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 specifications and modifications for the Spectre 12-Cylinder Engine.
| Identifier | ExFiles\Box 133\4\ scan0038 | |
| Date | 12th June 1935 | |
| - 7 - BY.12/G.12.6.35. SPECTRECodename for Phantom III 12-CYL. ENGINE. ----------------------- LeC. 4346 Additional Body Bracket ..................... Recd. 13.2.35. Detail drawings not required. LeC. 4358 31-EX. only. Additional Body Brkt. by 3rd. Xmbr. Recd. 13.2.35. Detail drawings not required. LeC. 4364 Expl. Body Bracket at Rear Dumb Iron ........ Recd. 20.2.35. Detail drawings completed and issued .................. 29.5.35. LeC. 4365 Scuttle Fixing to Frame ..................... Recd. 20.2.35. Superseded by LeC. 4510. N. Sch. 4353 Modfn. to Gearbox Thrust Stay ........... Recd. 6.2.35. Detail drawings completed and issued .................. 4.3.35. N. Sch. 4360 Modified Rear Brakes ...................... Recd. 12.2.35. Detail drawings completed and issued .................. 22.2.35. N. Sch. 4361 Front Brakes with Bentley Type Adjuster .... Recd. 14.2.35. Detail drawings completed and issued .................. 30.3.35. N. Sch. 4365 Rear Brake Equalisers ..................... Recd. 12.2.35. Detail drawings completed and issued .................. 22.2.35. N. Sch. 4366 Layout of Rear Brake Mechanism ............ Recd. 12.2.35. Detail drawings completed and issued .................. 22.2.35. N. Sch. 4367 Modfn. to Clutch Thrust Brg ................ Recd. 11.2.35. Detail drawings completed and issued .................. 19.3.35. N. Sch. 4368 Thrust Stay for more Flexibly Mounted Gearbox Recd. 15.2.35. Detail drawings completed and issued .................. 4.3.35. N. Sch. 4369 Oil Filter for Spring Pot. I.F.W.S. ....... Recd. 13.2.35. Detail drawings completed and issued .................. 1.5.35. N. Sch. 4373 More Flexible Gearbox Mounting .............. Recd. 15.2.35. Detail drawings completed and issued .................. 6.6.35. LeC. 4383 Roller Tappets ............................ Recd. 4.3.35. Detail drawings completed and issued .................. 28.3.35. LeC. 4385 Modfns. to Relief Valve & Oil Filter ........ Recd. 4.3.35. Detail drawings completed and issued .................. 20.5.35. | ||