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).
Specification details for the Silver Ripple model, covering the instrument board and electrical fittings.
| Identifier | ExFiles\Box 168a\4\ img117 | |
| Date | 27th May 1939 | |
| To. HPS{Horace Percy Smith - Experimental Factory Mgr} c. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} ✓ 6144. c.a.P BY/RD.2/B.27.5.39. SILVER RIPPLE. 1.R.1. Further to the Specification No. SR.1/1, Issue No.1, issued for the above, the following material should be ordered :- Sec.7190. Instrument Board. This will be the Bentley V type, to LOP. DB.{Donald Bastow - Suspensions}2232, but omit the rev. counter and its drive. The speedometer suitable for this particular car will be similar in general dimensions to the Bentley V instrument - DB.{Donald Bastow - Suspensions}2123, but should be calibrated to 727 r.p.m. The dial reading to 90 m.p.h. R.R. monogram. A new Coachbuilder's drawing will be required, and this will be issued as soon as available. Piece No. DW.970. Sec.7360. Wiring and Fittings. LOP. DB.{Donald Bastow - Suspensions}2174. Sec.8170. Distribution Board. LOP. DW.536. Sec.8280. Lamps, Horns & Fittings. This section will require a new LOP., using the standard Wraith Headlamps and Horns with other standard Bentley parts. | ||