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 modifications to the Phantom III gearbox speedo drive lubrication system.
| Identifier | ExFiles\Box 94\1\ scan0366 | |
| Date | 9th May 1936 | |
| To RHC{R. H. Coverley - Production Engineer}, X328 Hs{Lord Ernest Hives - Chair}/FJH{Fred J. Hardy - Chief Dev. Engineer}, 7/JH, 9. 5. 36. Phantom III Gearbox Speedo Drive Lubrication. This is to confirm that, in connection with experiments to improve the lubrication of the speedo drive gears on Ph. III, we have asked you to remove the baffle washer on the Servo drive shaft of 30-EX and replace it with a plain distance washer. In addition that we have asked you to drill an extra 5/16 dia, drain hole immediately alongside and at the same level as the existing drain hole in the speedo drive casing. This can be done with the gearbox in position. Hs{Lord Ernest Hives - Chair}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||