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).
Use of twin tyres at the back to increase capacity, due to the difficulty of procuring larger section tyres.
| Identifier | ExFiles\Box 81\1\ scan0134 | |
| Date | 21th April 1914 | |
| R.R 235A. (150 H) (V.V. 782 27.3.14) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 0442. COPY. To By.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce} Copy to J.{Mr Johnson W.M.} Copy to Wor.{Arthur Wormald - General Works Manager} Copy to Na.{Mr Nadin} R5/P 21. 4. 14. Re LARGER TYRES. We believe that the only thing possible to do with reference to an increase in the capacity of the tyres is to use twin tyres at the back. I have discussed the matter with Mr Johnson, and I object definitely to a larger diameter of wheel, and a larger section of tyre seems difficult to procure everywhere, so that there is nothing left for it but the twin tyres, which should be put through a thorough test as early as convenient. I think, however, they should be avoided on trials cars, and cars with ordinary light bodies, and only used when we are obliged to provide larger tyres. R.{Sir Henry Royce} [Handwritten on left margin]: x917 [Watermark/Stamp]: ROLLS-ROYCE LTD 1804 [Watermark/Stamp]: MADE AT CROXLEY | ||