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).
Diagram of a Torsional Vibration Indicator.
| Identifier | WestWitteringFiles\P\2July1926-September1926\ Scan146 | |
| Date | 27th September 1926 guessed | |
| RECORDING PLATE WHICH SLIDES ON EXTENSION OF CRANK NUT. EXTN OF CRANK NUT WASHER SEPARATING FLYWHEELS WHITE METAL LINED PLATE ATTACHED RIGIDLY TO HUB SPG. CARRIER ATTACHED TO FLYWHEELS SHEWN IN THIS POSN FOR CLEARNESS. FLYWHEELS FREE TO MOVE (NO FAN.) LEVER ARMS SPRING BALANCE ARMS SPRING LOADED SCRIBER PATH OF SCRIBER THIS PIVOT CARRIED BY FLYWHEEL CARRIED BY PLATE SLOT TO ALLOW 5° MOVEMENT LIGHT SPRINGS. ATTACHED TO FLYWHEELS ATTACHED TO PLATE PLATE. TORSIONAL VIBRATION INDICATOR. aek. | ||