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. regarding proposed tyre and rim width experiments.
| Identifier | ExFiles\Box 157\2\ scan0026 | |
| Date | 14th August 1936 | |
| X1332 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: 'DUNLOPS,PHONE,BIRMINGHAM'. TELEPHONE: BIRMINGHAM CENTRAL 4108 (P.B.E.) EXTENSION No. 349. YOUR REF: HS{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}9/MJ. OUR REF: H/FJ/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} FORT DUNLOP ERDINGTON BIRMINGHAM August 14th, 1936. Messrs Rolls Royce Ltd., Experimental Dept. DERBY. For the attention of Mr G.H. Grylls. Dear Sir, Mr Healey has asked us to reply to your letter of the 12th instant. We shall be very pleased to help you further and carry the experiments on rim width a step further. We propose making tests on 6.00-16 Fort 6 ply tyres on 5.50, 5.00, 4.50, 4.00 and possibly 3.50 rims. We have chosen this size on which to make the tests because we have a larger range of rims in the 16" diameter than the 18". We think, however, that tests in the 6.00-16 size will be applicable to the 6.00-18 and 7.00-18 six-ply tyres which you use, and will enable us to decide whether there is an optimum rim width or not. We have not made any tests on the 5.00-18 Phantom III rims, but will try to do so on the completion of the tests we are now starting. We will let you have the results of these tests as soon as possible, but it will be some little time as we have to have special wheels made. Yours faithfully, For The DUNLOP RUBBER CO. LTD. C.A.Hardeman. Product Design Division. | ||