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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).
On Peregrine oil temperatures, detailing readings taken during a run where the bottom half was cooled by snow.

Identifier  ExFiles\Box 1\4\  B001_X 100a-page228
Date  26th February 1933
  
Ro{C. C. Rose - Export Manager}
E (crossed out)
B
Byrem By
V4057

To Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}
From GWH{George W. Hancock - Head Chateauroux}

Hotel de France
Chateauroux
Indre

26.2.33.

P E R E G R I N E

Re oil temperatures we had during the afternoon, the effect of the bottom half being cooled by snow. The readings taken are as follows:

Temperatures
Miles Air Oil Water
25 12° 75° 80°
50 11° 60° 74°
75 13° 40° 70°
100 13° 73° 78°

The speed of the car was dropped when they came to the snow but it shows that we are now getting results nearer to our other cars than what we have experienced.

On the other hand during the morning run, they had a clear course and during the all out speed for approx. 20 miles, the oil temp. reached 102° the average for the remaining mileage being 85° C. Therefore it is not the average that we have to provide for, but a burst of speed that can frequently be obtained on the Continent.

GWH.{George W. Hancock - Head Chateauroux} [Signature]

FJP (crossed out)
Please record
  
  


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