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).
Comparison of component weights for Phantom III, 20/25, Bentley, and Buick chassis.
| Identifier | ExFiles\Box 124\3\ scan0389 | |
| Date | 11th February 1936 | |
| X1049 Hs{Lord Ernest Hives - Chair}/Std.19/KW.11.2.36. Comparison of Component Weights of Ph.III, 20/25, Bentley and Buick Chassis. | Section of Car | Ph.III | 20/25 | Bentley | Buick | |---|---|---|---|---| | Frame. Includes step irons and body brackets, and in case of Ph.III & Buick, includes front pan. | 560.0 | 312.0 | 194.0 | 272.0 | | Road Springs. In case of Ph.III & Buick, rear only. Bentley & 20/25 - set of 4. | 197.3 | L.R.148.0 H.R.168.0 | 117.5 | 84.0 | | Front Axle. Includes hubs, brake drums & brakes gear attached to axle, cross stg. tube - in case of Ph.III & Buick wishbones & coil springs etc. | 353.5 | 155.0 | 119.0 | 160.0 | | Rear Axle. Includes hubs, brake drums & brake gear attached to axle, spring clips etc., and in case of Buick, prop. shaft. | 327.0 | 295.0 | 197.0 | 219.0 | | Wheels. Set of 5, including tyres etc. | 366.5 | 320.0 | 257.0 | 278.7 | | Shock Dampers. Includes connections to axles, piping and governor unit. (rear dampers only in case of Ph.III). | 38.8 | 77.5 | 56.0 | 45.0 | | ||