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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 to London, Midland & Scottish Railways Ltd. concerning a design discrepancy in a 40mm gun mounting.

Identifier  ExFiles\Box 175\3\  img192
Date  30th September 1940
  
COPY.

3

Rm.{William Robotham - Chief Engineer}2/ML. 30.9.40.

- Ivatt,Esq.,
London, Midland & Scottish Railways Ltd.,
DERBY.

Dear Sir,

MOUNTINGS - 40 mm. GUN.

Tests were carried out on the pedestal
type mounting, by the Admiralty yesterday. They criticized
the horizontal parking stop. This was not sufficiently
rigid.

On looking into the matter, we found
that the detail of this stop did not correspond with
our design, and this appears to us to be the cause of
the criticism.

While we are anxious to co-operate with
you and take advantage of your experience, we feel that
in the future no departure should be made from our designs
until such modifications have been submitted to us for
our approval.

Yours faithfully,

for ROLLS ROYCE LTD.,
  
  


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