THE ELECTRICAL SYSTEM
(
Supreme and Sports models
)
The lighting and ignition systems are fed by a simple 6 pole alternator generating
set which supplies current through a metal plate rectifier to the battery, this then
feeding the ignition system, lights, horn, etc., through the appropriate switches.
The alternator stator carries 6 coils which are wired in three sets of two series-
connected coils. With the lighting switch in the “Off” and “Low” positions, two coils
only are in operation, but when the headlight is in use or the emergency ignition is
selected, all six coils are in circuit. Regulation of the charging rate is achieved by
linking pairs of alternator coils according to the positions of the head light and
ignition switches.
The alternating current supplied by the generator is converted to direct current by
means of the rectifier, which is of the full wave bridge connected type.
The main connections in the system are made by socket connectors to the lighting
and ignition switches, and by individual insulated snap connectors in the wiring.
These connectors are not intended as plugs and sockets for frequent manipulation and
are only for use when testing or fault finding. It is extremely important that they
should be making perfect connection, as should all other connection points
throughout the system.
Emergency Starting
The alternator equipment includes an emergency starting system which, when the
ignition switch is moved to the emergency position, connects all six coils together
and, providing that the lighting switch is in the “Off” position, gives full output in
order to restore the voltage of a discharged battery. Under these conditions an
immediate start can be made. The maximum charging current in the emergency
position is very high because there is no reduction in current due to the lighting
system, and the engine should not be run with the switch in this position for more
than 10-15 minutes.
At weekly intervals, take off the left side panel to expose the battery. Release its
wire retaining clip, take off the lid and withdraw the battery through the aperture.
Remove the filler plugs from each of the cells and examine the level of the
electrolyte. If necessary, add sufficient distilled water to bring the level of the
electrolyte up to the top of the separators. Do not use tap water and do not use a
naked light when examining the conditions of the cells.
The condition of the battery should occasionally be checked by taking hydrometer
readings of the specific gravity of the electrolyte. If distilled water has been added a
reading should not be taken until after the machine has been used.
Never leave the battery in a discharged condition as it will suffer permanent
damage. When standing idle, the battery should be given a freshening charge at least
8 ampere is recommended. Keep the top of the
battery clean and smear the terminals with vaseline to prevent corrosion.
