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 for engine no. 553, detailing the power curve, oil pressures, and induction depression.
| Identifier | ExFiles\Box 92\2\ scan0018 | |
| Date | 4th September 1928 | |
| SUPER SPORTS ENGINE POWER CURVE. ENGINE No 553. COMP. RATIO = 4.5. CLAUDEL HOBSON CARBURETTOR. HOT SPOT (WATER) IN ACTION OPEN EXHAUST. BRAKE HORSE POWER R.P.M. OF ENGINE. DEPRESSION (INCHES OF MERCURY) OIL PRESSURE (LBS. PER SQ. IN.) INDUCTION PIPE DEPRESSION. MAIN OIL PRESSURE. OIL PRESSURE TO ROCKERS. V412 4-9-28 ROLLS-ROYCE, LIMITED. PRINT ROOM, 5 SEP 1928 | ||