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).
Modification to the Wraith III transmission shaft coupling to prevent stretching and distortion.
| Identifier | ExFiles\Box 156\4\ scan0079 | |
| Date | 2nd March 1938 | |
| BY/NO. c. Rm.{William Robotham - Chief Engineer} 13BO DA.{Bernard Day - Chassis Design}3/G.2.3.38. WRAITH III. TRANSMISSION. AH GRY{Shadwell Grylls} Herewith is G.CD.520 shewing a modification to the transmission shaft coupling to prevent stretching and distortion when tightening up on taper. We have increased the dimensions of the boss rather than move the web into the centre of the boss, as the latter is said to considerably increase the cost. Will you please detail and issue for all Wraith cars. DA.{Bernard Day - Chassis Design} | ||