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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).
Epicyclic 3rd speed gear, requesting a new clutch spring and alteration of clutch clearance.

Identifier  ExFiles\Box 15\5\  Scan098
Date  21th September 1929
  
X 7310

Ry. from Da.{Bernard Day - Chassis Design}
c. Sg.{Arthur F. Sidgreaves - MD} Hs.{Lord Ernest Hives - Chair}

Da{Bernard Day - Chassis Design}2/M21.9.29.

EPICYCLIC 3rd. SPEED GEAR
X.7640
X.523
X.7310

We send herewith N. sch. 2949, a diagram of the forces in the controls, which we think will be self explanatory.

It will be noted that we are asking for a new epicyclic clutch spring, and have altered the clearance of the clutch by reducing the thickness of the plates to allow the clutch control lever to be halfway between the extreme positions.

Da.{Bernard Day - Chassis Design}
  
  


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