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STREAMLINING
. . ? — — — — . m ?
ITS GREAT IMPORTANCE
SAVING WASTED POWER
No doubt a great many Australian
owners of motor cars that have seen
several years of service wonder whjr «b
much, fuss is to-day being made over
streamlining. The increasing call for
greater efficiency and decreased *m- «
uing costs is the answer.
In the days when good roads tnae
few, and average -touring motor speeds
comparatively low, no, one appeared to
worry about the loss of power in over
coming air resistance, but now that
average road speeds have stepped op.
the loss of horse power has fio' be made
good by usirig'c'more powerful engines
and more petrok*
Efficient streamlining reduces , the
power needed* to attain a giveii road
speed. Travelling at twenty miles per ?
hour the average closed car, it is stated,
expends about 25 per cent, of its power
to overcome air resistance; at forty
miles per hour it has mounted to about
61 per cent., and at sixty miles per hour
to 77 per cent. '» . '
The science of air flow of streamlin
ing is now 'being applied, more, or less,
by automobile manufacturers with the
object of reducing the large proportion
of an engine 's power, wlglftt is expand
ed in forcing an unstreanilineAstgBr
through the air. When this is attaaifed
it means better road performance
without any increase of horsepower.
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