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 drawing schedules and modifications for the Spectre 12-Cylinder engine.
| Identifier | ExFiles\Box 30\4\ Scan299 | |
| Date | 4th October 1934 | |
| - 13 - BY.1/G.4.10.34. SPECTRECodename for Phantom III 12-CYL. ENGINE. N.Sch.4068 Layout of Rear Brake Mechanism ............ Recd. 1.6.34. Detail drawings completed and issued ........ 19.7.34. N.Sch.4096 Run of Brake Rope, Servo to Front Wheels. Recd. 18.6.34. Detail drawings completed and issued ........ 25.7.34. N.Sch.4097 Intermediate Lever, Front Brake Operation ... Recd. 18.6.34. Detail drawings completed and issued ........ 25.7.34. N.Sch.4100 Modfns. to Rear Brake Cross Ropes necessitated by Exhaust Swan Neck .................... Recd. 18.6.34. Detail drawings completed and issued ........ 19.7.34. N.Sch.4108 Layout of Bonnet Side and Rest Plate (Plan View).Recd.26.6.34. N.Sch.4109 Layout of Bonnet and Rest Plate (Elevation). Recd. 26.6.34. Detail drawings completed and issued ........ 24.7.34. RR.Sch.707 Mounting of Lucas Horn. Detail drawings completed and issued ........ 25.7.34. RR.Sch.710 Head & Side Light Cables in Radiator Shell .. Detail drawings completed and issued ........ 25.7.34. RR.Sch.711 Layout of Oil Pipe to Servo. Detail drawings completed and issued ........ 16.7.34. RR.Sch.713 Mod. to Switchbox. Switching for Warning Light and Petrol Pumps. Detail drawings completed and issued ........ 17.9.34. RR.Sch.723 Distribution Board. (Without Cutout). Waiting approval by E.{Mr Elliott - Chief Engineer} RR.Sch.724 Modified Starter Switch in Switchbox. Detail drawings completed and issued ........ 17.9.34. LeC.3860 Connecting Rods (Alternative to LeC.3728) ....Recd.31.7.34. Detail drawings completed and issued ........ 6.9.34. LeC.4012 Modified Oil Feed & Plunger - SpectreCodename for Phantom III Auto. Adj. Tappets ............................Recd. 29.6.34. Detail drawings completed and issued ........ 18.7.34. | ||