Rolls-Royce Archives
         « Prev  Box Series  Next »        

Comparing acceleration times and braking distances of model 117-MC against a standard model.


Identifier  ExFiles\Box 113\2\  scan0106
Date  4th December 1925
  
R.R. 498A (50 H) (D.D. 31. 12-6-25) J.H.D.

EXPERIMENTAL REPORT. -5- Expl. No. REF Hs {Lord Ernest Hives - Chair} /Rn {Mr Robinson} /LGT4.12.25

Expressing the time to accelerate in m.p.h. and seconds, instead of as in Graph 1. - we have :-

Increase in speed.
Time taken secs.
117-MC.
Standard.
10 - 20
--
4.9
20 - 30
5.0
5.3
30 - 40
5.4
6.4
40 - 50
6.1
7.7
50 - 60
7.4
11.1

And comparing the distances to rest instead of the retardation produced by the brakes :-

Road speed m.p.h.
Distance to rest, ft.
117-MC.
Standard.
60
150
270
50
94
170
40
70
108
30
40
60

Hs {Lord Ernest Hives - Chair} /W.A. Robotham.
  
  
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).


Copyright Sustain 2026, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙