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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).
Letter from Ruston & Hornsby Ltd. to Wellworthy Piston Rings Ltd. with crankshaft material and lubrication specifications.

Identifier  ExFiles\Box 116\1\  scan0074
Date  8th November 1938
  
COPY OF LETTER RECEIVED FROM -

RUSTON & HORNSBY LTD.

LINCOLN.

T/JPS/JS.{Mr Johnson's Secretary}

K/WM/S/FN.B.16055

8th November, 1938.

Messrs. Wellworthy Piston Rings Ltd.,
Lymington,
Hants.

Dear Sirs,

With reference to your letter of the 31st ultimo re enquiry T.366, the points raised are dealt with as follows -

1 and 2
Herewith a print of drawing 4VRO.235A showing the crankshaft, except that the material will be .45 carbon steel, normalised, bearing portions hardened to give a Brinell figure of not less than 500, diameter limits -1/2 -1.

3
Pressure lubrication is used at a working pressure of 15/20 lbs. sq. inch.

Yours faithfully,
RUSTON AND HORNSBY LTD.

(Signed) A.Hall

Head Buyer.

[Stamped text, partially illegible: RECEIVED]
  
  


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