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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).
Design changes for the 25-30 Radiator, focusing on weight and cost reduction.

Identifier  ExFiles\Box 105\1\  scan0243
Date  31th January 1936
  
x540

RR.

C.RHGs Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}

E/JNR.{Charles L. Jenner}1/HP.31.1.36.

25-30 Radiator.

Please receive herewith:-

Lec.4967 showing the design of the radiator with a 58 m/m Mark 5 matrix and fitted with unbalanced shutters of the wrapped over shape.

The width of the radiator is made 4" instead of 4.550" to save weight.

Sheet metal sideplates are used to reduce the cost.

The back of the radiator is the same shape as at present to suit the existing bonnet.

There will be no alteration with this scheme to the radiator mounting brackets, the water outlet pipe, the filler, or the calorstat, but the links between the calorstat and the shutters will be shorter.

E/JNR.{Charles L. Jenner}
  
  


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