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 S.U. Company Ltd. requesting four experimental needles with specified dimensions for the 20/25 model.
| Identifier | ExFiles\Box 121\4\ scan0038 | |
| Date | 2nd July 1935 | |
| x1487 Exptl. Dept. Hs{Lord Ernest Hives - Chair}/CTS.{C. Trot Salt - Carburation}5/KW. 2nd July, 1935. The S.U. Company Ltd., East Works, Adderley Park, BIRMINGHAM 8. For the attention of Mr. Cooper. Dear Sirs, Will you please make four experimental needles, for our 20/25 as follows. Dimensions in thous' of an inch, at intervals of .125. "XC4" 1 2 3 4 5 6 7 8 9 10 11 12 13 14 99 99 99 93.5 88 84.5 83.5 83 82.5 82 81.5 81 80.5 80 "XC5" 1 2 3 4 5 6 7 8 9 10 11 12 13 14 99 99 99 93.5 88.5 85.0 84 83.5 83 82.5 82 81.5 81 80.5 "XC6" 1 2 3 4 5 6 7 8 9 10 11 12 13 14 99 99 99 83.5 89 86 84.5 84 83.5 83 82.5 82 81.5 81 "XC7" 1 2 3 4 5 6 7 8 9 10 11 12 13 14 99 99 99 93.5 88 85 84 83.5 83 82.5 82 81.5 81.5 81.5 | ||