Power curve graph comparing BV and B60 engine units.
| Identifier | ExFiles\Box 123\5\ scan0292 | |
| Date | 1st February 1939 guessed | |
| CURVE 6 COMPARISON OF BV UNIT AND B60 UNIT (POWER.) BOTH UNITS WITH STD. B.V. SYSTEM 2-1 1/2 S.U. CARBS. ① B60 - OPEN EXHAUST OPENED THROAT Po 292 AEROLITE PISTONS FLUSH WITH TOP OF BLOCK 6·4:1 COMPRESSION RATIO SODIUM FILLED EXHAUST VALVES VALVE TIMING ·030 CLCE IO·8° PTDC EO 44° BB } EB4026 IC·28°PBDC EC 4° BTDC } (1a) NON DETONATING POWER REDLINE (TEST BED EXHAUST) ② BV - OPEN EXHAUST - STD. WRAITH HEAD AEROLITE RAISED CROWN PISTON 170-6·5:1 RATIO. STD. SOLID EXHAUST VALVES VALVE TIMING ·030 CLCE IO·1° PTDC EO 46° BBDC } ECD.673 IC 50° PBDC EC 7° PTDC } SHAFT (2a) NON DETONATING. POWER REDLINE (TEST BED EXHAUST SYSTEM) B.H.P. AND M.E.P. R.P.M. IGN. ADVE. BTDC | ||
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).