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).
Dynamometer test results for a Waltham speedometer fitted to a 49-GB car with a 15/52 axle.

Identifier  ExFiles\Box 36\1\  scan 084
Date  20th October 1922
  
Mr. Hives from GWH.{George W. Hancock - Head Chateauroux}

X2915

20.10.22.

WALTHAM SPEEDOMETER FITTED TO 49-GB CAR.
15/52 Axle.

Checked over on dynamometer.

Correct M.P.H. | Engine revs. | Speedometer.
10 | 355.6 | 7
20 | 711.3 | 17.5
30 | 1067. | 30
40 | 1422.6 | 47
50 | 1778.3 | 63
60 | 2134 | 73
70 | 2487 | 80

33 X 5 Dunlop tyres.
  
  


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