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 Unit Phan.II-19 (Chassis 23-EX), detailing modifications to engine components.
| Identifier | ExFiles\Box 169\1\ img033 | |
| Date | 26th March 1930 | |
| 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}/MS26.3.30. Unit Phan.II-19 (Chassis 23-EX). Specification of above Unit issued in RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}/MS25.2.30. is revised as follows:- Passed to Test 24..3.30. Crankcase & Bearings to L.O.P. E.78560. Crankcase modified by adding Oil Grooves on Cylinder Joint Face to Nos.3,4,5 & 6, bores for extra Cylinder Lubrication in offset position as shewn on Drg:E.79847. Crankshaft to LeC 2736. New Crankshaft E.79675 Nitro-alloy. (2.375 dia: Crankpins) for Low Inertia Spring Drive. Connecting Rods to LeC 2729/30/36. Con. Rods & Caps E.80596/7 to suit larger diameter Crankpins and Invar Strut Pistons (Pistons to be fitted later). Cylinders to L.O.P. E.78949. (1) Cylinders modified for .850 offset feed for extra Cylinder Lubrication. (2) Feed Pipe E.80194 in I/M.{Mr Moon / Mr Moore} (3) Cylinder Head Hot Spot port modified to drg: E.80312. Extra Cylinder Lubrication to L.O.P. E.80088. Larger diameter Oil Feed Pipes to arrgt: E.80333. contd. | ||