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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).
Complaint of engine boiling on a Bentley, caused by solder jamming the water pump rotor.

Identifier  ExFiles\Box 130\2\  scan0344
Date  10th December 1936
  
1113

Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}

Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}3/R.10.12.36.

Complaint of Boiling.

A complaint of boiling on a 4 1/4-litre Bentley came into Kingsbury. This was traced to solder having jammed the rotor of the pump, and in this case, the jam was sufficient to strip the thread in the rotor.

We have now had cases on P.III, 25/30 and Bentley.

Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} [Signature]

[Handwritten note top right]
Hdei
Ruf/SM

[Handwritten note bottom]
Steadman
This is the third case. Do the americans use any sort of strainer on the suction side of the pump? Have we any suggestions? [initials]
  
  


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