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).
The failure of the Phantom III radiator ball valve plug and a proposed solution.
| Identifier | ExFiles\Box 131\2\ scan0007 | |
| Date | 10th August 1937 | |
| K/W. (crossed out) Dy.{F R Danby} (crossed out) M.x. (crossed out) Rm.{William Robotham - Chief Engineer} (crossed out) (SD) 1113 hsla Thry/sod By has dealt with this CRICKLEWOOD. Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/DPB/10.8.37. PHANTOM III RADIATOR. -------------------- Ball Valve plug for filler cap E.87232. -------------------- There have been four cases recently of the thread portion of the Ball Valve breaking in two. The fracture shews that the thread practically cuts the barrel portion through. It can be strengthened up easily by a smaller inside dia. which will not affect the operation of the valve. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||