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 experimental electrical items fitted to chassis 12-GZ, detailing ignition and generator/distribution components.
| Identifier | ExFiles\Box 57\1\ Scan037 | |
| Date | 28th August 1928 | |
| X5780 EFC/T28.8.28. ELECTRICAL EXPERIMENTAL ITEMS PUT ON CHASSIS 12 - GZ. Ignition Section. Previous standard 22 gauge primary winding coil, together with recently standardised ballast resistance of double value. Scrubbing action of contact breaker as standard item, with tungsten points fitted by the most approved method. Distributor rotor of the mushroom type as a standard item. Magneto - standard R.O.I. Watford. Generator & Distribution Section. If passed by us in time, 20 H.P. dynamo with armature of coarser gauge winding for higher output. Fully temperature compensated green lamp relay switch, together with green indicating lamp. ---------- EFC. | ||