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).
Set of graphs and data tables showing the variation in Delco loading with axle velocity for rear axle dampers.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan200 | |
| Date | 3rd February 1931 guessed | |
| SHEET 2. REAR AXLE DAMPERS. VARIATION IN DELCO LOADING WITH AXLE VELOCITY. VALVES 3G. G.2. STROKES "Z-4" 12" LEVER 16964 Graph 1 (High Press): 450 R.P.M. 300 R.P.M. 200 R.P.M. 100 R.P.M. 308 LBS/□" Table 1: FT/SEC. AXLE VEL. | MAX. BALL PIN LOAD | MEAN BALL PIN LOAD 2 | 194 | 138 1.33 | 141 | 105 .9 | 92.5 | 67 .45 | 40 | 28.2 Graph 2 (Low Press): 154 LBS/□" 450 R.P.M. 300 R.P.M. 200 R.P.M. 100 R.P.M. Table 2: FT/SEC AXLE VEL. | MEAN BALL PIN LOAD. | MAX BALL PIN LOAD 2 | 27 | 35 1.33 | 19 | 26.3 .9 | 15 | 19.6 .45 | 13 | 15.4 Graph 3 (High Press): 140 R.P.M. 100 R.P.M. 70 R.P.M. 462 LBS/□" Table 3: AXLE VEL. | MEAN BALL LOAD | MAX. BALL LOAD 2.4 | 226 | 300 1.7 | 183 | 256 1.2 | 103 | 145 Graph 4 (Low Press): 154 LBS/□" 140 R.P.M. 100 R.P.M. 70 R.P.M. Table 4: AXLE VEL. | MEAN BALL LOAD | MAX. BALL LOAD 2.4 | 27 | 33 1.7 | 20 | 22 1.2 | 16.8 | 17.6 | ||