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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).
Clarifying a rusting silencer was made of mild steel, not 'Staybrite', and discussing ongoing trials with 'Staybrite' material.

Identifier  ExFiles\Box 154a\1\  scan0054
Date  30th June 1926
  
Hs {Lord Ernest Hives - Chair}
R. {Sir Henry Royce}
c. Hs. {Lord Ernest Hives - Chair}

X4111

BYll/H. 30.6.26.

RECEIVED 1 JUL 1926

SILENCER SUPPOSED TO HAVE BEEN MADE IN "STAYBRITE".
---------------------------------------------

Referring to your memo in which you pointed out that the silencer supposed to have been made in "Staybrite" was showing very serious signs of rusting, will you kindly note that the information in regard to the silencer was incorrect, as it was made in our standard mild steel material.

At the moment we are trying out:-

a {Mr Adams} /- Staybrite Downtake pipes from the cast exhaust manifold on the engine to the main pipe running to the silencer, the pipes in question being lagged with asbestos cord, with the object of eliminating the flaking away of the pipe and consequent early failure.

b/- We are trying a "Staybrite" lagging sheet round the front silencer in place of the aluminium, and at the same time propose to try "Staybrite" bands for securing same.
At the moment these are protected by Sherardizing.

Apparently a misunderstanding has arisen in this matter, and the use of "Staybrite" for the front silencer lagging has been confused with the proposal to try a rear silencer made in "Staybrite", an idea which I have certainly had in view, and had as a matter of fact made tentative enquiries in regard to what could be done with "Staybrite", both as regards using a longitudinal folded joint or a longitudinal welded joint, but at present the Chesterfield Tube Company who have most experience of "Staybrite", have turned down the proposals as beyond their present experience.

One other point in regard to "Staybrite" is, that it is not necessary for it to be heat-treated and polished in order to get its resistant properties to corrosion at a maximum. The material in question, when merely descaled by pickling, is absolutely non-corrosive, and cannot be made any better, so far as its resistance to corrosion is concerned, than such condition represents, although of course by polishing same a more homogeneous appearance can be obtained.

BY. {R.W. Bailey - Chief Engineer}
  
  


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