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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).
Engineering query and decision log regarding various chassis components.

Identifier  ExFiles\Box 72\4\  scan0116
Date  31th October 1923
  
-2-
Chassis. Description. Decision to be made by

Cylinder contd.
Shall we add monogram R.R. to Rocker Cover and Water Jacket Covers? By and Hs.{Lord Ernest Hives - Chair}
Are wedges fitted on parallel tubes? Exptl:Dept:

Valves & Fittings.
Tangent Screw Valve Rocker Adj: not instructed. Exptl:Dept:
Shape of Valve Head - E.70319 "Tulip" instructed. Umbrella E.70818 and Flat Head E.71163 being tried. Exptl:Dept:
Is Valve Assembly tool E.71256/7 suitable? Exptl:Dept:

Induction Pipes.
Alter petrol drain washers from fibre to alum: as suggested by Exptl:Dept: "E" D.O.
Autovac Connection on Inlet Pipe or part of starter Carb:Body. West WitteringHenry Royce's home town.
Are the alum:washers under pinned exhaust connection on the jacketted bend satisfactory? We asked Exptl:Dept:under By/Shn1/DB.{Donald Bastow - Suspensions}31.10.23.

Carburetter.
We have issued experimentally the following types:-
(a) Moving choke.
(b) Fixed choke.
(c) "Knave" 40/50 two jet. Mr Bailey.
Shall we instruct up the one in hand to LeC.1809/10. Two jet on lines of 20 HP.
We require particulars of starter Carb:Connections on Float Chamber. West WitteringHenry Royce's home town.

Camshaft.
Have final check on drgs: which have been changed about so much. "E" D.O.
Are designed cam centres satisfactory? Exptl:Dept:

(Faint upside-down text at bottom right)
R.R. 53 (50 T) (S.D. 408. 26-4-17) Bm. 2/156/14.
  
  


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