Specification of cables for the Goshawk wiring system.
| Identifier | ExFiles\Box 45\3\ Scan162 | |
| Date | 13th January 1922 | |
| X4075 January 13th 1922. X.4075 - SPECIFICATION OF CABLES FOR R.R. GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) WIRING SYSTEM. Specification 1 Cable. 40/36's tinned copper, high conductivity. Insulated. 1st. Thin layer pure rubber. 2nd. Layer white vulcanised rubber. 3rd. " black " 4th. " of impregnated thin cotton braiding of desired colour, namely, red. Total overall dia. not to exceed .187". Specification 2 Cable. 70/36's tinner copper, high conductivity. Insulated. 1st. Thin layer pure rubber. 2nd. Layer white vulcanised rubber. 3rd. " black " 4th. " of impregnated thin cotton braiding of desired colour, namely, blue. Total overall dia. not to exceed .187". Specification 3 Cable. 12 - 7/25's tinned copper H.C. Insulated. 1st. Thin layer pure rubber. 2nd. Layer white vulcanised rubber. 3rd. " black " 4th. " thin tape. 5th. " of impregnated braiding, black in colour, overall diameter not to exceed .435". | ||
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).