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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).
Specification revision for Engine Unit No. 25 (Chassis 24-EX), detailing crankshaft modifications.

Identifier  ExFiles\Box 169\1\  img101
Date  10th December 1930
  
To Hs. {Lord Ernest Hives - Chair} from RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel}

RHC {R. H. Coverley - Production Engineer} /WSC {W. S. Cassel} 1/LS.10.12.30.

ENGINE UNIT No.25 (CHASSIS 24-EX).

Specification of the above Unit issued in RHC {R. H. Coverley - Production Engineer} /WSC {W. S. Cassel} 1/MS21.6.30. is revised as follows:-

PASSED TO TEST 4.12.30.

Previous Specification. | Revised Specification.
---|---
Crankshaft to LOP. E.79739. | Crankshaft to LHP.LoC.2616.
Crankshaft E.79738 Removed. | Crankshaft E.78456 Modified to Drg: E.78648 & EX.3611 to suit Balance-Weights EX.3609 using Studs EX.3610 and Oil Caps E.78441. Front-End of Crankshaft to Drg: E.79738 to suit Low-Inertia Spring Drive.
  
  


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