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).
Test report on condenser capacity effects on screw point oxidation and arcing during bench rig running.
| Identifier | ExFiles\Box 61b\1\ scan0126 | |
| Date | 8th October 1930 guessed | |
| WES1 contd (2) then run on the bench rig for 180 hours at the conclusion of which it was observed that 75% of the screw point surface had cleared of oxide and shewed the characteristic grey surface associated with properly working tungsten points. As this result was remarkable, a condenser of increased capacity .43 mf was fitted to ascertain if the points returned to their original condition. At the end of a further 80 hours running this was found to be the case, oxidation all over the screw point surface being apparent. A very small capacity condenser .16 mf was then fitted but after 20 hours running the points were still badly oxidized, this capacity being evidently too low to avoid undue arcing. The condenser fitted to the | ||