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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).
Note about substituting induction manifolds for weight reduction, referencing specific negative numbers, and a clarification on Phantom III brake drums.

Identifier  ExFiles\Box 160\5\  scan0342
Date  28th August 1941 guessed
  
MANIFOLDS

The induction system illustrated in Negative No 5529c and numbered 1.2.3 should be substituted for those numbered 1.2.3.4.5.&6 in the negative numbered 5509c a saving on the total unit weight of 15lbs 12ozs. reducing the section weight to 49lbs 9 3/4 ozs and the aluminium weight of this section to app 16 1/2 lbs.

Phantom III did not have aluminum brake drums on production.

Rm{William Robotham - Chief Engineer}/Hallam
  
  


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