How to Remove a Starter Idler Gear Shaft on My V Star Motorcycle UPDATED

How to Remove a Starter Idler Gear Shaft on My V Star Motorcycle

Pre-engaged starter

The pinion is moved past the solenoid; there is an initial menses in which the motor turns slowly to permit engagement, so the whole operation is more gentle and causes less clothing on the teeth.

To brand an engine commencement it must be turned at some speed, so that it sucks fuel and air into the cylinders , and compresses it.

The powerful electrical starter motor does the turning. Its shaft carries a small pinion ( gear bicycle) which engages with a large gear band around the rim of the engine flywheel .

In a front-engine layout, the starter is mounted depression downwardly near the dorsum of the engine.

The starter needs a heavy electric current , which it draws through thick wires from the bombardment . No ordinary hand-operated switch could switch it on: it needs a large switch to handle the loftier current.

The switch has to be turned on and off very apace to avert dangerous, damaging sparking. And so a solenoid is used - an arrangement where a small switch turns on an electromagnet to complete the circuit .

The starter excursion

All the components are earthed to the metallic car body. Simply one wire is needed to acquit current to each component.

The starter switch is commonly worked by the ignition key. Turn the key beyond the 'ignition on' position to feed current to the solenoid.

The ignition switch has a return spring , so that as soon as you release the key it springs dorsum and turns the starter switch off.

When the switch feeds electric current to the solenoid, the electromagnet attracts an iron rod.

The movement of the rod closes two heavy contacts, completing the excursion from the bombardment to the starter.

The rod also has a return spring -when the ignition switch stops feeding current to the solenoid, the contacts open up and the starter motor stops.

The return springs are needed considering the starter motor must not turn more than than it has to in order to start the engine. The reason is partly that the starter uses a lot of electricity, which quickly runs down the battery.

Also, if the engine starts and the starter motor stays engaged, the engine will spin the starter then fast that it may be badly damaged.

The starter motor itself has a device, chosen a Bendix gear, which engages its pinion with the gear band on the flywheel simply while the starter is turning the engine. Information technology disengages as soon as the engine picks up speed, and there are two ways by which it does and then - the inertia system and the pre-engaged organisation.

The inertia starter relies on the inertia of the pinion - that is, its reluctance to begin to plough.

Inertia system

An inertia type starter: this 1 is an 'inboard' type in which the Bendix gear throws the pinion towards the motor; in that location are also 'outboard' ones in which it moves the other way.

The pinion is not fixed rigidly to the motor shaft - it is threaded on to it, similar a freely turning nut on a very coarse-thread bolt.

Imagine that you all of a sudden spin the bolt: the inertia of the nut keeps it from turning at once, so it shifts along the thread of the bolt.

When an inertia starter spins, the pinion moves forth the thread of the motor shaft and engages with the flywheel gear ring.

It then reaches a end at the stop of the thread, begins to plough with the shaft and and then turns the engine.

The inertia of the heavy piston assembly prevents it from spinning immediately when the motor shaft turns, and so information technology slides along the thread and into engagement; when the engine starts, the pinion is turned faster than its shaft, then it is thrown back out of appointment.

Once the engine starts, it spins the pinion faster than its own starter-motor shaft. The spinning action screws the pinion back downwards its thread and out of engagement.

The pinion returns so violently that there has to be a stiff spring on the shaft to absorber its impact.

The violent engagement and disengagement of an inertia starter can crusade heavy wear on the gear teeth. To overcome that problem the pre-engaged starter was introduced, which has a solenoid mounted on the motor.

In that location'due south more to a machine starter system: As well equally switching on the motor, the solenoid also slides the pinion along the shaft to engage information technology.

The shaft has straight splines rather than a Bendix thread, so that the pinion always turns with it.

The pinion is brought into contact with the toothed ring on the flywheel by a sliding fork. The fork is moved by a solenoid, which has two sets of contacts that close i later on the other.

The commencement contact supplies a depression current to the motor so that it turns slowly - just far plenty to let the pinion teeth appoint. Then the second contacts close, feeding the motor a loftier electric current to turn the engine.

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How to Remove a Starter Idler Gear Shaft on My V Star Motorcycle UPDATED

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