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 the limitations of their Highfield dynamometer for high-speed tyre testing.
| Identifier | ExFiles\Box 157\2\ scan0316 | |
| Date | 17th October 1938 | |
| 1332 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, PHONE, BIRMINGHAM" TELEPHONE: ERDINGTON 2121 (P.B.X) EXTENSION No 395. YOUR REF: Am/Gry.{Shadwell Grylls}8/MH.{M. Huckerby} OUR REF: HEP/WS.1006.D. FORT DUNLOP ERDINGTON BIRMINGHAM 24 Messrs. Rolls-Royce Ltd., DERBY. For the attention of G.H. Grylls, Esq. 17th October, 1938. Dear Sirs, Reverting to your letter of the 6th October, we have discussed this point very thoroughly with our Test Division and it is confirmed that the Highfield dynamometer is strictly limited to measurements up to 70 m.p.h. The use of our high speed tyre testing machine has been considered but several factors render it, in our opinion, unsuitable for power consumption measurements of a reliable character. We are not, however, ceasing our investigations as we should like to help you in the determination of this interesting feature, and if we have any later news we will write you again. Yours faithfully, For DUNLOP RUBBER CO., LTD. H B Price Manager, Car Manfrs. Division. | ||