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).
Experiments with ignition system components like tungsten points and scrubbers, comparing Delco-Remy and Bosch systems.
| Identifier | ExFiles\Box 35\6\ scan 331 | |
| Date | 27th September 1927 | |
| EFC1/T27.9.27. -2- Contd. meeting and parting exactly right, and then, judging from the results of our experiments, the points will behave nicely, with whatever arrangement of coil and ballast we care to use. Either the Delco-Remy have been lucky in just hitting upon the correct mechanical arrangement, or presumably they have been through a series of experiments to find out this point in much the same way as we are doing at present. In the case of the U.S.A. Bosch, they do not appear to have arrived at a point even so far as we have ourselves arrived at. The reason of their being reasonably successful is probably due to the frequent use of spares and the ease with which they can be obtained. It would probably be an advantage to us as a firm to have the conditions such that one set of tungsten points lasts almost indefinitely, or at any rate for over 50,000 miles. We appear now to be approximating to a knowledge of the conditions which are necessary to this end. EFC. The principal experiments we have now running are - 1. Scrubber without damper, but with initially misaligned screw point. 2. Scrubber with mushroom rotor. | ||