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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).
Friction clutch issues in 45HP & 25HP cars, focusing on gear change difficulty and a proposed material change for the American market.

Identifier  WestWitteringFiles\U\2January1930-September1930\  Scan207
Date  10th July 1930
  
HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce}

C. to SG.{Arthur F. Sidgreaves - MD} BY.{R.W. Bailey - Chief Engineer}
C. to DA.{Bernard Day - Chassis Design}

45HP. & 25HP. CARS.
FRICTION CLUTCHES.

x7772
x7480
x5480

I have agreed to the fabric being carried on the disc, but I am not sure that we have the driven disc sufficiently light so as to avoid any increased difficulty of changing gear.

Both the L.H. cars, namely, the American made one, and the 1st. English one, seemed rather difficult to change gear.

I understand in connection with this alteration that we are using cast iron for the surface rubbing the fabric. Ought we to bring the 25HP. in line as soon as ever possible, this being one of the changes necessary for the American market.

R.{Sir Henry Royce}
  
  


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