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).
Modified H.T. pick-up for the Watford EO6 magneto to resolve issues with sticking carbon brushes.
| Identifier | ExFiles\Box 48\2\ Scan476 | |
| Date | 18th July 1927 | |
| X8796 To BY. {R.W. Bailey - Chief Engineer} from EFC. {E. Fowler Clarke - Electrical Engineer} MODIFIED H.T. PICK-UP FOR WATFORD EO6 MAGNETO. My assistant reports as follows :- "Considerable trouble had been experienced with the H.T. pick-up carbon brush sticking in the holder causing burning of the bakelite moulding. Messrs. North have since produced this H.T. pick-up moulding in ebonite and have modified the carbon brush by cutting a small clearance space to prevent seizing in the holder. One of these modified pick-ups has now completed a 10,000 mile test on chassis 8-EX with entirely satisfactory results. Examination showed that the carbon brush was working perfectly freely in the holder. We have verified that this modified H.T. pick-up is now being fitted to standard EO6 magnetos on production." EFC. {E. Fowler Clarke - Electrical Engineer} | ||