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 modifications and their drawing completion status for the Spectre 12-Cylinder engine.
| Identifier | ExFiles\Box 30\3\ Scan125 | |
| Date | 16th March 1935 | |
| - 13 - BY.1/G.16.3.35. SPECTRECodename for Phantom III 12-CYL. ENGINE. N.Sch.4289 Alternative Methods of fixing Servo Fabrics. Recd. 20.12.34. Detail drawings completed and issued ....... 31.1.35. N.Sch.4296 Alternative Bearing Scheme for Roller Marles Type Steering............................. Recd.14.12.34. Detail drawings will be put in hand if required. N.Sch.4311 Rear Brakes Intermediate Levers ......... Recd. 28.12.34. Detail drawings completed and issued ....... 23.1.35. N.Sch.4313 Modn. to Foot Brake Countershaft Lever ..... Recd. 29.12.34. Detail drawings completed and issued ....... 23.1.35. N.Sch.4316 Revised Upper Triangle Lever with provision for adjusting Castor angle .... I.F.W.S.... Recd. 3.1.35. N.Sch.4317 Revised Lower Triangle Lever with provision for adjusting Castor angle .... I.F.W.S.... Recd. 3.1.35. N.Sch.4318 Modified Front Brake Operating Linkage ..... Recd. 3.1.35. Detail drawings completed and issued ....... 6.2.35. N.Sch.4322 Wing Stay Support ..................... Recd. 3.1.35. Detail drawings completed and issued ....... 16.1.35. N.Sch.4320 Modfns. to 2nd. Speed Permanent Scheme ...... Recd. 3.1.35. Detail drawings completed and issued ....... 28.2.35. N.Sch.4321 Needle Roller Bearing for gears to reduce drag in Gearbox ............................ Recd. 3.1.35. Detail drawings completed and issued ....... 13.2.35. N.Sch.4325 Steering Column Support Brkt. & Gastight Seal in Floorboards with Marles Type Steering - 'E' Steering ........................ Recd. 3.1.35. Detail drawings completed and issued ....... 7.2.35. N.Sch.4329 Strengthened Yoke Piece & Pivot Pin. I.F.W.S. Recd. 5.1.35. Detail drawings completed and issued ....... 6.2.35. N.Sch.4331 Frame Test Pieces ....................... Recd. 9.1.35. Detail drawings completed and issued ....... 12.1.35. N.Sch.4327 Layout of Servo Brake Rods on Semi-Servo System.Recd.5.1.35. Detail drawings completed and issued ....... 23.1.35. | ||