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).
Revised specification for Chassis 58 G.N. Engine Unit Q.R.25, listing completed work and incorporated parts.
| Identifier | ExFiles\Box 18\3\ Scan366 | |
| Date | 10th October 1932 | |
| To. Hs{Lord Ernest Hives - Chair} from RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} c. Hd.{Mr Hayward/Mr Huddy} (Records) c. AJL. X7960. RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}9/AP10.10.32 CHASSIS 58 G.N. ENGINE UNIT. Q.R.25. Specification of the above is revised as follows:- WORK COMPLETED 7.9.32 Cylinder (5.25 Comp. Ratio) LeC.2993. 5.25 Comp. Ratio Cylinder Head fitted incorporating:- LeC. 2993 - Double Valve Springs. E.{Mr Elliott - Chief Engineer} 82455 Cylinder Head - Mod. to E.82960. E.{Mr Elliott - Chief Engineer} 83094 Exhaust Valve Guides. E.{Mr Elliott - Chief Engineer} 82958 Inlet Valve Guides. Valves & Fittings LeC.2993. The following details fitted incorporating:- LeC.2993-Double Valve Springs. E.83095 - Exhaust Valves. E.82957 - Valve Stem Packings opened out to suit. E.82458 - Inlet Valves. Hs.{Lord Ernest Hives - Chair}688 & Hs.{Lord Ernest Hives - Chair}665 - Valve Springs. Ex.8896 - Top Valve Spring Washers. Ex.8899 - Bottom Valve Spring Washers - Outer. Ex.8895 - " " " " - Inner. Hs.{Lord Ernest Hives - Chair}502 - Tappet Springs. Camshaft. E.82448 Camshaft - 114° between Cams. Spring Drive LOP. E.79915 - LeC.3104. The following details fitted incorporating:- LeC.3104 - Strenghted Friction Plate. Ex.8680 - Friction Plate. E.79729 - Damper Wheel - Mod. to Ex.8679. E.76620/1 - Driving Dogs - " " Ex.8681/2 Con:- | ||