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).
Power curve test data for a Hispano Suiza engine.
| Identifier | ExFiles\Box 22\1\ Scan115 | |
| Date | 19th February 1924 | |
| X4214 19.2.24. POWER CURVE OF HISPANO SUIZA TABLE DATA: Headers: Tacho: Revs., Engine revs., Drum R.P.M., CUT-OUT CLOSED. (Load., H.P., Load., H.P.), CUT-OUT OPEN. (Load., H.P., Load., H.P., M.P.H) Row 1: 416, 500, 104, 122, 18.1 | 126, 18.7, 14.5 Row 2: 620, 750, 155, 122, 27, 117 | 126, 27.9, 22 Row 3: 828, 1000, 207, 120, 35.5, 112 | 124, 36.7, 115, 29 Row 4: 1036, 1250, 259, 117, 43.3, 110 | 120, 44.4, 112, 36 Row 5: 1244, 1500, 311, 114, 50.6 | 119, 52.9, 43.5 Row 6: 1448, 1750, 362, 110, 56.9 | 115, 59.5, 51 Row 7: 1656, 2000, 414 | 58 Row 8: 1864, 2250, 466 | 65 Row 9: 2072, 2500, 518 | 72 TABLE FOOTER NOTES: Under CUT-OUT CLOSED columns: 29.11.23 30.11.23. Scored cylinder. Under CUT-OUT OPEN columns: 29.11.23 30.11.23 Scored cylinder. ADDITIONAL DATA: Top gear ratio = 3.375 : 1 Road wheels : R.P.M. Drum R.P.M. : = 10 : 7. | ||