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).
Magneto distributor dimensions, platinum point gaps, and contact breaker timing.
| Identifier | ExFiles\Box 49\5\ Scan173 | |
| Date | 31th July 1922 | |
| Contd. -4- EFC {E. Fowler Clarke - Electrical Engineer} 1/T31.7.22. The distributor dimensions we found to be as in the following sketch and table :- D or E Magneto. Conductor pitch. A Conductor Width. B Brush width. C Overlap at break advanced. D Overlap at break retarded. E Remarks. U.S.A. Bosch ZR.6. 1.445 .888 .324 .180 .480. Same as ZR.6 ED. {J. L. Edwards} 18 previously reptd. Watford EO6c. 1.257 .805 .19 .24 .50. Similar to previous EO6 mags Watford ELO. 1.44 .975 .20 .18 .66 (6) The platinum point gaps on magnetos as received were .016", .016" and .011" respectively. Contact Breaker Timing. Referring to the position when the armature is straight across the poles (i.e. the position in which the | ||