Graph comparing the performance of different engine damper configurations based on amplitude and RPM.
| Identifier | ExFiles\Box 124\1\ scan0269 | |
| Date | 28th November 1939 guessed | |
| B.60 N°3 NORMAL DRIVE. B.60 DAMPER, TORQUE 210 LBS/DEGREE. B.60 N°1 CHAIN DRIVE. B.60 DAMPER, TORQUE 210 LBS FT/DEGREE. B.60 N°3 CHAIN DRIVE. HUMBER SNIPE DAMPER. FRICTION TORQUE 50 LBS. INS. B.60 N°1. CHAIN DRIVE. STUDEBAKER DAMPER 45/50 RUBBERS. AMPLITUDE DEGREES ENGINE R.P.M. RM {William Robotham - Chief Engineer} /VRS | ||
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).