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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).
Progress report on design schemes and drawings for the Spectre 12-Cylinder engine and other vehicle components.

Identifier  ExFiles\Box 30\4\  Scan183
Date  12th May 1934
  
- 13 -

BY.1/G.12.5.34.

'SPECTRECodename for Phantom III 12-CYL. ENGINE.'

LeC. 3802 Fan Drive ........................ Recd. 27.2.34.
Detail drawings completed and issued ... 13.4.34.

LeC. 3816 Ignition Wiring and Fixing of Coils ... Recd. 27.2.34.
Detail drawings completed and issued ... 7.5.34.

LeC. 3822 Ignition Tubes .................... Recd. 27.2.34.
Detail drawings completed and issued ... 7.5.34.

LeC. 3823 Water Temperature Regulator ............ Recd. 14.3.34.
Detail drawings completed and issued ... 7.5.34.

LeC. 3828 Inner Ignition Tubes and Rocker Oil Feed Pipes. Recd. 14.3.34.
Detail drawings completed and issued ... 7.5.34.

RR. Sch. 671 Mod. to Main Bearing & Cyl. Head Studs.
Awaiting E's approval.

LeC. 3832 Frame Rear End, Springs, Shock Dampers and Petrol Tank .................................... Recd. 30.4.34.
LeC. 3841 Rear Spring aft Shackle ............ Recd. 30.4.34.
LeC. 3847 Front Shackle Rear Spring ........... Recd. 30.4.34.
LeC. 3867 Rear Shock Damper Connecting Tube ... Recd. 30.4.34.
LeC. 3872 Petrol Tank - 28 Gallons (4.500 Reserve) ... Recd. 30.4.34.
Detail drawings are in hand.

LeC. 3880 Plan of Frame Rear End, Battery Box and Shock Dampers .................................... Recd. 30.4.34.
Detail drawings are in hand.

LeC. 3887 Modified Position of Cylinder Dowels .. Recd. 24.4.34.
This scheme is now cancelled.

N. Sch. 4020 Suspension of Front End of Gearbox ... Recd. 3.5.34.
N. Sch. 4036 Gearbox Front Half Casing ............ Recd. 3.5.34.
N. Sch. 4038 Gearbox Actuating Mechanism ........... Recd. 3.5.34.
N. Sch. 4039 Gearbox Thrust Stay ..................... Recd. 3.5.34.
These schemes are not being detailed, as we understand
that the gearbox design is being altered.

LeC. 3895 Side Levers and Gas Tight Fittings ..... Recd. 8.5.34.
N. Sch. 4031 Spring Pot and Shock Damper - I.F.W.S. Inclined Wishbone Arrgt ............................ Recd. 30.4.34.
N. Sch. 4033 Steering Pivot, Yoke Piece, Brake Operation .. do.. Recd. 30.4.34.
Detail drawings are in hand.
  
  


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