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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).
Modifications to a 20-HP clutch for a 10,000 miles car, including reduced pedal pressure.

Identifier  ExFiles\Box 5a\4\  04-page013
Date  26th January 1934
  
GRY{Shadwell Grylls} X58740

To BY: from Da.{Bernard Day - Chassis Design}

Da.{Bernard Day - Chassis Design}1/HP.26.1.34.

c. For. Mr. Hs.{Lord Ernest Hives - Chair} Nov. 1918. [strikethrough]

20-HP. Clutch - 10,000 Miles Car.
---------------------------

Herewith is N. Sch.3948, clutch for above car.

The pedal pressure has been reduced from approximately 43 lbs to 33 lbs.

The pressure per square inch has been reduced from approximately 37 lbs per square inch to 26 lbs.sq.inch.

The inertia of the driven member is about the same as now.

The inertia of the flywheel is the same as the present Bentley, and it is suggested that this should be used on the 20/25.

Da.{Bernard Day - Chassis Design}
  
  


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