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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).
Request to issue a detail drawing for a 20/25 HP Crankshaft with a list of required modifications.

Identifier  ExFiles\Box 103\3\  scan0095
Date  9th September 1931
  
E.{Mr Elliott - Chief Engineer} Dept. Y5010
PHO
H.S.
BY/SS{S. Smith}10/J.S.9.31.

20/25 H.P. Crankshaft.

To confirm the verbal request of the Experimental Dept. will you please issue a Crankshaft detail drawing in accordance with the following:-

1/- 2.000 dia. Crankpins.
2/- Flanged end for Stiffer Flywheel.
3/- The front end to be machined as shewn on E.51106, so that separate extension pieces may be fitted to carry either the present standard spring drive or the low inertia Type. Extension piece E.51107 can be used for the standard Spring Drive and a new part instructed for the Low Inertia Type.

It is agreed to get the shaft moving; a marked up print of E.55619 is issued at once followed as soon as possible by the new Extension Piece.

BY/SS.{S. Smith}
  
  


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