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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).
Borg & Beck clutch experiment on a 25HP model, with reference to alternative design schemes.

Identifier  ExFiles\Box 179b\1\  img021
Date  23th August 1932
  
BY.{R.W. Bailey - Chief Engineer} ) FROM DA.{Bernard Day - Chassis Design}
HS.{Lord Ernest Hives - Chair} )

C. to SG.{Arthur F. Sidgreaves - MD} WOH EY

DA{Bernard Day - Chassis Design}1/H23.8.32.

BORG & BECK CLUTCH EXPERIMENT ON 25HP.

We hope this experiment is being pushed on, as information obtained from it would be of assistance in determining the modifications to our own clutches.

We send herewith N. sch. 3524. shewing the leverage between the clutch operating shaft and the pedal.

We understand that EY. is in communication with Borg & Beck directly, and they have sent him a drawing shewing a suggested method of arranging the ball thrust by mounting it on a sleeve on the gearbox nose. We think this method would be satisfactory, but that some of the details on the B. & B. scheme are not entirely suitable, and we send herewith N. sch. 3515. shewing how we think it could be better arranged.

DA.{Bernard Day - Chassis Design}
  
  


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