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).
Calculation of the weight difference between a standard configuration and one with specific wheels and tyres.
| Identifier | ExFiles\Box 3\3\ 03-page028 | |
| Date | 31th October 1911 | |
| shaved extra conved 3700 Weights - by Mr Raufreter in Tyres 31. 0. 7 1750 weight 26. 2. 0 Standard weight - - - - - - 4. 2. 7 difference Take the extra weight of S & C wheels from 4. 2. 7. which is 1 cwt. Therefore extra weight due to Tyres & Pneumatic = 3 1/2 cwt T/file col. nos. on weights 31/10/11 E.P. 30/10/11 from C.R.S. asks Wgt. | ||