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).
Experiments with a new silent tyre tread to address issues with groans.
| Identifier | ExFiles\Box 45\2\ Scan371 | |
| Date | 27th November 1931 | |
| Y4050. To C. From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}2/MJ.27.11.31. With reference to C.1/C21.11.31. We are experimenting with a different type of silent tread. We attach a photograph of this tread marked with a cross compared with the present silent tread type of tyre. We agree that the existing silent tyres are not ideal from the point of view of groans. We expect to have the new type of tread running on 20-G4. in France in about three weeks' time and will keep you posted on further developments. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||