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).
Log of engineering updates and drawings for the Spectre 12-Cyl. Engine and Wraith Chassis.
| Identifier | ExFiles\Box 30\3\ Scan128 | |
| Date | 16th March 1935 | |
| - 16 - BY.1/G.16.3.35. SPECTRECodename for Phantom III 12-CYL. ENGINE. RR. Sch. 842 Main Fuse Fixing (Cartridge Type). N. Sch. 4396 Front Brake & Pivot for Front Axle ............ Recd. 4.3.35. N. Sch. 4394 Front Axle .............................. Recd. 4.3.35. N. Sch. 4397 Modified Front Axle Control ............... Recd. 4.3.35. Detail drawings are in hand. LeC. 4218 Larger Exhaust Valve (1.250 dia.) ......... Recd. 4.3.35. Detail drawings completed and issued ........ 9.3.35. LeC. 4224 Air Inlet Scoop for Dashboard. 31-EX. ...... Recd. 2.3.35. LeC. 4382 Body Brackets & Mounting. 32-EX .......... Recd. 2.3.35. J-C. 4391 Side Spare Wheel Carrier ................ Recd. 7.3.35. Detail drawings will be put in hand if required. LeC. 4367 Louvred Bonnet .......................... Recd. 22.2.35. Detail drawings completed and issued ........ 4.3.35. LeC. 4306 Diagram of Brake Leverages - Semi-Servo System. Recd. 22.2.35. Detail drawings not required. WRAITH CHASSIS. RR. Sch. 774 Speedometer Drive. Detail drawings are in hand. LeC. 4152 Connecting Rod - White Metal Big End ...... Recd. 15.11.34. Detail drawings will be put in hand if required. LeC. 4163 Crankcase, Crankshaft & Brgs............ Recd. 15.12.34. Detail drawings are in hand. LeC. 4165 Cylinder Head, Valve Gear & Valve Rocker Cover. Recd. 20.12.34. LeC. 4164 Camshaft & Tappet Mechanism ............. Recd. 15.12.34. LeC. 4166 Cylinder Head and Valve Lift Diagram ...... Recd. 20.12.34. LeC. 4212 Starter Motor Housing & Rear End of Crankcase Recd. 18.12.34. LeC. 4259 Details of Cams ......................... Recd. 17.12.34. LeC. 4260 Slipper Flywheel and Fan Pulley .......... Recd. 18.12.34. LeC. 4264 Cross Water Passage & Oil Temperature ..... Recd. 20.12.34. LeC. 4270 Valve & Tappet Springs ................. Recd. 22.12.34. N. Sch. 4304 Modfns. to Gearbox Casing to accommodate larger servo. 20.12.34. N. Sch. 4319 Flywheel & Single Plate Clutch ......... Recd. 5.1.35. Detail drawings will be put in hand as soon as possible. | ||