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).
Creaking road wheels on the Phantom III, caused by an unsatisfactory fit of the tapers on the wheel shell and removing nut.
| Identifier | ExFiles\Box 96\4\ scan0157 | |
| Date | 18th December 1936 | |
| To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} RHC.{R. H. Coverley - Production Engineer} Mx.{John H Maddocks - Chief Proving Officer} 356 Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies}4/AP.18.12.36. PHANTOM III. ROAD WHEEL SHELLS AND REMOVING NUTS. We are having a lot of trouble lately on Phantom III. with creaking road wheels. This is due to the very unsatisfactory fit of the tapers on the wheel shell, and the removing nut. The drawing of the wheel shell G.53296 shews the taper as 27½° + ¼° whereas the drawing of the removing nut G.54854 shews the mating taper to be 27½° ± 2° the latter having far too big a margin of error, consequently we are getting nuts bedding only on 30% to 50% of the taper. Road wheels are also coming through 2° out where a ± ¼° is given. These points urgently require the attention of Messrs Dunlops. Rm{William Robotham - Chief Engineer} FD.{Frank Dodd - Bodies} | ||