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).
Outlining a development programme for cylinder bore wear testing on various engine units.
| Identifier | ExFiles\Box 132\5\ scan0044 | |
| Date | 21th February 1939 | |
| HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} Rm{William Robotham - Chief Engineer}/CTS{C. Trot Salt - Carburation}3/R.21.2.39. CYLINDER BORE WEAR. Further to our memo Rm{William Robotham - Chief Engineer}/CTS{C. Trot Salt - Carburation}9/JH.18.1.39., we have laid out a programme herewith, showing the various combinations of cylinder materials and pistons to be incorporated in engines, in line with our development programme. B.V. No. 4 Unit. (Chassis 9.B.V.) (10,000 Miles' Test.) Short cylinder inserts to be fitted as follows:- Cyls. Nos.1 & 2. Brivadium ) Brico (to be supplied). " " 3 & 4. Hichrome ) " " 5 & 6. Ph. Chrome - R.R. (to be produced) Pistons: EW.2121. (Raised crown split skirt). B.60 No.4 Unit. (Chassis 3.B.50) 10,000 Miles' Test). Short Cylinder inserts to be fitted as follows:- Cyl. Nos. 1 & 2. Standard bores (No. insert) " " 3 & 4 Hichrome (Brico) " " 5 & 6 Ph. Chrome (R.R.) Pistons: " Nos. 1, 3 & 5 EW.1967. " 2, 4 & 6 EB.3916. Wraith No. 8 Unit.(Chassis 25.G.VI). Conditions exactly as 3.B.50, except that pistons to have raised crowns. Nos. 1, 3 & 5 EW.2121 (RR) " 2, 4 & 6 EB.4587 (Aerolite). | ||