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AS 35850 DC 12V Motorcycle Starter Solenoid Relay

What is a motorcycle starter relay ? 

Definition and Function

A motorcycle starter relay is an electromagnetic switch. Its primary function is to control the high - current circuit that powers the starter motor of a motorcycle. When you turn the ignition key to the “start” position, a relatively low - current signal from the motorcycle's ignition system is sent to the starter relay. The relay then closes its contacts, allowing a much larger current to flow from the battery to the starter motor. This high - current is necessary to crank the engine and start the motorcycle.

Working Principle

Electromagnetic Operation: The starter relay consists of a coil and a set of contacts. When the small current from the ignition switch activates the coil, it creates a magnetic field. This magnetic field attracts an armature (a movable part), which causes the contacts to close. The contacts are usually made of a conductive material such as copper. When the contacts close, they complete the circuit between the battery and the starter motor.

Voltage and Current Handling: The relay is designed to handle the high voltage (usually 12V in most motorcycles) and high current (which can range from tens to hundreds of amperes, depending on the starter motor's power requirements) that the starter motor needs. It acts as a buffer between the low - power control circuit (the ignition switch circuit) and the high - power starter motor circuit.

Components and Construction

Coil: The coil is wound around a magnetic core. The number of turns and the gauge of the wire in the coil determine the strength of the magnetic field generated for a given current. The coil's resistance is designed to match the voltage and current characteristics of the control circuit it is connected to.

Contacts: There are usually two main contacts - a movable contact and a stationary contact. The movable contact is attached to the armature, and when the armature is attracted by the magnetic field of the coil, it moves to close the gap between the two contacts. The contacts are designed to handle high - current flow without overheating or arcing excessively.

Case: The relay is housed in a case, usually made of a durable plastic material. The case provides insulation to protect the internal components from external factors such as moisture, dirt, and physical damage. It also helps to contain any electrical arcing that may occur during contact closure and opening.

Importance in Motorcycle Operation

Protecting the Ignition System: By using a starter relay, the high - current demands of the starter motor are isolated from the ignition switch and other low - power components in the motorcycle's electrical system. If the high - current for the starter motor were to flow directly through the ignition switch, it could cause the switch to overheat and fail. The relay acts as a safeguard, ensuring the longevity and proper function of the ignition system.

Efficient Engine Starting: It provides a reliable means of delivering the necessary power to the starter motor. A well - functioning starter relay ensures that the engine cranks with sufficient speed and torque to start smoothly. If the relay fails, the starter motor may not receive enough current to operate effectively, leading to difficulties in starting the motorcycle.

    Product Description

    Brand

    Dr. Solenoid

    Model Number

    AS 35850

    Rated Voltage (V)

    DC 6V , 8 V or  12 V 

    Current

     20-100 A

    Work Mode

    Battery current Starter

    Insulation Resistance

     20 Ω

    Valve

     Starter Solenoid

    Circuitry

    SPST

    Service Life

    300,000 times

    Certification

    CE,ROHS,ISO9001,

    Material

    Carbon Steel Housing with Zinc Plated Coating

     Terminal.

      1/4M-28 zinc-plated steel stud

    Install Style

    Adjustable Screw

    Tolerance of Dimension

     +/-  0.1 MM

    Water-proof

     None

    Insulation Class

    F   155 Degree

    Hi-Pot Test

    AC 600V 50/60Hz 2s

    Non-excitation Holding Force

    0

    Working Temperature

    -10°C-100°C

    Duty Cycle

    1-100%

    Thread Depth(mm)

    /

    Payment Term

    TT, or LC At Sight

    Sample Order

    Yes

    Warranty

    1 Year

    MOQ

    1000 pcs

    Supply Ability

    5000 pcs per Week

    Delivery Time

    30 Days

    Port of Loading

    shenzhen


    Product detail diagram

     Unit Features:

    1 High quality &easy to install:

    2 made of copper coil inside,

    3 rust-proof, easy to ignite,

    4 oxidation-resistant and high temperature-resistant.

    5 The contacts are silver alloy can improve the service life of the whole relay.

    Why is the starter relay damaged?

    A motorcycle's starter relay can become damaged due to several reasons. One of the most common causes is natural wear and tear over time. The internal components of the relay, such as the electrical contacts and solenoid, can wear out due to constant use.

    Another reason is the accumulation of dirt and corrosion on the electrical contacts. This can make it difficult for the relay to make a solid electrical connection and, as a result, you may experience failures when trying to start the bike.

    Additionally, problems in the motorcycle's electrical system, such as unstable voltages or current spikes, can also damage the starter relay.

    How to correctly connect a motorcycle starter relay

    Correctly connecting a starter relay is essential to ensure that it works effectively and that the motorcycle engine starts smoothly. Below, we present the basic steps to connect a motorcycle starter relay:

    Identify the starter relay:Locate the starter relay on your motorcycle. It is usually located near the battery or in the engine area.

    Disconnect the battery:Before working on any electrical component of your motorcycle, be sure to disconnect the battery to avoid short circuits or electrical shock.

    Remove the old relay:Disconnect the wires that are connected to the old starter relay and remove it from its bracket.

    Install the new relay:Place the new starter relay in place and connect the wires properly. Make sure the cables are secure and there are no loose connections.

    Reconnect the battery:Reconnect the motorcycle battery.

    Test the boot:Turn the ignition key and check that the starter motor is working properly.

    Conclusion:

    A motorcycle starter relay is an essential part that can become damaged over time due to wear, dirt, corrosion, or other electrical problems. Connecting it correctly is essential for a safe and efficient start of the motorcycle. If you are experiencing problems starting your motorcycle, consider checking and, if necessary, replacing the starter relay to keep your motorcycle in optimal condition.

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