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).
List of modifications and updates for various engine units including W.R.No.1, W.R.No.12, and 4 Cylinder Units.
| Identifier | ExFiles\Box 161a\3\ scan0143 | |
| Date | 27th April 1939 | |
| -8- HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}10/BA.27.4.39. W.R.No.1. contd. (b) EB.4410 Crankshaft damper. (c) EW.2170 Pistons - Aerolite to SCD.1269. (d) EW.2179 Cylinder Block with EW.2180 Liners. (e) Strengthened Exhaust Valves to FD.{Frank Dodd - Bodies}403 Motor Component produced inlet valves. (f) EX.S.768 Camshaft, incorporating SCD.663. (g) Oil Filter to SCD.1038. Otherwise the engine is practically Wraith III type. AG. to carefully "weigh up" the position with a view of arriving at a completion date which should be given at the next meeting. W.R.No12 Late B.V.No.6 converted into Wraith Ripple type by fitting the following, (a) EW.2177 Cylinder Block produced in Nickel Chrome Molybdenum. (b) EW.2170 Pistons - Aerolite. (c) Otherwise to specification issued in HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}1/BA.19.4.39.. AG. to carefully "weigh up" with a view of giving a completion date at the next meeting and it was requested by Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} that the Cylinder Block should be given first urgency as it is desirous to get this unit on test as soon as possible. 4 Cylinder Units. To produce this unit we shall convert one of our B.60.Units. All the details we have received at present are the Crankshaft EB.4843 and the Camshaft ME.4033. The Crankshaft is being produced outside completely machined and the Camshafts are instructed under code BC.15/2. Will Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} please let us have the spec for this unit. continued. | ||