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 and data for front axle dampers with 7.5' levers.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan201 | |
| Date | 9th January 1931 guessed | |
| FRONT AXLE DAMPERS. 7.5" LEVERS. SHEET 3 COMPRESSION OR LOW PRESSURE STROKE MEAN AXLE VEL. FT/SEC MEAN BALL PIN LOAD LBS MAX. BALL PIN LOAD LBS .75 27.7 29.5 1.07 32.6 32.6 1.50 40 45.6 2.15 44.5 58.6 3.35 73.0 106 308 LBS/□" BALL END STROKE 4" REBOUND OR HIGH PRESSURE STROKE AXLE VEL. FT/SEC MAX.BALL PIN LOAD LBS. MEAN BALL PIN LOAD. CURVE LETTER 1.25 344 195 A .860 200 120 B .278 60 31.4 C 770 LBS/□" 616 LBS/□" 462 LBS/□" 303 LBS/□" 154 LBS/□" A.{Mr Adams} B. C. BALL END STROKE 1" AXLE VEL. .28 FT/SEC. CURVE MAX. BALL PIN LOAD LBS. MEAN BALL PIN LOAD LBS. D UNDRILLED VALVES. 134 38.0 E DRILLED VALVE. 60 31.4 154 LBS/□" 303 LBS/□" BALL END STROKE 1" | ||