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).
Blueprint illustrating four sketches of a flywheel engagement mechanism, detailing potential spring and engagement failures.
| Identifier | ExFiles\Box 40\5\ Scan183 | |
| Date | 23th September 1927 guessed | |
| SKETCH Nº1 Nº1a Nº1b FLYWHEEL SKETCH Nº2 SPRING WHEN COMPRESSED .250 AS SHOWN, IS NOT SUFFICIENTLY STRONG TO FORCE PINION TEETH INTO ENGAGEMENT WITH FLYWHEEL. SKETCH Nº3 MAIN SPRING WHEN COMPRESSED .100 AS SHOWN IS WEAK. THIS, IN CONJUNCTION WITH POOR CORK PRODUCES SLIP AT FACE 'C'. SKETCH Nº4 CASING FULLY DRAWN IN. SPRING 'A' BEING WEAK, IS OVERCOME BY SPRING 'B' THEREBY HELPING TO FORCE PINION OUT OF ENGAGEMENT WITH FLYWHEEL HAVING WORN TEETH. | ||