Rolls-Royce Archives
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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).
Letter from the Chief Engineer discussing suspension arrangements and the superiority of new rubber shackles.

Identifier  ExFiles\Box 28\1\  Scan017
Date  8th April 1922
  
Branch Letter #245 (3 sheets) - 2 -

8/4/22

arrangement; however, it requires besides the extra springs and accompanying parts, the use of two more pins and bushings than are commonly used in the shackle construction.

Sketch "F" shows a trussing arrangement using springs to take care of the very light frame, which is eventually made to weave.

................

In conclusion, I think it is fair to say that our new rubber shackles with their few parts and easy assembling are much superior to these rather complex mechanical arrangements with many bearing points, bushings and parts which require constant lubrication.

Our rubber shock insulator is a new and novel arrangement between the sprung and unsprung load, the rubber "jellying" and thus doing the work that the spring cannot do - helping to give a smooth, continuous motion to the vehicle - allowing the unsprung weight to hop along the road without disturbing the general motion of the load carrying member of the vehicle.

Very truly yours,

A.{Mr Adams} H.{Arthur M. Hanbury - Head Complaints} Masury

Chief Engineer.

AFM{Anthony F. Martindale}/R-T
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