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).
Schematic diagrams of a gearbox or transmission system.
| Identifier | ExFiles\Box 179\3\ img048 | |
| Date | 9th March 1932 guessed | |
| FIG II ENGINE IST 2ND 3RD C.M. PROP SHAFT No. 553 NO GEARS TURNING WITH ENGINE BRAKE Fig I ENGINE PROP SHAFT Diagram Labels: 41 19 A X 27 33 B Y 35 25 C Gear Selection Table: TOP AC 1:1 3RD AC 1.3:1 2ND AB 2.0:1 1ST AC 3.0:1 Selector Positions: Gear X Y TOP RIGHT LEFT 3RD LEFT RIGHT 2ND LEFT LEFT 1ST LEFT RIGHT ALL SILENT GEARS WITH 3 CONSTANT MESH PAIRS | ||