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 comparing a C.I. unit with a C/R & C.XI unit over 10,000 miles.
| Identifier | ExFiles\Box 6\7\ 07-page168 | |
| Date | 25th October 1931 | |
| COMPARISON OF C.I. UNIT WITH 5.70 C/R & C.XI UNIT FOR 10,000 MILES P.II COMPLETE SHORT TYPE SILENCER USED IN BOTH CASES C.I. UNIT 112' SHAFT. HIGH LIFT ROCKERS C.XI SCH 1542/3 CAMSHAFT PISTONS E.57122 STANDARD 5% LARGER CARB. B.H.P. COMPRESSION PRESS LBS/SQ' R.P.M. IND: DEPN: INS: HG: B.M.E.P. WITH P.II SILENCER | ||