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).
The weights of three different axle configurations.
| Identifier | ExFiles\Box 3\3\ 03-page048 | |
| Date | 28th August 1912 | |
| X200 Axle Weights 1700 type Axle + Torque tube and axles with oil wheels tyres etc. 4 3 7 Steno'c double bevel axle with. 4.2.9 Steno'c worm axle with. 4-2-14 28/8/12 Reported verbally to Mr Royce at Le CanadelHenry Royce's French residence. | ||