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).
Confirming the decision to use white metal bearings for all Spectre engines, both for new production and existing units.
| Identifier | ExFiles\Box 91\1\ scan0051 | |
| Date | 23th August 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} x300 Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}3/KW.23.8.35. SpectreCodename for Phantom III Engines. As it has been decided that SpectreCodename for Phantom III engines will start on production with white metal bearings, we wish to convert all our own engines also to white metal bearings. This will give us an opportunity of overcoming any troubles that may appear on production engines. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||