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).
Performance graphs for a Delco II adjustable leak rear damper with a 12' lever.
| Identifier | ExFiles\Box 16\5\ Scan018 | |
| Date | 2nd September 1931 guessed | |
| DELCO REAR DAMPER - ADJUSTABLE LEAK. 12" LEVER. Top Left Graph: DELCO II. HIGH PRESSURE 4" STROKE. N°1 LEAK. RPMs: 70, 50, 25 Y-Axis: 462 LB/SQ" MAX PRESSURES: 1085 LBS/SQ", 925, 323 Top Right Graph: "DELCO II" LOW PRESSURE 4" STROKE. N°1 LEAK. RPMs: 350, 250, 150 Y-Axis: 154 LB/SQ" MAX PRESSURES: 231 LBS/SQ", 146, 85 Middle Left Graph: DELCO II. HIGH PRESSURE. 4" STROKE. N°3 LEAK. RPMs: 150, 120, 100, 70 Y-Axis: 462 LB/SQ" MAX PRESSURES: 1085 LBS/SQ", 763, 647, 531 Middle Right Graph: DELCO II. LOW PRESSURE. 4" STROKE. N°3 LEAK. RPMs: 350, 250, 150 Y-Axis: 154 LB/SQ" MAX PRESSURES: 216 LBS/SQ", 131, 77 Bottom Left Graph: DELCO II. HIGH PRESSURE. 4" STROKE. N°4 LEAK. RPMs: 150, 120, 100, 70 Y-Axis: 462 LB/SQ" MAX PRESSURES: 1065 LBS/SQ", 832, 624, 503 Bottom Right Graph: DELCO II. LOW PRESSURE. 4" STROKE. N°4 LEAK. RPMs: 350, 250, 150 Y-Axis: 154 LB/SQ" MAX PRESSURES: 216 LBS/SQ", 139, 77 | ||