Rolls-Royce Archives
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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).
The performance of the Phantom, focusing on HP curve and brake efficiency compared to other models.

Identifier  ExFiles\Box 29\3\  Scan153
Date  30th November 1925
  
R.R. 493a (50 H) (D.D. 31. 12-6-25) J.H.D.

EXPERIMENTAL REPORT. -4- Expl. No. REF:Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}/LG30.11.25.

The standard Phantom is represented by a car with a H.P. curve which is a little below the average however.

Graphs 1V. and V.{VIENNA}

We consider that the brakes on 10-EX are very good average Phantom brakes. Those on 98-NK (the car previously tested) were rather too efficient, the steering was liable to take charge.

Graph V.{VIENNA} once again emphasizes the selective application which can be produced with the RR. servo motor and the consistent results consequently obtained.

Hs{Lord Ernest Hives - Chair}/W.A.Robotham.
  
  


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