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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).
Casting of water jackets and the potential deletion of tie-bars for certain models.

Identifier  ExFiles\Box 132\4\  scan0169
Date  1st September 1938
  
- 2 - DA.{Bernard Day - Chassis Design}1/G.1.9.38.

Since then, however, the foundry have reverted to the one-piece core for the water jacket, which means that loose core pieces are necessary to form the tie-bars in the casting.

To date no value has been assessed for these tie bars regarding barrel distortion, but as they were never adopted on the 25/30 HP. and Bentley 11 cars, it would appear that we might manage without them on the Wraith 111, although this will need confirming by Experimental Department before deleting them from the production castings.

Will you therefore please instruct the necessary parts for these alterations experimentally as soon as possible.



DA.{Bernard Day - Chassis Design}
  
  


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