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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).
Procedure for dynamometer testing, suggesting a lower torque run in first gear to prevent damage.

Identifier  ExFiles\Box 133\4\  scan0346
Date  10th June 1932
  
X 384 . 1004

To Mx.{John H Maddocks - Chief Proving Officer} from Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}

Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}9/KT.10.6.32.

P.II. DYNAMOMETER.

We can see no useful purpose in running full torque on 1st gear. We suggest that the 10 mins. run on 1st gear should be run under 25 HP. conditions, that is at the same load as was registered on 2nd gear. We think you will agree that full torque running on a car, particularly those fitted with low rating springs, will merely be detrimental to the car.

Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}
  
  


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