Rolls-Royce Archives
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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).
Secret memo discussing the simplification of the servo and differential linkage by making the countershaft solid.

Identifier  ExFiles\Box 73\1\  scan0188
Date  21th June 1924
  
X9910
To Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} SECRET. DA{Bernard Day - Chassis Design}5/M21.E.24.

E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. X.9910
X.9941.

Referring to your Hs{Lord Ernest Hives - Chair}5/LG18.6.24., it is quite true that the trip on the countershaft might be dispensed with. It provides a safeguard in case the servo lever should seize or become stiff, but it is very unlikely that this would happen. Could you experimentally fit up a car with this shaft made solid? It would enable the scheme to be rather simplified as a single lever can be used for the rod to the servo, and the rod to the differential, giving us a little more room which we are very glad of.

DA.{Bernard Day - Chassis Design}
  
  


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