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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).
Use of full depth nuts instead of lock nuts for bolts on a P 2 BM 2nd Gearbox.

Identifier  ExFiles\Box 15\5\  Scan411
Date  9th November 1934
  
x7310

To BY.{R.W. Bailey - Chief Engineer}
Copy to Mr. E.{Mr Elliott - Chief Engineer}
Hs.{Lord Ernest Hives - Chair} Ws.
EWST

HDY.{William Hardy}3/MN.9/11/34.

[Signature] R H GRY{Shadwell Grylls}

P 2 BM 2nd. Gearbox.

With regard to the bolts which hold the selector rod plunger housing to the diaphragm of the box we believe that we have seen lock nuts used on these.

Our drawings do not appear to show the depth of the nut intended but in any case if they are found to be lock nuts would you kindly instruct full depth nuts unless there is any reason why this cannot be done, in which case we should like to be informed.

HDY.{William Hardy}
  
  


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