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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).
Instruction to fit ECD.895 drain pipes and a ball valve to Wraith III Units No.6 and No.10.

Identifier  ExFiles\Box 7\4\  X 608 Carburetter-page47
Date  18th November 1938
  
L08

To HPS{Horace Percy Smith - Experimental Factory Mgr}/WSS.

Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe}12/JH.18.11.38.

WRAITH III Units No.6 and No.10.

Will you please fit ECD.895 drain pipes and
ball valve to the above units.

The alteration to the induction manifold may
be deleted providing the nut and nipple will suit the
existing valve body minus the ball.

Will you kindly note that all future units
should be brought up to date in a similar manner.

Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe}
  
  


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