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).
The investigation of a 25HP S.M. gearbox, giving approval to proceed to production with a qualification on its lubrication system.
| Identifier | ExFiles\Box 178\3\ img012 | |
| Date | 1st January 1932 | |
| FROM DA.{Bernard Day - Chassis Design} Copy to HS.{Lord Ernest Hives - Chair} 25HP, S. M.{Mr Moon / Mr Moore} GEARBOX. DA{Bernard Day - Chassis Design}1/W11.1.32. x 5310 With the investigation we carried out on this box taken from 18-G-4 on Friday last we believe you have all the information from us that you require to proceed into production. The spigot bearing with a plain bush we understand to be that which we approved in Derby, with the qualification that we expect it to be demonstrated that the lubrication by holes drilled into the bottoms of the teeth will work. DA.{Bernard Day - Chassis Design} | ||