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).
The required rubber thickness for various Goshawk wiring cables.
| Identifier | ExFiles\Box 45\3\ Scan169 | |
| Date | 14th February 1922 | |
| X.4075 To By/HEB{H. Biraben}, from EFC. EFC1/T14.2.22. X.4075 - GOSHAWK WIRING. In reply to your pencil note re thickness of rubber required for the various sizes of cables:- On the 23/36's, 40/36's and 70/36's we are sure it would be unwise to reduce the amount of rubber seriously. We therefore give as an absolute minimum, the total radial thickness of rubber (including pure rubber, white vulcanised rubber and black vulcanised rubber) .035", as against .041" at present. In the case of the 84/25's, we do not think any alteration should be entertained. C. EFC. | ||