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).
Instructions detailing the automatic advance and hand range characteristics for Scintilla Magnetos.
| Identifier | ExFiles\Box 48\2\ Scan137 | |
| Date | 15th July 1924 | |
| ROLLS-ROYCE, LTD. INSTRUCTIONS. To E.Y.B. Order No. W.A.62. Customer's No. X 4187 Auto-matic advance characteristics and hand ranges of Scintilla Magnetos type AM6A (Negative rotation) Nos. 28531 and 28533 NO. 28531 This magneto commences its auto-matic advance at a speed of 650 r.p.m and attains 5° at a speed 830 rpm 10° " " 1040 " 15° " " 1400 " 20° - " - 1680 " 25° - " - 1900 " 30° - " - 2350 " And the maximum amount of 32° at a speed of 2650 rpm (magneto armature or shaft speeds throughout). Hand range = 19° Total range (hand + automatic) = 51° Signed Contd This Sheet must be filed on completion of the work. | ||