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Temporary modifications for the 'EXE' engine's ignition system to house a larger ballast resistance.


Identifier  ExFiles\Box 61b\2\  scan0327
Date  4th April 1936
  
RHG.
C. R. {Sir Henry Royce}
C. R {Sir Henry Royce} /FSB.
C. G {Mr Griffiths - Chief Accountant / Mr Gnapp} /Bb.
c. Hs {Lord Ernest Hives - Chair} /Wd. {Mr Wood / Mr Whitehead}
c. Hs {Lord Ernest Hives - Chair} /Wst.

16119.

BY {R.W. Bailey - Chief Engineer} /RDS/W.4.4.36.

"EXE(Aero Engine)" ENGINE.

Ignition Distributor and Coil.
DC.120.

In order to house a larger ballast resistance,and provide this resistance,we send you herewith blue prints of :-

D.6803. Cover,Coil Case. 4 off.
This is a modification to the moulding D.5527.

D.6804. Washer. 4 off.

D.6805. Wire,Ballast Resis. 4 off.
Hs {Lord Ernest Hives - Chair} /Wst.has a supply of 22 SWG.resistance wire suitable for making up this latter item.

Will you please put in hand as required.

This is a temporary expedient only,until the final design of larger resistance DC.220,is available.

BY {R.W. Bailey - Chief Engineer} /RD.
  
  
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).


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