Motor Road Transport For Commercial Purposes
(Liquid Fuel, Steam, Electricity)
Forfatter: John Phillimore
År: 1920
Forlag: Sir Isaac Pitman & Sons, Ltd.
Sted: London
Sider: 212
UDK: 629.113
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ELECTRIC VEHICLES
81
differential gear to the road wheels through the medium
of side chains.
Another system is by means of gearing in place of
the chain drive from motor spindle to counter-shaft.
If two motors are fitted, they may either be placed
in the wheel hubs or connected by spur-gearing. In
the former case the chief disadvantages are that large-
size hubs are required and slow-running motors, and
this means increased weight and direct contact with
road wheel shocks. The advantages are that owing
to the elimination of gearing, efficiency is increased
and weight is saved : thus the total weight of the two
designs probably would not differ to any great extent,
When front wheel drive is adopted, tlie motors are,
as a rule, connected to the driving wheels, as in the
case of the spur gearing pattern mentioned above,
through some spring attachment in order to ensure
correct meshing of the wheels under running conditions.
The uses to wliich. the electric vehicle is being put
are constantly increasing, and a very good example
of this is to be found in the almost universal adoption
of the electrically-driven chassis by municipalities and
other public bodies.
6—(1889)