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 from Dunlop Rubber Co Ltd. discussing tyre inflation pressures and durability.
| Identifier | ExFiles\Box 39\2\ Scan087 | |
| Date | 3rd October 1921 | |
| A121 D.{John DeLooze - Company Secretary} R.{Sir Henry Royce} Co. LTD. CONTINUATION SHEET No. 1. 3rd Oct. 1921 Messrs Rolls Royce, Ltd., On the question of inflation pressures, it is in regard to the durability of the casing more than the durability of the tread that the higher pressures are necessary to ensure the longest life. The lower the pressure the more acute is the bending, and the greater the flexing of the tyre wall, with corresponding reduction in its life. We have been carrying out a large number of tests on this point during the last few months, and I should much like to have an opportunity of discussing these with you. I would like to run over and see you on a day convenient to you unless you would prefer to come over to Birmingham. If it is possible for you to come here, I shall be very pleased to show you something of our testing arrangements. In any case, would you kindly let me have a word from you in order to arrange a meeting to discuss the points in question. Yours faithfully, For the DUNLOP RUBBER CO LTD., W.H. Paull Development Supt., | ||