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).
Instruction note on the testing of a Watford E06 magneto, highlighting a high minimum sparking speed.
| Identifier | ExFiles\Box 48\2\ Scan319 | |
| Date | 9th September 1925 | |
| X-8796 ROLLS-ROYCE LTD. INSTRUCTIONS. To E.Y.B Order No. WB {Mr Brazier / Mr Bell} 41 Chassis's No. X 4181d Watford E06 magneto No 71063 This magneto has now been tested to our production specification and found to be OK with the exception, that the minimum speed for regular sparking in the fully advanced position was high i.e 320 rpm. This is probably due to the increased range on this magneto as compared with others of the same type. The range is 66° as compared with an average of 60° with the majority of magnetos. Signed H.E.W. This Sheet must be filed on completion of the work. | ||