Performance graphs for a Delco II Rear Damper with adjustable leak and 12-inch lever, showing various high and low pressure tests.
| Identifier | ExFiles\Box 56\1\ Scan178 | |
| Date | 10th June 1931 guessed | |
| DELCO REAR DAMPER - ADJUSTABLE LEAK. 12" LEVER. Top-Left Graph: DELCO II. HIGH PRESSURE 4" STROKE. N°1 LEAK. 70 R.P.M 50 R.P.M 25 R.P.M 462 LB/D" MAX. PRESSURES 1085 LBS/D" 925 " 323 " Top-Right Graph: "DELCO II" LOW PRESSURE 4" STROKE. N°1 LEAK. 350 R.P.M. 250 R.P.M. 150 R.P.M. 154 LB/D" MAX. PRESSURES 231 LBS/D" 146 " 85 " Middle-Left Graph: DELCO II. HIGH PRESSURE 4" STROKE. N°3 LEAK. 150 R.P.M. 120 R.P.M. 100 R.P.M. 70 R.P.M. 462 LB/D" MAX. PRESSURES. 1085 LBS/D" 763 " 647 " 531 " Middle-Right Graph: DELCO II. LOW PRESSURE 4" STROKE. N°3 LEAK. 350 R.P.M 250 R.P.M 150 R.P.M 154 LB/D" MAX. PRESSURES. 216 LBS/D" 131 " 77 " Bottom-Left Graph: DELCO II. HIGH PRESSURE 4" STROKE. N°4 LEAK. 150 R.P.M. 120 R.P.M. 100 R.P.M. 70 R.P.M. 462 LB/D" MAX. PRESSURES 1065 LB/D" 832 " 624 " 503 " Bottom-Right Graph: DELCO II. LOW PRESSURE. 4" STROKE. N°4 LEAK. 350 R.P.M. 250 R.P.M. 150 R.P.M. 154 LB/D" MAX. PRESSURE 216 LB/D 139 " 77 " | ||
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).