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. regarding tyre drawings, dimensions, and deflection tests.
| Identifier | ExFiles\Box 157\3\ scan0058 | |
| Date | 24th May 1939 | |
| 1332 DUNLOP RUBBER CO., LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, PHONE, BIRMINGHAM" TELEPHONE: ERDINGTON 2121 (P.B.X) EXTENSION No. 395. YOUR REF. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}14/WH. OUR REF. HEP/HM.{Capt. W. Hallam - Head Repairs}422. FORT DUNLOP ERDINGTON BIRMINGHAM 24 Messrs. Rolls-Royce, Ltd., DERBY. 24th May, 1939. Dear Sirs, In thanking you for your letter of the 22nd, we have pleasure in enclosing copies of our drawings showing 7.00-16 Standard and Fort tyres on a 5.00 rim and 7.50-16 Standard and Fort tyres on a 5.50 rim. The dimension which you mention half way between the edge of the tyre and the widest point of the tyre will be variable dependent on pressure and relevant load. The drawings provided should be sufficiently accurate for scaling purposes on a free tyre, but if you wish us to carry out any deflection tests at certain loads and pressures, we should be very pleased to do this and give you a record of the tyre profile under such conditions. Yours faithfully, FOR DUNLOP RUBBER CO., LTD. Manager, Car Manfrs. Division. Encl: DDS.5948. DS.7207. DS.7326. DS.7317. | ||