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).
Sheet of performance graphs for Phantom II rear dampers under high pressure with various configurations.
| Identifier | ExFiles\Box 16\4\ Scan241 | |
| Date | 5th January 1931 guessed | |
| SHEET 5. P.II REAR DAMPERS Graph 1: S.S. REAR 80/85 LB HIGH PRESSURE. .025" DIA. AIR VENT. 70 R.P.M. 4" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = 3.8°" Graph 2: S.S. REAR 80/85 LB HIGH PRESSURE. .025" DIA AIR VENT. 130 R.P.M. 2" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = 2.97°" Graph 3: S.S. REAR 80/85 LB HIGH PRESSURE. .025" DIA. AIR VENTS. AIR VENT FILTERS FITTED. 450 R.P.M. 1" STROKE. 25°C. REFILL BALL VALVE LIFT .025" AREA = 1.70°" Graph 4: S.S. REAR 80/85 LB. HIGH PRESSURE. .025" DIA AIR VENT. H.P. VALVE DRILLED .032" DIA. 70 R.P.M. 4" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = 4.91°" Graph 5: S.S. REAR. 80/85 LB. HIGH PRESSURE. .025" DIA. AIR VENT. H.P. VALVE DRILLED .032" DIA. 130 R.P.M. 2" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = 2.21°" Graph 6: S.S. REAR. 80/85 LB. HIGH PRESSURE. .025" DIA. AIR VENT. H.P. VALVE DRILLED .032" DIA. 450 R.P.M. 1" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = 1.53°" Graph 7: S.S. REAR 80/85 LB. HIGH PRESSURE. .025" DIA. AIR VENT. H.P. VALVE DRILLED .055" DIA. 70 R.P.M. 4" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = 3.17°" Graph 8: S.S. REAR 80/85 LB. HIGH PRESSURE. .025" DIA. AIR VENT. H.P. VALVE DRILLED .055" DIA. 130 R.P.M. 2" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = 1.90°" Graph 9: S.S. REAR 80/85 LB. HIGH PRESSURE. .025" DIA. AIR VENT. H.P. VALVE. DRILLED .055 DIA. 450 R.P.M. 1" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = 1.73°" Graph 10: S.S. GEAR 80/85 LB. HIGH PRESSURE .025" DIA. AIR VENT. H.P. VALVE. DRILLED .093" DIA. 70 R.P.M. 4" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = .43°" Graph 11: S.S. REAR. 80/85 LB. HIGH PRESSURE. .025" DIA. AIR VENTS. H.P. VALVE. DRILLED .093" DIA. 130 R.P.M. 2" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = .23°" Graph 12: S.S. REAR 80/85 LB HIGH PRESSURE. .025" DIA. AIR VENTS. H.P. VALVE. DRILLED .093" DIA. 450 R.P.M. 1" STROKE. 25°C. REFILL BALL VALVE LIFTS .025" AREA = .73°" Axis Label: 154 LB/D" | ||