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battery must become less as the charge nears completion. The regulator requires absolutely no attention as there is practically

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Fig. 235.—Method of Installing Bosch-Rushmore Starting Motors on Mar

mon Engines Shown at the Top. Location of Ignition Magneto and Current Generator Depicted at the Bottom.

nothing to get out of order. The generator terminals, lamp and battery wires all lead into the switch box on the dash, which contains, besides the regulating devices, the volt-ammeter and the

lighting switch. The volt-ammeter permits a constant check on the operation of the system. When the control lever is thrown to the left the needle should show 12 to 15 volts when the engine is running rapidly or about 12 volts when the engine is stopped. When the lever is turned to the right to indicate amperes the current discharge when engine is not running is about 8 amperes for the full

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Fig. 236.-Views Showing Control Members of Bosch-Marmon Starting

and Lighting System.

lamp load, and will vary from this point to 8 or 10 amperes charge with a rapidly running motor, no lamp load and a partially discharged battery. Whenever the needle indicating amperes is to the right of zero the battery is being charged. Whenever the needle is to the left of zero current is being drawn from the battery. The starting motor (Fig. 237) is strapped firmly to the crank case and is a simple but powerful series wound motor having a movable armature. The motor is a plain bearing type, so oil

must be placed in the oilers periodically. The instructions given for the care of storage batteries in connection with other systems apply just as well to the Bosch System.

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Fig. 237.—Sectional Diagram at A Shows Internal Construction of Bosch

Rushmore Starting Motor Which is shown Dismantled at B.

Remy Starting, Lighting and Ignition Systems.—The Remy Systems are made in a number of patterns, most of these operating on the two unit principle. The Remy System used on the Oakland Model 32 uses the No. 166 ignition generator and the model No. 114 starting motor. The model 166 ignition generator is similar in

Arm

Shunt

12 Volt

Motor

construction to that shown at the left of Fig. 239 except for the mounting of the cutout relay which is placed at the back of the instrument, instead of on a bracket close to the coil. The parts comprising the Oakland starting and lighting system are clearly shown in Fig. 240, all circuits which operate on the one wire principle being clearly shown. The ignition generator is a low speed, 6 volt machine of the four pole shunt wound type and is driven at one and one half times crankshaft speed. The maximum current output is obtained at moderate car speed and it generates ample current to keep the battery fully charged. The control of the

H current output is auto

- Battery Starting

H matically obtained by

H a vibrator type of regulator. The armature is a slotted drum type and is carefully balanced in order to

Startingle minimize bearing stresses. The ignition

Fig. 238.–Wiring Diagram for Type A Boschdistributor, which em

Rushmore Starting Motor. bodies the distributing mechanism and circuit breaker is simple in design and is positively driven from the armature shaft. The ignition coil is also mounted on the generator in order to simplify wiring.

The starting motor is a four pole series wound machine using the Eclipse-Bendix automatic transmission to connect the motor with the engine. In this type the extended armature shaft carries a hardened steel sleeve upon which a triple worm gear is cut. Operating upon this sleeve is a hardened steel pinion having a lateral travel of about 142". When the current is supplied to the starting motor, the armature, being free, begins to revolve at a high rate of speed. The pinion, by reason of its property of inertia

CO

• Arm

Shunt

Wiring Diagram for Type "A" 40

Flywheel Starting Motors.

Switch

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Fig. 239.—Parts of Remy Two Unit Starting, Lighting and Ignition

Systém.

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Fig. 240.—Arrangement of Parts of Remy Two Unit System Used on

Oakland Model 32 Cars.

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