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).
Construction of gearboxes with torsionally free pinions and a modification to first gear.
| Identifier | ExFiles\Box 5\3\ 03-page121 | |
| Date | 4th May 1925 guessed | |
| contd :- -2- It has torsionally free pinions with the original ratio of gears. There are a large number of these boxes being built up in the Works. We are trying the deeper plunger on the 1st. speed in order to hold this gear in. He. | ||