How To Drive A Motorcar
A Key To The Subtleties Of Motoring
År: 1915
Forlag: Temple Press Ltd.
Sted: London
Udgave: 2
Sider: 138
UDK: 629.113 How
Written and illustrated by the Staff of "The Motor"
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HOW TO DRIVE A MOTORCAR
is really quite a negligible matter, as the difference in
position is only a matter of, say, six yards.
Tyres, Road Conditions and Weight
There are other matters connected with traffic driv-
ing which have to be borne in mind. For instance,
there is a distinct diSerence between driving a car
with a steel-studded non-skid tyre on the back and one
with rubber tyres only. Taken all round, the writer
has gradually come to the conclusion that a metallic
non-skid on one rear wheel is the preferable fitment for
all-round use, at any rate in the winter, but whatever
tyres are fittedj onø has again to invoke the aid of the
eye to study immediate surroundings.
For instance, if the day is dry and one is o<i wood
pavement, a car in front with rubber tyres on the back,
granted equal braking efficiency, will draw up more
quickly in this case than one’s own car. Therefore,
when driving in traffic train the eye to take notice of
the manner in which the car just in front of one is
shod, so that in case of a sudden stoppage from any
cause one does not run into the rear of the vehicle
in front, because the braking efficiency of one’s own
car is not equal to the other one.
Then, again, if one is usually accustomed to driving
with a full load of passengers it is necessary to remem-
ber that the braking efficiency of a car is distinctly less
when driving alone, as, of course, the weight on the
back axle is a large factor in assigning the coefficient
of friction available for the braking effort between the
road surface and the wheels of the car.
This weight factor has also to be taken into considera-
tion as regards the skidding propensities of the car, but
it is not proposed to deal with that side of the question
of driving at the moment, as a special chapter is de-
voted to the subject later on.
Another set of changed circumstances which the eye
should be trained automatically to observe without any
specific effort are the varying conditions of the road
surface met with in a large town. For instance, one
may have been driving with rubber tyres on nice dry
roads, where the braking efficiency was very good, and
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