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 engineering schemes and modifications for the 3½ Litre Bentley chassis and the Spectre 12-cylinder engine.
| Identifier | ExFiles\Box 30\3\ Scan005 | |
| Date | 10th November 1934 | |
| - 5 - BX.1/G.10.11.34. 3½ LITRE BENTLEY CHASSIS. W.Sch.4212 Wraith Gearbox Gears ......................... Recd. 22.10.34. Detail drawings are in hand. W.Sch.4226 Modfns. to Gear Change Bracket to stop Rattles (Expl) ................... Recd. 13.10.34. Detail drawings completed and issued ..... 30.10.34. RR.Sch.775 Attachment for "Melvin" Heater. Detail drawings completed and issued ..... 1.11.34. W.Sch.4236 Suggested Method of Mounting stabilising bumper on existing cars ............ Recd. 27.10.34. Detail drawings will be put in hand as soon as possible. W.Sch.4248 Air Vent for Petrol Filler .................. Recd. 6.11.34. Detail drawings will be put in hand as soon as possible. W.Sch.4253 Stabilising Bumper .......................... Recd. 6.11.34. Detail drawings will be put in hand as soon as possible. SPECTRECodename for Phantom III 12-CYL. ENGINE. RR.Sch.723 Distribution Board. (Without Cutout). Detail drawings are in hand. LeC.4080 Larger Water Pump ............................. Recd. 5.10.34. Detail drawings completed and issued ..... 23.10.34. LeC.4120 Inlet & Exhaust Valve Lift Curve - Short Duration ........................... Recd. 27.9.34. Detail drawings completed and issued ..... 16.10.34. W.Sch.4193 Modfn. to Gearbox Oil Duct ................... Recd. 27.9.34. Detail drawings completed and issued ..... 16.10.34. W.Sch.4192 Mod. to forward servo drag link pin ..... Recd. 18.9.34. Detail drawings completed and issued ..... 17.10.34. W.Sch.4198 Brake Camshaft Adjuster with increased resist- ance to Torsional Flexibility ...... Recd. 27.9.34. Detail drawings completed and issued ..... 2.11.34. W.Sch.4201 Modfn. to Rear Bush for Reverse Shaft .... Recd. 27.9.34. Detail drawings completed and issued ..... 12.10.34. W.Sch.4202 Rear Brake Camshaft Adjusters modified to W.Sch. 4198. ...................... Recd. 27.9.34. Detail drawings completed and issued ..... 5.11.34. W.Sch.4207 Modfns. to 2nd. Speed Actuation ............ Recd. 3.10.34. Detail drawings completed and issued ..... 16.10.34. | ||