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 plotting B.H.P and B.M.E.P against R.P.M., with engine specifications and a timing diagram.
| Identifier | ExFiles\Box 85\4\ scan0033 | |
| Date | 23th May 1933 | |
| UNIT C.10 BENTLEY RMB 14 MAY 23 / 33 COMP RATIO 6.5 | TREP INLETS CAMSHAFT E.59139 (.137) 2 S.U. (1.375) CARBS ON PIPES E.S.9292/3 MOD EX/.040% ① BALANCE RESTRICTION Y/544 (.000") ② Y/558 (.300) VENTURI TS/9B B.H.P. R.P.M. B.M.E.P. INDN. DEPN. "Hg TDC B.D.C. (TAPPETS AT .020) 3 1/4° 6 1/2° 2 1/2° MAX. 3.5% CTS{C. Trot Salt - Carburation} / 70 | ||