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).
On the corrosion failure of a steel spring in the battery ignition distributor head, suggesting material alternatives.
| Identifier | ExFiles\Box 61b\2\ scan0109 | |
| Date | 2nd May 1929 | |
| EFC. WD.{Mr Wood/Mr Whitehead}60. 2.5.29. BATTERY IGNITION DISTRIBUTOR HEAD. We have observed during tests on our bench rig that the small steel spiral springunder the central H.T. supply brush corrodes away and breaks off. Could this spring be made of phosphor bronze wire as in some magneto brushes or could it be nickle plated? The present method of protection, i.e. enamelling appears inadequate. EFC/H.E.West. | ||