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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).
Road tests comparing the performance of 'Pynol' motor fuel against Petrol on a 40/50 R-R Car (49-GB).

Identifier  ExFiles\Box 20\6\  Scan066
Date  15th May 1923 guessed
  
REPORT ON ROAD TESTS OF "PYNOL" MOTOR FUEL.

These tests were carried out on a 40/50 R-R Car (49-GB) with the object of comparing the results obtained by using "Pynol" with those obtained by using Petrol.

These tests may be divided into three sections :-
(1) Acceleration.
(2) Consumption.
(3) Hill climbing.

(1) ACCELERATION.

PETROL.
Change of speed from :- | Time secs. | Acen. ft. sec.
10 to 20 m.p.h. | 5.935 | 2.48
20 " 30 m.p.h. | 5.935 | 2.48
30 " 40 m.p.h. | 7.600 | 1.93
40 " 50 m.p.h. | 12.250 | 1.19

PYNOL.
Time secs. | Acen. ft. sec.
7.0 | 2.10
6.817 | 2.15
8.50 | 1.72
19.45 | 0.75

(2) CONSUMPTION.

PETROL.
Average speed. | Consumption.
22.9 | 16.6 m.p.g.
32.2 | 15.8 "

PYNOL.
Average speed. | Consumption.
22.5 | 16.2 m.p.g.
30.0 | 16.2 "

contd:-
  
  


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