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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).
Timeline for modified springs for car 58-GN and the results of speed tests at Brooklands.

Identifier  ExFiles\Box 18\3\  Scan174
Date  18th October 1930
  
To Sg.{Arthur F. Sidgreaves - MD} From Hs.{Lord Ernest Hives - Chair}
c. to Wor.{Arthur Wormald - General Works Manager}

7960.

Hs.{Lord Ernest Hives - Chair}5/MJ.18.10.30.

58-GN. Springing.

X. 7960.
X. 7410.

Replying to Sg{Arthur F. Sidgreaves - MD}23/Æ15.10.30.

We anticipate that it will be about 14 days before we have the modified springs to fit to 58-GN. car.

Results of the tests on Brooklands shew that the loss of maximum speed is less than one mile per hour with the air silencer fitted, which means the car lapped at 81 instead of 82. A complete report on this is being issued.

Hs.{Lord Ernest Hives - Chair}
  
  


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