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).
Investigation into an overheating issue on a Phantom III caused by a choked filter in the radiator outlet pipe, with a suggested design change.
| Identifier | ExFiles\Box 91\2\ scan0293 | |
| Date | 24th August 1937 | |
| 300a CHATEAUROUX. Rm{William Robotham - Chief Engineer}/IMW{Ivan M. Waller - Head of Chateauroux}/3/JAB.24.8.37. To. Rm.{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/Std. c. Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux} 32-EX. PHANTOM III. Filter In Radiator Outlet Pipe. We removed the radiator yesterday in the course of investigating various fouls at the front end, and found that the filter was badly choked up. We enclose as much of the debris as we could collect, and Rm{William Robotham - Chief Engineer}/Les.{Ivan A. Leslie} has photographed the filter as we found it and will supply the pictures in due course. As far as we could judge the flow would have been seriously restricted and at least some of our over-heating could be attributed to it. We think that trouble of this kind would occur in service with this arrangement and suggest that as an alternative, a stand pipe with a flared upper edge be built into the outlet orifice of the bottom tank before the radiator is assembled. This should effectively trap any lumps of solder large enough to harm the pump rotor, which is the only reason for the gauze. Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} Frank. Waller. OUTLET FROM BOTTOM TANK. | ||