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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).
Rattling exhaust system on the modern 25 HP car due to the silencer fouling a frame cross member.

Identifier  ExFiles\Box 104\2\  scan0223
Date  12th June 1936
  
HS.{Lord Ernest Hives - Chair} WYMAN
N-W
X523
Do we know of this foul. Has anything been done to rectify it on Production? Pm

re Technical - Modern 25 H.P. Exhaust System
-------------------------------------------------
With reference to our Br4/S15.5.36 regarding the rattle beneath the more modern 25 H.P. cars which we have traced to the rear silencer fouling the cross member of the frame, we shall be glad to hear if there have been any developments in this matter.

Rm{William Robotham - Chief Engineer}
Br/M.{Mr Moon / Mr Moore}
This has been put up to design as per our Hs{Lord Ernest Hives - Chair}/WYM{G. Harold Whyman - Experimental Manager} II/KW 10-6-36
Goodhyman
  
  


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