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).
Hand-drawn diagram showing the approximate case depth on the teeth of a 2nd motion shaft.
| Identifier | ExFiles\Box 98\4\ scan0111 | |
| Date | 7th July 1939 guessed | |
| FROM HPS{Horace Percy Smith - Experimental Factory Mgr}/RH{R. Hollingworth} c To RM{William Robotham - Chief Engineer}/GRY{Shadwell Grylls} SMALL END .020/.024" BIG END .020" SMALL END .030" BIG END .032/.036 SMALL END .025/.028 BIG END .028" APPROX CASE DEPTH ON TEETH OF 2nd MOTION SHAFT CALCULATED FROM ANGLE OF TEETH. | ||