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).
Servo inefficiency on the Phantom III and starter motor jamming on the 25/30, due to failing cadmium plating.
| Identifier | ExFiles\Box 95\4\ scan0145 | |
| Date | 2nd June 1937 | |
| Rm.{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} e.{Mr Elliott - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} 3x1 File Cricklewood 2.6.37. PHANTOM III - SERVO LINKAGE. There was a case at Cricklewood of servo in-efficiency caused by the seizing up of the forked lever anchorage on the servo driving plate. The pin which the rod swivels on is cadmium plated. The plating either peels off, or there is not clearance allowed for the plating. The one in question had torn all the plating off and was scored. Cliburn informs me that the same thing happens with the 25/30 starter motor shaft. The plating peels off causing the pinion to jam on the thread. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||