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 modifications and updates to various vehicle components including the carburettor, lubrication, and transmission.
| Identifier | ExFiles\Box 169\1\ img047 | |
| Date | 14th April 1930 | |
| (5) Starting Carburetter to LeC 2731. Fixed Maximum restriction, modified to suit Extra Cylinder Lubrication. Extra Cylinder Lubrication to L.O.P. E.80088. Increased diameter of Main Supply Pipe to arrgt: E.80333. Fan to L.O.P. E.77672. Flywheel & Clutch to L.O.P. G.76591. Incorporating:- N.S.2973 Oiling of Clutch Spigot Bearing etc. N.S.2967 Fabric on Disc. (1) Pressure Plates G.76580/7 modified to drgs: Ex.4768/9 in High Carbon Steel. (2) Ferrule G.76554 modified to drg: Ex.4770 in S/N. (3) Distance Piece G.76535 modified to drg: Ex.4756. (4) Springs G.73710 for rear pressure plate 50% stronger, to drg: Ex.4767. (5) Slotted Friction Plate with Ferodo rivetted on in segments to Ex.4766. Gear Box & Actuating Gear to L.O.P.'s G.76764 & G.78367. Incorporating N.S.2973 Oiling of Clutch Spigot Bearing. N.S.2925 Rubber Suspension at Rear of Gear Box. N.S.2988 Damper for Brake Gear. (1) Gear Box G.78236 modified to cure oil leaks from Crankcase to Drg: Ex.4547 using louvred cover Ex.4711. (2) New Hardy Fabric Coupling with rivetted on plates. 1st. & 3rd. Motion Shafts to L.O.P. G.76638 - N.S.2973. G.78185 Shaft used in conjunction with scheme for Oiling of Clutch Spigot. contd. | ||