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.M. Chassis 25-EX), detailing modifications to the clutch and flywheel.
| Identifier | ExFiles\Box 169\1\ img144 | |
| Date | 3rd 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}/WSC{W. S. Cassel}6/IS.3.2.31. ENGINE UNIT NO 21. (L.M.CHASSIS 25-EX). Specification of the above Engine issued in RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}1/MSM.10.30. is revised as follows:- PASSED TO TEST 30.1.31. Flywheel & Clutch to IO.G.78478. Clutch Cover & Friction Plate - Removed- replaced by Solid Drive to Ex.5811. RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} | ||