Blueprint showing various performance diagrams for a Delco Damper system.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan202 | |
| Date | 9th January 1931 | |
| SHEET IV DIAGRAMS DELCO DAMPER. MAIN LEVER 7.5". INTERMEDIATE LEVER 1:350" Top-Left Diagram: "DELCO" LOW PRESSURE. 7.1.31 AS DELIVERED STANDARD LOVEJOY OIL 450 R.P.M. 1" STROKE. AXLE VEL. 1.25 FT/SEC MEAN BALL PIN LOAD 52 LBS. MAX. BALL PIN LOAD 70 LBS. Vertical axis: 154 LBS/D" Horizontal value: 1.530" Top-Right Diagram: "DELCO" HIGH PRESSURE 2G-G4 8.1.31 STANDARD 450 R.P.M. 1" STROKE. AXLE VEL. 1.25 FT/SEC MEAN BALL PIN 195 MAX. BALL PIN 344 LBS. Vertical axis: 308 LBS/D", 616 LBS/D" Horizontal value: 2.81 D" Second Row-Left Diagram: "DELCO" LOW PRESSURE G4-2G. 9.1.31 STANDARD 30 R.P.M. 2 1/2" STROKE. AXLE VEL .9 FT/SEC MEAN BALL PIN LOAD 36 LBS. MAX BALL PIN LOAD 42 LBS. Vertical axis: 308 LBS/D", 180" I.S Horizontal value: 1.060" Second Row-Right Diagram: 9.1.31 "DELCO" HIGH PRESSURE 2G-G4. STANDARD 130 R.P.M 2 1/2" STROKE. AXLE VELOCITY .9 FT/SEC MEAN BALL PIN LOAD 275 LBS. MAX BALL PIN LOAD 370 LBS. Vertical axis: 308 LBS/D", 616 LBS/D" Horizontal value: 8.01 D" Third Row-Left Diagram: "DELCO" LOW PRESSURE G4-2G 9.1.31 STANDARD 70 R.P.M. 4" STROKE. AXLE VEL .75 FT/SEC MEAN BALL PIN LOAD 32 LBS/D" MAX. BALL PIN LOAD 35 LBS/D" Vertical axis: 308 LBS/D", 120" I.S Horizontal value: 1.020" Third Row-Right Diagram: "DELCO" HIGH PRESSURE 2G-G4 9.1.31 STANDARD 70 R.P.M. 4" STROKE AXLE VELOCITY .75 FT/S MEAN BALL PIN LOAD 246 LBS. MAX BALL PIN LOAD 350 LBS. Vertical axis: 308 LBS/D" Bottom-Left Diagram: "DELCO" LOW PRESSURE G4-2G 9.1.31 H.P. VALVE LEAK BLOCKED UP 70 R.P.M. 4" STROKE. AXLE VEL. .75 FT/SEC MEAN BALL PIN LOAD 32 LBS. MAX. BALL PIN LOAD 35 LBS. Vertical axis: 308 LBS/D", 120" I.S Horizontal value: 1.020" Bottom-Right Diagram: "DELCO" HIGH PRESSURE 2G-G4 9.1.31 H.P. VALVE LEAK BLOCKED UP 70 R.P.M. 4" STROKE. AXLE VELOCITY .75 FT/SEC MEAN BALL PIN LOAD 268 LBS. MAX. BALL PIN LOAD 336 LBS. Vertical axis: 308 LBS/D" | ||
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).