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).
Status report on Wraith III and Wraith Ripple engine units, detailing testing, development, and component specifications.
| Identifier | ExFiles\Box 161a\1\ scan0011 | |
| Date | 12th July 1939 | |
| - 8 - HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}10/BA.12.7.39. WRAITH III UNITS. No.1 On test for general development. No.4 On test for general development. No.5.Fitted in 28.G.VI. No.6.Fitted in 27.G.VI. No.8.Fitted in 25.G.VI - Rm{William Robotham - Chief Engineer}'s car. No.10.Fitted in 14.B.V. for 15,000 miles trials Continental Chassis. WRAITH RIPPLE UNITS. W.R.No.1. New Unit instructed in HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}6/BA.14.4.39. 3.250 dia bore - The main items being, a.{Mr Adams} Crankcase T.H. in L.5. alloy. b. Crankcase L.H. standard. c. Standard V.C.M.Crankshaft. d.{John DeLooze - Company Secretary} EW.2170 Pistons - Aerolite. e.{Mr Elliott - Chief Engineer} EW.2179 Cylinder Block. f.{Mr Friese} EW.2180 Cylinder Liner. g.{Mr Griffiths - Chief Accountant / Mr Gnapp} Ex.S.1768 Camshaft. h.{Arthur M. Hanbury - Head Complaints} EB.4845 Exhaust Valves to FD.{Frank Dodd - Bodies}403. i. SCD.1038 Oil Filter - Ex.S.1259 Assy. j.{Mr Johnson W.M.} Flywheel GB.4758 . Anticipate passing to test by July 25th. W.R.No.2. On test allocated to 12.B.V. for 15,000 miles trials. W.R.No.3. On test allocated to W.R.No.1 Chassis. 4 Cylinder Unit. This new unit is being produced by converting one | ||