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).
The production and modification of engine components for the Bentley 60 chassis.
| Identifier | ExFiles\Box 123\5\ scan0270 | |
| Date | 30th January 1939 | |
| 1044 ABS. c. Rm.{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} By/Ald.{F. Allwood - Experimental Design}1/AW.30.1.39 BENTLEY 60 CHASSIS. CRANKCASE & BEARINGS. SECTION 5000. VALVES & FITTINGS. SECTION 5060. Please receive herewith 2 Blue Prints of each of the following:- Sec: 5060. EXS.1367. Exhaust Valve - 6 off. EXS.1368. Exhaust Valve (sodium Cooled) - 6 off. Sec: 5000. EXS.1369. Exhaust Valve Seat - 6 off. EXS.1370. Modification to Crankcase. The following part will also be required:- EB.4481. Plug for Sodium Cooled Valve - 6 off. The above is as requested by memo Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards}1/MH.{M. Huckerby}10.1.39, to provide 1.400 dia valves instead of 1.500 dia, so that if satisfactory the combustion space may be reduced, the valve also being lighter. Kindly produce 1 set of each part. Attached to Rm{William Robotham - Chief Engineer}/Ed{J. L. Edwards}'s copy are Blue Prints of EXS.1369 and EXS.1370, so that he may deal with the British Piston Ring Co. in the ordering of the valve seats. EXS.1370 shows the adaptation of the valve seat to the Crankcase. Ald{F. Allwood - Experimental Design} By/Ald.{F. Allwood - Experimental Design} | ||