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).
Specifications for primary point gap, contact breaker timing, and automatic advance characteristics.
| Identifier | ExFiles\Box 48\2\ Scan257 | |
| Date | 26th March 1925 guessed | |
| -2- (4) Primary point gap:- .010" and .012" Contact Breaker timing :- Make. Break. A. {Mr Adams} -67.5° 83° R. {Sir Henry Royce} -5.5° 145° Retard. Advance. Make -6° -68° Break 145° 82° Make 175° 113° Break 326° 264 Range:- 62° Make ratio :- .837 (5) Automatic advance characteristics :- None Hand range:- Auto range :- Total :- Speed. Degrees advanced. Contd. | ||