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 drawings and modifications for the 20/25 HP Chassis and Spectre 12-Cylinder Engine.
| Identifier | ExFiles\Box 30\4\ Scan235 | |
| Date | 14th July 1934 | |
| - 10 - BY.1/G.14.7.34. 20/25 HP. CHASSIS. LeC.3909 Flexible Rear Engine Mounting................. Recd. 10.5.34. Detail drawings completed and issued .............. 6.6.34. LeC.3912 Tie Rods for Engine (Flexible Engine Mounting) .. Recd. 10.5.34. Detail drawings completed and issued .............. 16.6.34. LeC.3914 Universal Suspension for Silencer and Rear Exhaust Pipe ...................................... Recd. 17.5.34. Detail drawings completed and issued .............. 16.6.34. LeC.3920 Modified Water Connections for use with Flexible Engine Mounting ............................ Recd. 11.5.34. Detail drawings completed and issued .............. 25.5.34. LeC.3931 Flexible Front Engine Mounting ................ Recd. 17.5.34. Detail drawings completed and issued .............. 14.6.34. LeC.3937 Modfn. to Gear Box Rubbers .................. Recd. 23.5.34. Detail drawings completed and issued .............. 1.6.34. LeC.3940 Modfn. to Radiator Escape Pipe to suit Flexible Engine Mounting ............................ Recd. 28.5.34. Detail drawings completed and issued .............. 11.6.34. LeC.3942 Engine Support Feet ........................... Recd. 28.5.34. Detail drawings completed and issued .............. 13.6.34. C.3943 Modified Expansion Box and Intermediate Pipe Stay.Recd. 28.5.34. Detail drawings completed and issued .............. 8.6.34. LeC.3989 Alterations to Guide .......................... Recd. 16.6.34. Detail drawings completed and issued .............. 18.6.34. SPECTRECodename for Phantom III 12-CYL. ENGINE. N.Sch.3976 Clutch with Aluminium Back Plate ........... Recd. 17.2.34. N.Sch.3977 Clutch - Alternative Scheme with Steel Back Plate ...................................... Recd. 17.2.34. N.Sch.3981 Clutch Casing & Clutch Operation .......... Recd. 21.2.34. N.Sch.3982 Clutch Casing - Additional Views ............ Recd. 21.2.34. Detail drawings completed and issued .............. 4.5.34. | ||