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).
Engine component testing and development plans for B.60 and B.80 units.
| Identifier | ExFiles\Box 155\2\ scan0330 | |
| Date | 15th June 1939 | |
| -4- B.60 NO.3 UNIT. - Cont'd.{John DeLooze - Company Secretary} Flush top pistons repeat (a) ExS.1383 head with turbulent lip machined away ExS.1758. (b) Std. cylinder head EB.3844. (c) Modified head PD.368. (d) Modified head PD.368 incorporating ExS.1769 greater clearance round the exhaust valve. Further tests dependent upon results obtained. B.80 NO.2 UNIT. Complete investigation of crank and camshaft oscillations as previously specified. Before removing from bed we should try out the Cadillac bonded rubber damper which By/Ald.{F. Allwood - Experimental Design} is adapting to B.80. B.60 NO.1 UNIT (Chain driven camshaft). As soon as ready this unit to be fitted on the universal bed when B.80 No.2 is removed. With the best type of damper found on B.80, this should be tuned to suit B.60 unit. Check for crank periods and chain periods and noise throughout speed range. If no apparent trouble, then endurance will be specified in the next memo. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||