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).
Letter to the Dunlop Rubber Co. Ltd. requesting tyre performance data and availability of large section inner tubes.
| Identifier | ExFiles\Box 53\2\ Scan245 | |
| Date | 21th September 1926 | |
| X4565 Expl: Dept: Hs{Lord Ernest Hives - Chair}/Rnl/LG. 21st. Sept. 1926. The Dunlop Rubber Co. Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Paull. Development Superintendent. X4050 X4565 In June of last year you were good enough to furnish us with particulars of the change in effective tyre diameter at speed of our standard 33 X 5" straight sided tyres. We are anxious to obtain similar figures for the 6.75" tyre run at an inflation pressure of 30 lbs/sqin., carrying 1320 lbs. load. We should be much indebted to you if you could let us have this information. With reference to the large section inner tubes which you suggested you might be able to let us have to test in connection with high speed wobbles, we should very much like to know when these are likely to be available. Yours faithfully, | ||