Weight comparison of propeller shafts for the Wraith and Phantom III models.
| Identifier | ExFiles\Box 10\5\ 05-page061 | |
| Date | 15th April 1937 | |
| C Rm {William Robotham - Chief Engineer} 658. 15. 4. 37. COMPARATIVE WEIGHTS. WRAITH AND PHANTOM III PROPELLER SHAFTS. Wraith. Hardy Spicer N.S.5024 (supplied by makers) - 36/0888 = 21 lbs. 5 oz. Phantom III. Std. to LOP.G.82089. (less damper) = 26 lbs. 2 ozs. Hardy Spicer N.S.5029 (supplied by makers). = 22 lbs. 15 ozs. Saving in Weight = 3 lbs. 3 ozs. R. {Sir Henry Royce} Hollingworth. | ||
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).