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).
Weight comparison between a standard axle and a new design axle, noting a saving of 32 lbs.
| Identifier | ExFiles\Box 49\1\ Scan031 | |
| Date | 2nd June 1916 guessed | |
| -2- We have weighed this axle against the present standard, using the same wheels and tyres, but without any oil. The standard axle weighs 565 lbs and the new design 533 lbs, the saving being 32 lbs or 5.65% | ||