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 engine components and alterations.
| Identifier | ExFiles\Box 109\1\ scan0149 | |
| Date | 26th July 1939 | |
| The Sections marked * will require alterations if it is decided to have a Chain Driven Camshaft in place of Gears. See Memo BY/CS.3/EH.17.3.39. SPECIFICATION. Specification No. SW.60/7 Issue No. 1 Sheet No. 2. Sec. No.: 5000 Title: Crankcase and Bearings. Description: Vandervell Main Bearings also Camshaft Bearings. Main Bearing Housings 2.9165+1/2. Modified Petrol Pump Operation. To Distributor Housing. To Front Engine Support. To Modified Dynamo Mounting. To Stiffener Tappet Covers. To Breather on Crankcase. To Design No.: ECD.1257, DCD.1408, EGD.1434, ECD.1461, ECD.1446, PD.438. Remarks: Crankcase Top Half. EB.4669, EB.4139, EB.3778 & EB.4919. Crankcase Bottom Half. EB.5018 & EB.3779. Mechanical Petrol Pump. A.C. 3 Cylinder Bores Unlined and 3 to be fitted with Phos Chrome Short Inserts. BY/CS.1/EH.26.7.39. BY/CS.1/EH.13.6.39. Sec. No.: 5010* Title: Crankshaft. Description: .4% Carbon Steel Crankshaft. 2.750 Dia Journals and Vandervell Main Bearings. Nose end of Shaft to suit Wraith Spring Drive. Design No.: EXS.1301, ECD.1227. Dtls. iss. LOP. No.: No Detail Remarks: See memo BY/CS.1/EH.14.6.39. EB.4685 Modified to suit EXS.1301. Sec. No.: 5020. Title: Spring Drive. Description: RR.Wraith Type Spring Drive. Single Belt. Steel Pulley EB.5014. Design No.: PD.439. Remarks: See also memo BY/CS.1/EH.14.6.39. Sec. No.: 5030 Title: Connecting Rods. Description: As B.V. 'A' Series with Standard Big End Bearings. Vandervell Little End Bearings. Remarks: EB.4190/1 Detail of Std.Rod. Little end of Rod opened out to suit Vandervell Brgs. Sec. No.: 5040 Title: Piston. Description: Aerolite Piston. Detail EB.3916. Aerolite Tin Plated Rings. Design No.: EB.5179. Sec. No.: 5050 Title: Cylinder Head. Description: Cylinder Head. EB.3844. Inlet Valve Seats in 3 1/2% Nickel. Oil Filler in Rocker Cover. Design No.: PD.430. Dtls. iss. LOP. No.: BY/CS3/EH. 26.6.39. Remarks: New LOP. required to include new Rocker. cover and Water Outlet Conn. to LCD.1452 Remainder of parts similar to LOP. EB.4007. Thermostat not required. | ||