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).
List of part numbers for sequence starter motors and gears for two different schemes.
| Identifier | ExFiles\Box 64\2\ scan0093 | |
| Date | 8th August 1927 | |
| X7625 8.8.27. Sequence starter motor. (No.1 scheme). X.7620. Sequence starter gear. (No.1 scheme). X.7650. Sequence starter motor (No.2. scheme - sliding armature). 2A. Inward. X.7625A. 2B. Outward. X.7625B. Sequence starter gear. (No.2. scheme). X.7655. ======== EFC. | ||