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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).
Comparison of alleged and actual performance curves for a Lagonda vehicle.

Identifier  ExFiles\Box 128\3\  scan0097
Date  20th May 1940
  
Rm{William Robotham - Chief Engineer}/TAS.{T. Allan Swinden} from Rm.{William Robotham - Chief Engineer}

c. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager}
c. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}

11074

Rm.{William Robotham - Chief Engineer}10/ML.20.5.40.

Here is an alleged B.H.P. curve of the Lagonda we tried the other day.

When you have made your comparison on a ton/miles per c.c. basis, compare with the actual, measured acceleration figures; you should then be able to complete a B.M.E.P. curve which represents what was actually obtained on the car we tried and it would be interesting to see how it compares with the curve I am sending you herewith.

Rm.{William Robotham - Chief Engineer}

Will you please return the attached details when you have finished with them.
  
  


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