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).
Typed memorandum detailing the design considerations and applications of a specific gearbox, comparing it to older versions.
| Identifier | ExFiles\Box 75\1\ scan0017 | |
| Date | 13th November 1915 guessed | |
| (4) to the necessity of sticking to the old centres of change gear quadrant and position of box. This box is at present used on the standard 45 and 65 h.p. but is not used on the 30 h.p. The general scheme of this box is also used on the Grand Prix racers, with the shafts placed one over the other and with modified striking mechanism. The length of this box was as a matter of fact, very much less than the old box in which the shaft was always running, but in order to obtain this shortness, I sacrificed the idea of arranging the gear wheels between the bearings and overhung the fixed reduction gear wheel on the countershaft beyond this bearing. | ||