Comparison of distributor dimensions and timing settings for Bosch and Watford magnetos, with an accompanying diagram and table.
| Identifier | WestWitteringFiles\I\July1922\ Scan122 | |
| Date | 31th July 1922 | |
| Contd. BOSCH & WATFORD MAGS -4- EFC {E. Fowler Clarke - Electrical Engineer} /T31.7.22. The distributor dimensions we found to be as in the following sketch and table :- 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 EC6c. 1.257 .805 .19 .24 .50 Similar to previous EC6 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 | ||
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).