEN EXHAUST" ], | ||