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 sketches analyzing issues with a flywheel and pinion engagement mechanism.
| Identifier | ExFiles\Box 77\5\ scan0060 | |
| Date | 28th September 1927 guessed | |
| FLYWHEEL SKETCH Nᵒ1 Nᵒ1a Nᵒ1b 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. | ||