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).
Required modifications to the oil feed system for rocker shafts and an issue with a water drain tap.
| Identifier | ExFiles\Box 155\1\ scan0077 | |
| Date | 27th April 1933 | |
| -2- Hs{Lord Ernest Hives - Chair}/Wymn.9/KT.27.4.33. Nos. 3, 4, 5 & 6, being OK., and so, as the oil feed is situated in the centre of the cylinder head, it appears that we require a greater pressure of oil in the rocker shaft to feed the end rockers, or alternatively, another oil feed at each end of the two rocker shafts, making four feeds in all, each feed to supply three rockers. The water drain tap was also a source of annoyance, as it gradually worked open every few miles. For track tests we wired this in its closed position. Hs{Lord Ernest Hives - Chair}/G.H. Whyman. | ||