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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).
Petrol consumption test results for chassis 2004 and 1649 under different conditions.

Identifier  ExFiles\Box 20\6\  Scan017
Date  1st October 1912
  
COPY
FHR1/H11012.
[Stamp: W.M. RECEIVED 9 OCT 1912]
[Handwritten: by Wormald]
[Handwritten: x 985-]
Westwood,
Crowborough, Sussex.
1st October 1912.

Mr Johnson from F.H.R. for T.C.

PETROL CONSUMPTION TESTS.
------------------------
I have got Waldron to make some petrol consumption tests under different conditions with the 2 chassis I have had here (2004 & 1649), and herewith send you the results which we obtained as I thought they might be of some interest to you.

Chassis 2004.
(A) With clutch out and gears} in down all hills. 16 miles per gallon.
With clutch out & engine running dead slow on governor whenever possible} 14.25 miles per gallon.
Average consumption.............13 miles per gallon.

Chassis 1649.
(A) With clutch out and gears} in down all hills. 17.5 miles per gallon.
With clutch out - engine running dead slow on the governor whenever possible} 15 miles per gallon.
Average consumption.............14 miles per gallon.

F.H.Royce.
  
  


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