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).
Ignition reliability issues due to poor condenser earthing and proposing a solution involving a flexible metallic connection.
| Identifier | ExFiles\Box 45\3\ Scan004 | |
| Date | 16th April 1920 | |
| Contd. -4- EFC1/T16.4.20. We have already experienced sparking of the nature described under the small nuts on the outside of the condenser casing which secure the earthed side of the condenser, and having explained the importance of good connection-s at this point, steps are being taken to ensure this as far as possible with the present design. To further improve the reliability of the ignition, we consider that a definite metallic flexible connection should be made direct from the metal of the condenser housing to the metal of the engine frame, as shown on our diagram. This would at once bridge both places where poor contacts probably do occur. It would then be nowhere near so necessary to include the contact breaker casing itself, as this would be automatically doubly connected to the frame and does not, in any case, have to carry the oscillatory current. The places on the remainder of the circuit where it is particularly necessary to secure even more sound connections than would be necessary for lighting purposes only, are shown on the diagram. EFC. RR. 235 H.{Arthur M. Hanbury - Head Complaints} (L. 001) Y.S.B. (S.F). 246. 6. 19. D.{John DeLooze - Company Secretary} 2160 | ||