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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).
Inspection points and adjustments for a carburetter due to a spindle failure.

Identifier  ExFiles\Box 108\1\  scan0125
Date  27th August 1937
  
To Rm{William Robotham - Chief Engineer}/IMW{Ivan M. Waller - Head of Chateauroux} (Chateauroux)
from Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe}

600a
Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe}16/AP.27.8.37

26.G.Vl.{V. Lewis / Mr Valentine} - 30.HP.

Ref. Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux}10/JAB.24.8.37

Will you please check the following points -

(1) Remove all external enamel from the carburetter top where the clamp registers.

(2) Check top of carburetter for concentricity.

(3) Check alignment of air intake bend between carburetter and air silencer.

(4) Increase diameter clearance of choke valve spindle in end bearings if necessary.

The failure is probably due to the spindle having been bent at the control end, while in the full open position, with a very loose engine mounting, as in this direction the control is positive.

It may be necessary to have clearance in the fully open position i.e. the choke valve approx. 1/8" off the stop.

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


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