Material selection and steel composition for the 'Goshawk II' frames.
| Identifier | Morton\M1.1\ img082 | |
| Date | 12th October 1921 | |
| To HS. {Lord Ernest Hives - Chair} from R. {Sir Henry Royce} Copy to CJ. " " WOR. {Arthur Wormald - General Works Manager} " " WD. {Mr Wood / Mr Whitehead} " " BY. {R.W. Bailey - Chief Engineer} " " DA. {Bernard Day - Chassis Design} X4260 RE "GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II" FRAMES. These frames should be on order, but I am not clear yet that we have settled what material is to be used. I am inclined to leave it to Mr. Hall's investigation. Anyway, one feels certain that a well selected carbon steel with the best proportions of carbon, manganese, and silicon heat treated would give as great satisfaction as the nickel or nickel chromium steel. Personally, I should like to use a steel somewhat lower in carbon, but exactly like the analysis of the spring steel which has been sent from America in the springs we have tested and found to be so extremely good. This is a carbon manganese and silicon steel. R. {Sir Henry Royce} [STAMPED TEXT] ORIGINAL RECEIVED OCT 13 1921 [PRINTED TEXT TOP RIGHT] FORM.23.(22-7-21 2000 H.T.&S) HSS. | ||
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).