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 suggested items for a 10,000-mile test on a new experimental 20 HP chassis.
| Identifier | ExFiles\Box 57\1\ Scan035 | |
| Date | 5th June 1928 | |
| X5760 To EY. from EFC. c. BY/RD. EFC1/T5.6.28. 12 G 4. Suggested items to be instructed for the new experimental 20 H.P. chassis for 10,000 mile test:- Battery & Instrument Section. Metal battery box. (If Roy.{Sir Henry Royce} can obtain one of these in time. A.T. Speedometer of the new type with full temperature compensation. 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 head with interior surface varnished with Armacell varnish. Distributor rotor of the mushroom type as a standard item. Magneto - standard R.C.1. Watford. H.T. Wiring - wires to alternate plugs of Maconite and Gloverite respectively. 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. | ||