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 graph and cross-section diagram for a damper lever and piston assembly.
| Identifier | WestWitteringFiles\R\2October1927-November-1927\ 145 | |
| Date | 16th November 1927 guessed | |
| FIG. A BALL PIN LOAD AT 7.5 RADIUS PRESSURE ON PISTON LBS/SQ IN AXLE UP & DOWN MOVEMENT THROUGH 6" OSCILLATIONS/MIN MAX. PISTON VELOCITY INS/SEC FRONT AXLE VELOCITY FT/SEC MAXIMUM MEAN PISTON VEL. FAST TOURING. MAX. WORKING PISTON VEL. PASSAGES AS BELOW STANDARD PASSAGES VALVE SPRING PRESSURE REDUCED 7.5 DAMPER LEVER HIGH PR.{Percy H. Rose} SIDE LOW PR.{Percy H. Rose} SIDE 2 OFF PER PISTON DIA. OF ORIFICE 'A' - .084 1.850 ONE RESTRICTION IN CASE 2.5 ORIFICE DIA. .137 | ||