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 distributor, platinum point gap, and contact breaker timing.
| Identifier | ExFiles\Box 48\3\ Scan081 | |
| Date | 11th August 1940 | |
| -2- Contd. (5) Distributor :- Total pitch :- 1.686" Conductor width :- 1.040" Brush width :- .170" Position of brush at break (advanced) :- .16" " " " " (retarded) :- .60" (6) Platinum point gap :- .010" Contact breaker timing :- [Left Table] Make. Break. A. {Mr Adams} +14.5° 92.5° B. 63.° 141.° [Right Table] Retarded. Advanced. Make. 63° +14° Break. 142° 93° Make. 243° 195° Break. 320° 272° Range :- 48.5° Make ratio :- .433. Contd. | ||