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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).
Experiment on a gearbox with original unlapped first motion shaft bearings.

Identifier  ExFiles\Box 94\1\  scan0371
Date  23th December 1936
  
328

To Mx.{John H Maddocks - Chief Proving Officer} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}

Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}12/AP.23.12.36.

P.3. GEARBOX

Confirming our conversation yesterday, we hope that you will be able to obtain the gearbox with the original unlapped first motion shaft bearings, which proved to be noisy on test and then let us have this box to ease the fit of the bearings on the shafts and in their housings.

We regard this as an important experiment, as we hope thereby to save the cost of lapping all the bearings.

Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}
  
  


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