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).
Bottom tappet misalignment with the camshaft causing cross-bedding and tightness in the guide.
| Identifier | ExFiles\Box 96\2\ scan0133 | |
| Date | 1st September 1936 | |
| (4) Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}14/JH.1.9.36. As pointed out to Mr. Elliot we have found several instances where the bottom tappets do not line up truly with the camshaft causing cross-bedding. This is due to inaccuracies of the tappet guide fitting on its dowel, the latter being machined in the tappet block, and the small working clearance allowed for the tappet to work in its guide After running there is a tendency for the tappet to become tight in its guide at the lower open end. Hs{Lord Ernest Hives - Chair}/L.H.Swindell. | ||