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).
List of improvements for clutch, braking, air silencing, and exhaust systems.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page105 | |
| Date | 15th November 1932 guessed | |
| -2- (5) Latest simplified type of clutch. (6) Improved arr-angement of braking to reduce work done by servo and pedal pressure. (7) Air silencer for Carburetter Resonance type. (8) Complete work on getting rid of exhaust booms with new system. He/Rn.{Mr Robinson} | ||