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 dynamos on 'SS' chassis, detailing differences for test and production models.
| Identifier | ExFiles\Box 60\1\ Scan078 | |
| Date | 3rd February 1929 guessed | |
| X7660 X.7660 - DYNAMOS FOR 'SS{S. Smith}' CHASSIS. For 10,000 miles test chassis : Opposite rotation machine fitted with Morganite E.G.2. grade brushes with 45° bevel, machine otherwise standard with thick armature stampings. For 'SS{S. Smith}' production. Opposite rotation machines with standard Morganite E.G.2. grade brushes, and thin armature stampings. E.F.C EFC. | ||