Series of performance graphs for S.S. Rear Dampers under different test conditions.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan095 | |
| Date | 15th January 1931 guessed | |
| SHEET 5. P.II REAR DAMPERS Graph 1 (Top Left): 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 (Top Middle): 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 (Top Right): 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 (Second Row, Left): 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 (Second Row, Middle): 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 (Second Row, Right): 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 (Third Row, Left): 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 (Third Row, Middle): 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□" Graph 9 (Third Row, Right): 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 (Bottom Row, Left): S.S. REAR 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 (Bottom Row, Middle): 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 (Bottom Row, Right): 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 (repeated for each graph): 154 LB/□" | ||
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).