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, detailing changes to the engine coupling.
| Identifier | ExFiles\Box 169\1\ img154 | |
| Date | 9th March 1931 | |
| To Hs.{Lord Ernest Hives - Chair} from RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} 24663 RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}10/LS.9.3.31. ENGINE UNIT NO.21. (L.H.CHASSIS 25-EX). Specification of the above Unit issued in RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}3/MS11.7.30. is revised as follows:- PASSED TO TE.T 7.3.31 Previous Specification. Engine Coupling to LOP. G.77903. Hardy Fabric Coupling G.L.391 - Removed. Revised Specification. Engine Coupling. Solid Coupling to Drg: G.5875, incorporating White Metalled Bearing for Clutch Shaft to Drg's EX.5876-7-8&9. RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} | ||