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 Engine Unit No. 21 (Chassis 25-EX).
| Identifier | ExFiles\Box 169\1\ img183 | |
| Date | 22th June 1931 | |
| To Hs.{Lord Ernest Hives - Chair} from RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}3/LS.22.6.31. ENGINE UNIT NO. 21. (CHASSIS 25-EX.) We give herewith complete revised specification of the above Engine. PASSED TO TEST 20.6.31. Crankcase & Bearings to LOP. E.79019. E.82209 Base Plate to suit Scheme 1480 - A.C. Petrol Pump. New set Main Bearings E.78763-4-5-6-7-8-9-70.- fitted 4.6.31. Crankshaft. E.79675 Crankshaft (Nitralloy.) Larger diameter Crankpins (2.375.) to suit low Inertia Spring Drive. Spring Drive to LOP.E.79915. E.82275 Fan-Pulley. E.82276 Starting Dog Cap - incorporating Lec.2911 - Diamond Engine Mounting. Connecting Rods. E.79356-7 Connecting Rods and Caps. E.79360-1 Bearings and Liners(Whitemetal.) to suit larger diameter Crankshaft. Pistons. New set of Pistons E.82041 - long Skirts. using existing Gudgeon Pins and Rings to LOP.E.79533. Cylinders. 5-1 Comp: Ratio Cylinder Head E.82168. Front End Cover to Ex. 5159. Remaining parts to complete are to LOP. E.79033. | ||