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).
Note specifying a three-cell battery, 6-volt lighting, and a six-volt Carpentier trembler coil for a car fitted with a Ryan dynamo.
| Identifier | ExFiles\Box 31\2\ Scan037 | |
| Date | 22th April 1910 | |
| Extract from N/21/S/B/22/y10 41B re 19 G B This car being fitted with the Ryan 6 volt dynamo will only have a three cell battery & a 6 volt lighting job. Also a six volt coil with no 2 way switch & the coil should have a Carpentier trembler. RC{R. Childs} | ||