Rolls-Royce Archives
         « Prev  Box Series  Next »        

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
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙