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 indicator diagrams for Phantom II rear dampers under various test conditions.
| Identifier | ExFiles\Box 105\3\ scan0152 | |
| Date | 3rd December 1930 guessed | |
| SHEET 5. P.II REAR DAMPERS. 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 sq." Axis label: 154 LB/sq." 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 sq." Axis label: 154 LB/sq." 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 sq." Axis label: 154 LB/sq." 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 sq." Axis label: 154 LB/sq." 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 sq." Axis label: 154 LB/sq." 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 sq." Axis label: 154 LB/sq." 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 sq." Axis label: 154 LB/sq." 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 = 1.50 sq." Axis label: 154 LB/sq." 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 sq." Axis label: 154 LB/sq." 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 sq." Axis label: 154 LB/sq." 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 sq." Axis label: 154 LB/sq." 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 sq." Axis label: 154 LB/sq." | ||