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).
Specification sheet detailing various engine components and their associated design and remark numbers.
| Identifier | ExFiles\Box 124\1\ scan0209 | |
| Date | 12th July 1939 | |
| SPECIFICATION. Specification No.SD.80/5 Sheet No. 2. Issue No. 1 Sec.No. | Title. | Description. | Design No. | Dtls. iss. LOP. No. | Remarks. --- | --- | --- | --- | --- | --- 5000 | Crankcase and Bearings. | C.I.Mono Block with side Exhaust Valves. Vandervell main and Camshaft Bearings. Main Bearing Housings 2.9165+1/2 Dia. Front Engine Support. to Breather on Crankcase. to Stiffened Tappet Doors. to | ECD.1430 P.D.438. ECD.1446. | By/CS.4/EH 28.2.39. | Crankcase Detail EB.4670 with EB.3950. Bearings supplied by Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}5/MH.{M. Huckerby}17.5.39. 5010 | Crankshaft. | .4% Carbon Steel Crankshaft. 2.750 Dia Journals and Vandervell Main Bearings. | ECD.1186. | EB.4796 | Crankshaft Detail EB.4575. As Alumn. 8. 5020 | Spring Drive. | Studebaker Type Damper. No Spring Drive. | | | Cast Iron Pulley Detail EB.4998. 5030 | Connecting Rods. | B.V.Connecting Rods with Std.Big end Brgs. 4 Con.Rods to have Std.Little end Brgs. 4 to have Vandervell Little end Brgs. | | | Detail of Std.Rod EB.4190/1. Little end of rod opened out to suit Vandervell Bearings. 5040 | Piston. | Piston No. EB.3916 Aerolite Tin Plated Rings. | | EB.4318 | 5050 | Cylinder Head. | Overhead Inlet Valves. - to - Inlet Valve seats in 3 1/2% Nickel. As EB.4001 except material. | P.D.292. | EB.4131. | 5060 | Valves and Fittings | .4% carbon Push Rods to Detail EB.4709 Solid Exhaust Valves to Detail EX.33420 Double Springs on Inlet Valves. Aluminium Seal Washer. No Grummet. Motor Component Inlet Valve Similar to EB.3853. Exhaust Valve Spring Detail EB.3256. | | LOP.EB.4112 Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}8/MH{M. Huckerby} 12.7.39. | with exceptions. | ||