Hello Questers,

Have you ever observed a racing driver vigorously attempting to restart their motorcycle after a fall, using physical effort to get it going?

This is because they don't have the option to start the engine using a traditional key starter system.

Let's delve into the process of starting a MotoGP bike and explore the reasons behind the elimination of the conventional key starter system.

In the world of MotoGP racing, a key or an integrated starter system is notably absent, which might appear peculiar when viewed from the perspective of street-legal motorcycles.

The reasoning behind this omission of a starter system in MotoGP bikes is intrinsically linked to the environment in which these bikes operate – the racing track.

MotoGP racing revolves around factors like speed, acceleration, braking performance, and overall reliability.

Among the key determinants affecting these parameters are the bike's weight and power. When it comes to enhancing acceleration and braking, reducing the weight of the motorcycle emerges as the swifter and more cost-effective solution.

The conventional starting system found in regular motorcycles comprises components such as a battery, an alternator, a starter solenoid, an ignition housing, and various other elements. Collectively, these components add up to a few pounds of unnecessary weight.

Why is this weight considered "dead weight"? Because in a MotoGP race, the motorcycle only needs to be started once – at the commencement of the race.

This renders the key starting system redundant, as an external starting device takes its place.

Initiating the engine of a MotoGP bike without a key involves employing one of three methods, all of which are rooted in a common principle: inducing movement in the pistons within the cylinders to start the engine.

Let's explore these three approaches.

Using a Roller Starter

The roller starter, alternatively referred to as the paddock starter or pit starter, is an electric apparatus comprising two or more rollers positioned beneath the rear wheel of the motorcycle.

It operates through a battery-powered motor, activated by a foot switch, that provides the necessary power to spin the rollers. These rollers are strategically shaped to ensure the stability and positioning of the motorcycle's rear wheel.

Subsequently, the rear wheel, when the clutch is engaged, sets the engine in motion. Once the engine is up and running, the clutch is disengaged, allowing the pit crew to push the motorcycle off the starter.

Crank Start Devices for MotoGP Bikes:

The Ducati racing team employs a crank start device for initiating their bikes. This handheld tool comprises a battery-driven motorized shaft that temporarily connects to the bike's crankshaft. Functioning in a manner akin to the roller starter, this device directly applies rotational force to the crankshaft, bypassing the rear wheel of the motorcycle as in the case of the roller start device.

Push Start or Run Starting in MotoGP Bikes:

This method of starting an engine is a familiar technique to many. It involves manually pushing or towing the motorcycle (or vehicle) while it's in second gear and with the clutch disengaged. Once enough speed is attained to overcome the inertia of the stalled engine, the clutch is engaged, initiating the engine's rotation. The moment the engine ignites, the clutch is disengaged once again.

Racing drivers, especially those needing to restart their bikes on the track after an incident, often employ a jump action during the push start. This action is performed to enhance the traction of the rear wheel when the clutch is engaged.

Shutting Down a MotoGP Bike's Engine:

Okay now we come to know how it's starts si what about how it stops let's get into it ,the engine of a MotoGP bike can be deactivated by pressing the kill switch, typically identifiable by its red color. This switch is conveniently located on the right handlebar, well within reach of the racing driver's thumb. If this switch is inadvertently triggered while on the racing circuit, the bike will gradually come to a controlled stop, unless the driver can restart it.

Furthermore, the kill switch serves a safety function. It incorporates a system that automatically detects the bike's angle concerning the ground. In the event of a fall, this switch autonomously disables the ignition, fuel lines, and various electronic circuits. This automatic deactivation minimizes the risk of fire and reduces potential harm to both the rider and the track marshals who rush to provide assistance.

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Untill then signing off

@JStreetS       

Your Qool Quester 😎