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).
Blueprint displaying six graphs of high and low pressure test results for a Delco II rear damper with a 12' lever and adjustable leak.
| Identifier | ExFiles\Box 28\1\ Scan195 | |
| Date | 30th January 1931 guessed | |
| SHT 2 DELCO REAR DAMPER - ADJUSTABLE LEAK. 12" LEVER. Graph 1 (Top Left): DELCO II. HIGH PRESSURE 4" STROKE. N°1 LEAK. MAX PRESSURES 1085 LBS/D" 925 " 323 " 70 R.P.M 50 R.P.M 25 R.P.M Y-Axis: 462 LB/D" Graph 2 (Top Right): DELCO II. LOW PRESSURE 4" STROKE. N°1 LEAK. MAX PRESSURES 231 LBS/D" 146 " 85 " 350 R.P.M 250 R.P.M 150 R.P.M Y-Axis: 154 LB/D" Graph 3 (Middle Left): DELCO II. HIGH PRESSURE. 4" STROKE. N°3 LEAK. MAX PRESSURES. 1085 LBS/D" 763 " 647 " 531 " 120 R.P.M 100 R.P.M 70 R.P.M Y-Axis: 462 LB/D" Graph 4 (Middle Right): DELCO II. LOW PRESSURE 4" STROKE. N°3 LEAK. MAX PRESSURES 216 LBS/D" 131 " 77 " 350 R.P.M 250 R.P.M 150 R.P.M Y-Axis: 154 LB/D" Graph 5 (Bottom Left): DELCO II. HIGH PRESSURE. 4" STROKE. N°4 LEAK. MAX PRESSURES 1065 LBS/D" 832 " 624 " 503 " 150 R.P.M 120 R.P.M 100 R.P.M Y-Axis: 462 LB/D" Graph 6 (Bottom Right): DELCO II. LOW PRESSURE. 4" STROKE. N°4 LEAK. MAX PRESSURE 216 LBS/D" 139 " 77 " 350 R.P.M 250 R.P.M 150 R.P.M Y-Axis: 154 LB/D" | ||