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).
Specification sheet for induction system needles, detailing dimensions for current and experimental types.
| Identifier | ExFiles\Box 83\4\ scan0005 | |
| Date | 18th October 1935 | |
| -2- Hs{Lord Ernest Hives - Chair}/CTS.{C. Trot Salt - Carburation}12/KW.18.10.35. B-56-BN.{W.O. Bentley / Mr Barrington} Induction System. Needles at present fitted :- Type 1 2 3 4 5 6 7 8 9 10 11 12 13 14 C.I. 99 95 91.6 88.9 86.1 84 81.8 79.6 77.8 76 74 73 72 71 Experimental needles to be tried :- Type 1 2 3 4 5 6 7 8 9 10 11 12 13 14 LB1 100 96 92.5 89.5 87 85 83 82 81 80 79 78 77 76 LB2 100 95 91 88.5 86 84 82.5 81.5 80.5 79.5 78.5 77.5 76.5 75.5 LB3 99 95 91.5 89 86.5 84.5 83 82 81 80 79 78 77 76 Dimensions in thousandths of an inch, measured at intervals of .125" from the shoulder. Hs{Lord Ernest Hives - Chair}/C.T. Salt. | ||