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 to the specification for the 12 Phantom III Production Chassis.
| Identifier | ExFiles\Box 91\1\ scan0123 | |
| Date | 19th October 1935 | |
| X300 19.10.35. Specification for 12 Phantom III Production Chassis. Modifications to specification By/Cgh.{W Clough}1/G.4.10.35. (1) Carburetters to E/PSN.2/MN.11.10.35 (air silencer to suit, 7" dia.). (2) Oil relief valve, LOP. E.86853. 3. Hs.{Lord Ernest Hives - Chair}2153 Valves. 2. Hs.{Lord Ernest Hives - Chair}2155 Caps. 1. Hs.{Lord Ernest Hives - Chair}2154 Cap. (3) Valves and fittings, LOP. E.86922. Clearance between plungers and casings to be .001 ± 1/10. Plunger return springs E.86880. Strengthened Dural push LeC.4626. Double valve springs Hs.{Lord Ernest Hives - Chair}1827 outer E.86364 inner. LeC.4633 modified metering screw for tappets. (4) Cylinder heads, LeC.4711 & 4735, which incorporates improved oil draining and larger dia. exhaust valve stems. (5) Delete Ex.18898 stand pipes in camshaft well. (6) LeC.4691 spiral grooved dynamo spindle. (7) Stops to prevent the contact breakers being pulled open and overstraining the return springs. (8) Oil retainer to LeC.4672. (9) White metal bearings throughout, strap type rods. (10) Pistons fully split LeC.4617. Outstanding parts to follow specification for No.10 unit and its modifications, RHC{R. H. Coverley - Production Engineer}/CP.1/EP.{G. Eric Platford - Chief Quality Engineer}5.9.35. Hs{Lord Ernest Hives - Chair}/L.H.Swindall. | ||