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).
From Mr. Royce detailing new dimensions for insulation on 'Goshawk II' electrical fittings.
| Identifier | WestWitteringFiles\G\October1921\ Scan78 | |
| Date | 21th October 1921 | |
| To EV.{Ivan Evernden - coachwork} from E.{Mr Elliott - Chief Engineer} Copy to C.L. Ld'L. E P C. X. 4081 X. 4410 , ORIGINAL 4 E6/G20/10/21. RE "GOSHAWK II" ELECTRICAL FITTINGS. Regarding the question of insulation on "Goshawk II" electrical fittings, Mr. Royce has recently considered the dimensions which he thinks allowable, and has now decided that the face insulation may be bakelite micarta sheet .062" thick, and the bushings bakelite micarta tubes .031" thick, as in sketch. The adoption of these new dimensions should be per-missible in the reduced scale switchbox that you are drawing, and may be of help in producing this design. Referring to the cut-out and distribution board, these are to be combined on the one mounting, as mentioned in a previous memo, and the design is approaching completion. E.{Mr Elliott - Chief Engineer} [illegible signature] RECEIVED OCT 21 F O | ||