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).
Tyre noise experiments for the Phantom III and 20/25 models, and collaboration with the Dunlop Co.
| Identifier | ExFiles\Box 157\1\ scan0241 | |
| Date | 18th November 1935 | |
| X 1332 W/S - Cx.{Major Len W. Cox - Advertising Manager} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}7/KW.18.11.35. Tyre Noise. Cx.{Major Len W. Cox - Advertising Manager}4/KW.13.11:35. We have not finished our experiments on tyre noise. If you consider, however, that the improved tread as fitted to Phantom III is reasonable from a skidding point of view, there is no reason why you should not have similar tyres for the 20/25 to be demonstrated in London. Obviously, however, we could not standardise this tyre until we have run it in France. We are taking the matter up with the Dunlop Co. with a view to getting a set to be run on 21-G-IV. The same mould will do for your tyres. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||