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).
B.50 specification sheet detailing instrument, battery, wiring, and starter motor components.
| Identifier | ExFiles\Box 111\2\ scan0334 | |
| Date | 14th April 1938 | |
| 800 B.50 SPECIFICATION. SECTION D.{John DeLooze - Company Secretary} TITLE. LOP. NO. 7190 Instrument Board. DB.{Donald Bastow - Suspensions}1660 Different to B.III. 7290 Battery box and fittings. DB.{Donald Bastow - Suspensions}1573 B.III. One piece box finished anti-sulphuric paint on L.H. side of chassis. 7360 Wiring and Fittings. DB.{Donald Bastow - Suspensions}1564 B.III. Harness wiring similar to B.III using rad. harness DB.{Donald Bastow - Suspensions}1565 ex. B.III, new harness DB.{Donald Bastow - Suspensions}1770 to DB.{Donald Bastow - Suspensions}1772 for remainder of wiring. The new harness suits the new frame and dashboard, provides cables for all driving lights combinations, suits box type number plate with reversing light and single wire petrol gauge with warning light; and provides a direct coil connection during starting. Horn wiring not final 8000 Starter motor armature. DW.650 New, Issued for B.50. ECONOMY. 8010 Bearing brackets etc. DW.655 New, Issued for B.50. 8020 Commutator. D.55020 B.III. (Production) 8030 Frame and Field winding DB.{Donald Bastow - Suspensions}1768 New, Issued for B.50. 8040 Starter motor drive. DB.{Donald Bastow - Suspensions}1679 Use ex B.III. 8050 Horn switch. DW.634 B.III. Moulded button and rigid contacts to DCD.544. Suits standard Wraith quadrant FW.427 DC. 8060 Automatic switch. DW.460 New, issued for B.50. The latest exp. design. Simplified brush gear to DCD.157. Oilite bush at commutator end and simplified core cheeks to RR.Sch. 1073. Reduction gear modified for easy broaching. WHY NOT LUCAS SWITCH cont'd | ||