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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).
Implementation of flexible springs with adjustable shock dampers, considering cost and alternative designs.

Identifier  ExFiles\Box 106\1\  scan0291
Date  26th September 1931
  
X5410

HS.{Lord Ernest Hives - Chair}) FROM R.{Sir Henry Royce}
BY.{R.W. Bailey - Chief Engineer})

C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} DA.{Bernard Day - Chassis Design}

R2/M26.9.31.

SHOCK DAMPERS AND ROAD SPRINGS.

X.235
X.7410.
X.5410.

It seems absolutely imperative that we must use flexible springs on the bulk of our car work, and these can be made satisfactory even for ordinary high speed work by sufficiently effective shock dampers. The maximum effectiveness of these can be approximately double that of our practice in the past. The normal must only give our standards of the past year.

We agree that it is imperative under the above circumstances to provide at least two adjustable settings for the dampers, what we may call the maximum and the normal.

HS.{Lord Ernest Hives - Chair} feared the cost of the sylphon tube in conjunction with the control of these dampers. Although these ought to be available at a cost not exceeding 5/- each we believe that some other scheme can be arranged that will be equally effective. Some of the ideas that have occurred to us appear to promise well, and we think it is quite within the bounds of possibility to combine the control with a replenishing system so that a small oil pipe going round the chassis will be able to do the double duty. -XXX The way in which this should be carried out I will send later. It may be arranged to control two pressure valves or a two grade leak, or both. This latter I think will be found preferable.

R.{Sir Henry Royce}
  
  


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