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. requesting a pair of track tyres for dynamometer power curve testing.
| Identifier | ExFiles\Box 157\3\ scan0025 | |
| Date | 21th February 1939 | |
| Experimental Dept. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}1/MH.{M. Huckerby} 21st. February, 1939. H.E.Price, Esq., Messrs. Dunlop Rubber Co. Ltd., Fort Dunlop, Erdington, BIRMINGHAM. Dear Mr. Price, Thank you for sending the 6½ x 19 track tyre. Could you now send us its pair. we have the car in question at Derby and want to take a dyno. power curve with racing tyres of this size. As regards the 6½ x 16 tyres, we have not used these yet as we are first completing some apparatus to measure accurately the rear axle torque, so that variations in engine power due to air temperature changes will not cause errors. With regard to further supplies of track tyres, we will ring you shortly and ask you to come over and discuss them. Yours sincerely, | ||