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).
Calculating the weight difference between two tyre types for a back axle unit.
| Identifier | ExFiles\Box 3\2\ 02-page035 | |
| Date | 18th January 1923 | |
| weighing unit back axle 2600 tyre 500 lbs 5700 tyre 558 lbs ∴ difference 58 lbs Top right calculations: 74 1/2 24 98 1/2 | ||