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 Dunlop Rubber Co. Ltd. regarding the testing of their straight-sided tyres and comparing their stiffness to American-made tyres.
| Identifier | ExFiles\Box 45\1\ Scan009 | |
| Date | 5th May 1920 | |
| X 4050 COPY. C. Wd.{Mr Wood/Mr Whitehead} c. to Hs.{Lord Ernest Hives - Chair} C & EFC RECEIVED STAMP: EFC 1920 MAY XI RECEIVED 1320 - 6 lines. EY4/P3.5.20. For the personal attention of Col. Matthew. May 5th. 1920 - Monday. Messrs. The Dunlop Rubber Co.Ltd., (Wheel Dept.) Alma Street, COVENTRY+ Dear Sir., X 4050. RE QUESTION OF TESTING DUNLOP STRAIGHT SIDED TYRES BY THE EXPERIMENTAL DEPARTMENT IN OUR WORKS. Further to our letter of the 29th. ultimo., ref. Wd{Mr Wood/Mr Whitehead}/7/NJ29.4.20. and your reply to same of the 30th. ultimo, ref. JSW/GLW.{Mr Wilde}95L. we note that your Col. Matthew is at the moment in Amsterdam, but that he will be returning this week and are anxious that this matter should be brought before his notice without delay. Our Experimentl Department are very anxious indeed to be able to carry out some preliminary testing on straight sided Dunlop tyres. The matter in question was fully discussed between Col. Matthew and our Mr. Whitehead, being raised again in our letter quoted above, but since writing same our Expl: Dept: have brought before our notice the importance of pressing for a set of wheels and tyres to carry out the testing, as they feel that it is of the utmost urgency that they should be able to report to our Chief Engineer at as early a date as possible as to the progress we are making in the above Department One point raised by the Experimental Department, based upon the tyres as they are using at the moment is, that the walls of the straight sided tyres produced by your Company are much stiffer than the walls of American made straight sided tyres, and their remark in regard to this matter is, that it makes the process of changing tyres on a demountable rim more difficult as the tyres has to be compressed the whole way round in the process of slipping the ring on, so that the stiffness of the tyre wall becomes quite an important factor in regard to the ease of demounting and replacing the loose rim. Contd. | ||