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).
Depot sheet concerning the rectification of drive groans in the Phantom III drive gearbox by fitting a propeller shaft damper.
| Identifier | ExFiles\Box 94\2\ scan0182 | |
| Date | 3rd March 1937 | |
| 328. Hd.{Mr Hayward/Mr Huddy} (For Depot Sheet). Rm{William Robotham - Chief Engineer}/Smthl1/R.3.3.37. P.III DRIVE GEARBOX. It has been agreed by the Administration that in cases of complaint of drive groans at 23 m.p.h. on P.III, a propeller shaft damper should be fitted to the forward end of the propeller shaft. A standard 25/30 or Bentley damper should be used, together with the special flanged universal joint member which carries it. A complete 25/30 or Bentley sliding piece should not be used, as these have soft splines whereas P.III has hardened ones. Rm{William Robotham - Chief Engineer}/Smth. | ||