Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Technical memo discussing a discrepancy in load measurements on an EAC.7 servo linkage, complete with a diagram.

Identifier  ExFiles\Box 16\3\  Scan012
Date  21th March 1927
  
To DA.{Bernard Day - Chassis Design} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}
X7370
Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG21.3.27.
FRICTION OF EAC.7. SERVO LINKAGE.
X7370
X7420
With reference to DA{Bernard Day - Chassis Design}2/M17.3.27. We believe that your query is due to the peculiar method in which the Works take the load on the swinging link. A bolt is placed in the top of the 'T' lever and the pull is taken at the bottom of this lever, the result being that the 26 lbs. load has to be obtained at the radius x and not at the radius of the swinging link. We cannot get more than 14 to 16 lbs. when the pull is taken in this manner.
Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙