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).
Series of performance diagrams for a Delco damper under various test conditions.
| Identifier | ExFiles\Box 56\1\ Scan036 | |
| Date | 9th January 1931 | |
| SHEET IV DIAGRAMS DELCO DAMPER. MAIN LEVER 7.5". INTERMEDIATE LEVER 1.350". --- Top Left Diagram: "DELCO" LOW PRESSURE. AS DELIVERED STANDARD LOVEJOY OIL 450 R.P.M. 1" STROKE AXLE VEL 1.25 FT/SEC MEAN BALL PIN LOAD 52LBS MAX BALL PIN LOAD 70LBS. Top Right Diagram: "DELCO" HIGH PRESSURE 2G-G4 STANDARD 450 R.P.M. 1" STROKE AXLE VEL 1.25FT/SEC MEAN BALL PIN 195 MAX. BALL PIN 344LBS --- Second Row Left Diagram: "DELCO" LOW PRESSURE G4-2G. STANDARD 30 R.P.M. 2 1/2" STROKE AXLE VEL .9FT/SEC MEAN BALL PIN LOAD 36 LBS MAX BALL PIN LOAD 42 LBS. Second Row Right Diagram: "DELCO" HIGH PRESSURE 2G-G4 STANDARD 130 R.P.M. 2 1/2" STROKE AXLE VELOCITY .9FT/SEC MEAN BALL PIN LOAD 275 LBS. MAX. BALL PIN LOAD 370 LBS. --- Third Row Left Diagram: "DELCO" LOW PRESSURE G4-2G STANDARD 70 R.P.M. 4" STROKE AXLE VEL .75 FT/SEC MEAN BALL PIN LOAD 32 LBS/SQ" MAX. BALL PIN LOAD 35 LBS/SQ" Third Row Right Diagram: "DELCO" HIGH PRESSURE 2G-G4 STANDARD 70 R.P.M. 4" STROKE AXLE VELOCITY .75 FT/S MEAN BALL PIN LOAD 246 LBS. MAX BALL PIN LOAD 350LBS --- Bottom Left Diagram: "DELCO" LOW PRESSURE G4-2G 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. Bottom Right Diagram: "DELCO" HIGH PRESSURE 2G-G4 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. | ||