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).
Explaining why the oil level cock was abandoned on the 40/50 gearbox.
| Identifier | ExFiles\Box 66\4\ scan0208 | |
| Date | 18th July 1925 | |
| X8310 AJS. c. Hs{Lord Ernest Hives - Chair} BY/C6/H.{Arthur M. Hanbury - Head Complaints} 18.7.25. E.A.C.7.GEAR BOX. In reply to AJS2/M.{Mr Moon / Mr Moore} 14.7.25. the oil level cock which was at one time fitted on the 40/50 gear box was abandoned when the self starter gear was fitted, as the latter made the oil cock inaccessible. This was the only reason why the oil cock in question was discarded. BY/C. | ||