Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Brake and dynamometer test results comparing a Rolls Royce vehicle with a Delage vehicle.

Identifier  ExFiles\Box 21\4\  Scan079
Date  30th July 1920 guessed
  
-2-

BRAKE TEST ON ROAD (DRY TARMAC)

Speed. R.R. Delage. Remarks.
20 MPH. 15 yds. 7 yds. Delage tyres Michelin safety treads.
30 MPH 32 yds. 18 " R.R. Dunlop Magnum Goodyear. diamond tread.
40 MPH. 57 yds. 40 "

DELAGE ON DYNAMOMETER.

Revs. M.P.H. Dyn. lbs. HP.
500 12 109 86 12.56 13.4
750 20 152.5 84 14.97 18.3
1000 27 1/2 200 70 18.76 20
1250 35 1/4 250 66 22.07 23.5
1500 43 306.25 56 23.08 24.5
1750 49 346.25 53 24.59 26.2
2000 55 1/4 388.75 45 23.44 25
2250 60 432.5 30 17.30 18.5

Compression — 73 and 74 lbs.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙