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).
Suspension deflection and a comparative analysis of Packard's engines, suspension, and testing standards.

Identifier  ExFiles\Box 173\1\  img412
Date  6th February 1934 guessed
  
III

Cars with 9" deflection seem just about - as uncontrollable as the standard Car with 4 1/2" deflection, both being arranged to give the optimum boulevard ride. We shall certainly require ride control to get high speed cornering & stability.

Packards. I was very impressed with Packards, as previously mentioned I consider their engine to be the smoothest & most silent 12 cyl I have tried (160 B.H.P. 445 cu ins dish), their suspension as good as any conventional and their gearbox remarkably silent. I also drove their light eight / 320 cu ins which is quite a nice automobile, refined and well sprung at about £500. It is not as well silenced intake & exhaust as the Buick.
Packards are playing a lone hand doing little or no aircraft work at present nor are they in any way mass producing. Their testing is most thorough, their standard for a major alteration being 50,000 miles. They have just completed a 10,000 miles run on the 12 cyl continuous full throttle full speed without trouble.
  
  


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