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).
Blueprint diagram of a torque reaction damper for a 20/25 HP model.
| Identifier | ExFiles\Box 137\4\ scan0119 | |
| Date | 21th November 1930 | |
| TORQUE REACTION DAMPER 20/25HP B DISTANCE PIECE (A) 8lbs LOAD ROLLS-ROYCE, LIMITED PRINT ROOM, 21 NOV 1930 | ||