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).
Instructions for fitting a flexible blade Bentley type fan assembly to a 25/30 hub, requiring modification of the flange holes.
| Identifier | ExFiles\Box 101\2\ scan0107 | |
| Date | 8th October 1936 | |
| X5/4 To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/Std.18/JH. 8.10.36. We hand you herewith one flexible blade fan assembly (Bentley type) and one 25/30 hub. Will you please fit the fan blade assembly to the 25/30 hub. This necessitates reaming out the eight flange holes to take 2.B.A. bolts instead of the present 3.B.A. ones, and rechecking the balance of the complete fan. Hs{Lord Ernest Hives - Chair}/Std. | ||