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).
The unsuccessful trial of stiffer, double-taper push rods in a Phantom II valve gear.

Identifier  ExFiles\Box 17\6\  Scan287
Date  24th July 1934
  
X7060
To E/PSN.
c. to By.{R.W. Bailey - Chief Engineer}
Hs{Lord Ernest Hives - Chair}/Smth. S/KW. 24. 7. 34.

Phantom II Valve Gear.

We have tried a set of double taper steel tubular push rods in Ph. II, but did not succeed in raising the valve bounce speed thereby.

These push rods were 2 1/2 times as stiff as the present standard, and in view of this we do not think that any useful purpose could be served by proceeding with LeC.3938.

Hs{Lord Ernest Hives - Chair}/F.Ll. Smith.
  
  


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