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 revision for Engine Unit No.21 (L.H. Chassis 25-EX), detailing changes to the flywheel and clutch assembly.
| Identifier | ExFiles\Box 169\1\ img147 | |
| Date | 4th February 1931 | |
| To Hs.{Lord Ernest Hives - Chair} from RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} RHC{R. H. Coverley - Production Engineer}/WSCB/IS.4.2.31. ENGINE UNIT NO.21. (L.H.CHASSIS 25-EX.) Specification of the above Unit issued in RHC{R. H. Coverley - Production Engineer}/WSCB/IS.3.2.31. is revised as follows:- PASSED TO TEST 11.1.31. Previous Specification. Flywheel & Clutch to LOP. G.78478. Solid Drive to Ex.5811.- Removed. Revised Specification. Flywheel & Clutch to LOP. G.78478. Alum Flywheel Cover and Alum Pressure Ring to Drg:Ex.5816- fitted. RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} | ||