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 of a Torque Reaction Damper for a 20/25HP model.
| Identifier | ExFiles\Box 104\1\ scan0097 | |
| Date | 18th December 1930 guessed | |
| TORQUE REACTION DAMPER 20/25HP B DISTANCE PIECE (A) 8lbs LOAD | ||