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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).
Correspondence from Wellworthy Piston Rings Ltd. regarding difficulties with the AC.6 bearing and an oil groove.

Identifier  ExFiles\Box 115\5\  scan0044
Date  31th May 1938 guessed
  
1.

Agents Copy

of bearing, and it is therefore our intention to drop the AC.6. which presents certain difficulties in production, mainly from a casting point of view.

The one point outstanding, therefore, is the question of the oil groove on which subject you are going to let us know whether you will be able to mill this groove at your end or whether we shall have to make provision to do so here.

Yours faithfully,
For WELLWORTHY PISTON RINGS LTD.,

Technical Manager.
  
  


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