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).
Review of design and manufacturing proposals for various engine components.
| Identifier | ExFiles\Box 109\3\ scan0081 | |
| Date | 20th March 1941 | |
| -cont'd- - 3 - Jnr.{Charles L. Jenner}1/SW.20.3.41. No.14. Dipstick. The design of the dipstick is silly. The position of the engine and the high catwalk demands a long piece of wire, say about 18" long, to make it accessible. No.15. Distributor Drive Shaft. If the shop prefer this in one piece, we agree to try the first one made like the drawing. No.16. RE.1796. I cannot see why this is difficult to manufacture. Would it be easier to say make them in pairs and then cut them apart, or say provide extra lugs in order to hold the piece in the machine? No.17. RE.1797. These dowels are to position the face of the bracket accurately and squarely, to alter them to a parallel fit introduces another slack. Parallel dowels might easily fall out. No.18. RE.1804. We agree to the button being driven in without any swaging operation. No.19. RE.1875 - Exhaust Valve Guide. We agree to the .0005 limit on the exhaust valve guide only. No.20. RE.1924 - Rocker Oil Filler. There is no objection to sweating the filler boss to the cover. No.21. RE.1675. We always consider to have two diametrically opposed keyways to be good practice, because the pressure on the broach when cutting is balanced. Since there appears to be difficulty in spacing the keys on the male portion, we can revert to one Woodruff Key, but it must be increased in size. (continued) | ||