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).
List of notes and decisions on various engine components and designs.
| Identifier | ExFiles\Box 109\3\ scan0082 | |
| Date | 20th March 1941 | |
| -cont'd- - 4 - Jnr.{Charles L. Jenner}1/SW.20.3.41. No.22. RE.1935 - Rocker Cover Studs. The collars on these studs ensure that the studs are truly vertical and they must be, because the studs locate the rocker cover. There is nothing else to do it. Vauxhall's can afford studs of this shape. I think any stud without a collar when it is driven home, it pulls up on the angle of the last thread and becomes cocked over. No.23. RE.1685. The object of the little pip, is to facilitate pushing the spring and plunger into position. Without the pip, this would be difficult. No.24. RE.1820. We cannot delete the location on one of the studs, because it positions the bearing cap end-wise. The oil drain-away groove, must be machined because of the close clearance of the flinger on the crankshaft. No.25. Front Engine Mounting. The criticisms do not seem very reasonable, however we will give the alternatives a consideration. The amount of room available is small and clearances have been brought down to a minimum to shorten the engine house. No.26. RE.1743. We agree to no collar. No.27. RE.1744. Suggest we make from Hex. bar, with the collar sweated on so that it is not lost by the Serviceman. No.28. RE.1923. I also wish I could have avoided the sloping tappet holes, to do so would have put more inertia on the rocker mechanism, and materially increased the width of the engine locally to the distributor and oil pump. No.29. RD.1908. We will keep this in mind. Have no bright alternatives yet in mind. (continued) | ||