Top Moto

  • Home
  • Helmets
    • Motorcycle Helmets
    • Full-Face Helmets
    • Open-Face Helmets
    • Half-Face Helmets
    • Modular Helmets
    • Adventure Helmets
    • Dirt Bike Helmets
    • Women’s Helmets
  • Riding Gear
    • Motorcycle Jackets
    • Motorcycle Gloves
    • Motorcycle Pants
    • Motorcycle Boots
    • Motorcycle Rain Gear
  • Accessories
    • Motorcycle Backpacks
    • Motorcycle Phone Mounts
    • Motorcycle Bluetooth
    • Motorcycle GPS
    • Motorcycle Helmet Cameras
  • Tools
    • Motorcycle Locks
    • Motorcycle Covers
    • Mototcycle Lifts & Jacks
    • Motorcycle Hitch Carriers
  • Bike Care
    • Motorcycle Oils
    • Motorcycle Chain Lubes
    • Motorcycle Batteries
    • Motorcycle Battery Chargers
  • About

What Are the Basic Motorcycle Systems

2023-01-29T18:26:35+01:00Update: 2023-01-29 2023-01-29T18:26:35+01:00 by Tom - 4 Comments

What Are the Basic Motorcycle Systems

In the previous chapter, “The brief history of motorcycles,” we discussed the motorcycles of the early and current days and how motorcycles have changed throughout the years. But now we will learn about Basic Motorcycle Systems.

There are many parts and systems that are common in all motorcycle types, some of which came in the early days and are still running in this era. Whether you are an owner or a mechanic, you must know the basic systems of a motorcycle. It will help you to understand the mechanics of motorcycles and how every part has a role in its processing.

So, let’s take a look at the basic parts and systems that we should all become familiar with.

The List of Basic Motorcycle Systems

  • The Frame
  • Wheels & Brakes
  • Suspension
  • Engine
  • Drive Train
  • Fuel System
  • Ignition System
  • Electrical System

Here we will discuss each part or system briefly but in later chapters, we will talk about each and every one of them separately and in more detail.

Frame

The motorcycle frame is like the backbone of the human body. A motorcycle frame provides support to both suspensions, the engine, and is also attached to the fuel tank and battery system. The frame has hinge points for the suspension and supports the rider or any luggage. Over time and new motorcycle designs, the frame’s core structure and material have also changed.

Motorcycle Frame
Motorcycle Frame

In the old days, the frames were made of tubular steel only, but now, in modern days, the frames are made of different materials like Aluminum, Titanium, Magnesium, and Carbon-fiber. But these materials are used on the basis of cost and other various parameters that are quite different across the different types of motorcycles. The types of motorcycles are also the reason for different types of frames that are now designed for complexity, weight distribution, and power, etc.

Wheels & Brakes

Alloy Motorcycle Wheel
Alloy Motorcycle Wheel

Like the frames, wheels have also changed over time. Back then, most motorcycle wheels were spoked for lighter weight and rigidity. In the old days, stamped or pressed steel wheels were used. In fact, now many minibikes and low-cost motorcycles come with pressed steel wheels. But alloy wheels are being used in most other motorbikes, which are quite costly.

The main reason for the high usage of alloy wheels over steel wheels is because of the light weight. Alloy wheels are made of an alloy of aluminum and magnesium, which are very light in weight compared to steel wheels. Since they are lightweight, alloy wheels provide more acceleration and less strain on suspensions and brakes.

Pressed Steel Motorcycle Wheel
Pressed Steel Motorcycle Wheel

However, the steel wheels being used in less expensive bikes are rigid but also heavy. Despite that many people still choose steel wheels over alloy wheels because they are easily maintained and less expensive.

When talking about brakes, they are applied with a cable and lever system or hydraulic systems that use fluid under pressure to operate.

There are two types of brake systems used in motorcycles – 1. Drum brakes and 2. Disc brakes.

As you can see in these images, the disc brakes have a rotor, disc pads, bearings, and other parts. On the other hand, drum brakes have a backing plate, springs, and brake shoes, etc.

Disc Brakes and Drum Brakes
Disc Brakes and Drum Brakes

Suspension

The suspension is used to provide comfort to the rider by minimizing the road shocks and vibration. On motorcycles, the front and rear suspensions are different.

The front suspension system is the telescopic forks that are a combination of internal springs, sliding tubes, and hydraulic dampening to reduce road shocks and provide a smooth ride to the motorcyclists. There is another type of front suspension system which is the Earles Type, which greatly used in off-road motorcycles.

Rear Suspension System
Rear Suspension System

However, the rear suspension system consists of swing arms that attach the frame to the rear wheels. The coil spring shock absorber combinations attach to the swingarm near the axle, which is fixed to a solid frame.

Engine

The most important part of any motorcycle is its engine. Knowing your engine’s configuration or design is something very common you will see in motorcycle enthusiasts. There is a lot of arguments regarding the 2-Stroke engine versus the 4-Stroke engine. Is a bigger engine always better? Well, there is no doubt the motorcycle engine is a very important system. So, let’s take a look at the different types of engines and find out “how these engines work?”

4-Stroke Engine

The four-stroke engine is used in many motorcycles, cars, and trucks. It was first demonstrated by Nikolaus Otto in the year 1876 and from that point, it became known as the Otto Cycle.

Intake Stroke

During the intake stroke, a piston moves downward drawing a fresh charge of fuel and mixture. Then the air and the mixture enter into the combustion chamber.

4-Stroke Engine Intake
4-Stroke Engine Intake

Compression

In the compression process, the piston rises and compresses the mixture of air and fuel.

4-Stroke Engine Compression
4-Stroke Engine Compression

Power

At the top of the combustion chamber, the spark plug fires and ignites the compressed fuel. When the fuel is burned, it expands, which drives the piston downward.

4-Stroke Engine Power
4-Stroke Engine Power

Exhaust

And when the piston rises upward once again, it forces the sludge or exhausted fuel to go out of the exhaust valve, which is opened by the cam/lifter mechanism.

4-Stroke Engine Exhaust
4-Stroke Engine Exhaust

2-Stroke Engine

In simple language, a 2-Stroke engine completes the same process in only two strokes of the piston. Let’s see how it is done in a 2-Stroke Engine.

Intake Stroke

The air/fuel mixture enters into the crankcase by a vacuum port, which is opened during the upward stroke of the piston.

2-Stroke Engine Intake
2-Stroke Engine Intake

Crankcase Compression

In the downward stroke, the intake valve is closed by the crankcase pressure and the fuel mixture is then compressed during the remainder of the stroke.

2-Stroke Engine Crankcase Compression
2-Stroke Engine Crankcase Compression

Transfer/Exhaust

Towards the end of the stroke, the intake port opens once again and the piston allows the compressed air/fuel into the crankcase, which moves around the piston into the chamber. This compressed fuel/air expels the exhaust gasses or sludge from the exhaust port located on the other side of the cylinder.

2-Stroke Engine Transfer
2-Stroke Engine Transfer

Compression

Once again, the piston rises and compresses the fuel/air mixture and at the same time, another stroke is occurring beneath the piston.

2-Stroke Engine Compression
2-Stroke Engine Compression

Power

At the top of the stroke, the spark plug ignites the mixture. The result, burning fuel expands, driving the piston downward to complete the cycle.

2-Stroke Engine Power
2-Stroke Engine Power

There is a lot to discuss about the 2-Stroke and 4-Stroke engines, which we do in later chapters. And we will also learn about Twin and Multiple Cylinders.

Drive Train

The engine provides the power to turn the rear wheel and the mechanical systems connected to the engine and the rear wheel is called the Drive Train.

Motorcycle Drive Train
Motorcycle Drive Train

Fuel System

The Fuel System of the motorcycle is used to store or regulate fuel during the compression occurring in the cylinder. As you can see the fuel system in the figure below, it has various parts, which play different and key roles in the process of storing and regulating fuel.

Motorcycle Fuel System
Motorcycle Fuel System

Ignition

Ignition is used to start the fuel burning to make the piston to go down and make the motorcycle move. There are three types of ignition systems which include –

  • Magneto Ignition System
  • Battery and Coil Ignition System
  • Electronic Ignition System

Electrical System

A motorcycle needs electrical systems to increase the safety for a rider. Besides the ignition system, the motorcycles have a headlight and taillight, warning lights, turn signals (indicators), horn, radio, and electric starters, etc.

Now, you have gone through the basic motorcycle systems that are common in most motorcycles. You can learn about these systems from here one by one. This can help you to stay informed about the latest technology used in motorcycles each year. After all, it would be a good thing to fix your motorcycle on your own.

As I mentioned earlier, you can learn about every motorcycle system in detail in later chapters, where everything will be described in detail, which may help you to improve your mechanical skills.

Filed Under: Motorcycle Mechanics, Motorcycle Parts, Tips & Training

Comments

  1. Chrispus says

    September 21, 2022 at 2:50 pm

    Thank you so much, I have gotten basic knowledge on a motorcycle.

    Reply
  2. Nabasumba Brenda says

    March 30, 2022 at 10:03 am

    Thanks alot
    Would love to be getting information from u guys

    Reply
  3. Kristian Noel Panes says

    June 5, 2019 at 12:17 am

    Thank you very much! Atleast, however. I have a knowledge how the motorcycle engine works.

    Reply
    • TopMoto.com says

      June 18, 2019 at 9:42 pm

      You are welcome, thank you for reading our blog!

      Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Search on Website

Table of Contents

  • The List of Basic Motorcycle Systems
  • Frame
  • Wheels & Brakes
  • Suspension
  • Engine
    • 4-Stroke Engine
    • 2-Stroke Engine
  • Drive Train
  • Fuel System
  • Ignition
  • Electrical System

Featured Reviews

  • Top 10 Best Motorcycle Helmets
  • Top 12 Best Motorcycle Jackets
  • Top 10 Best Motorcycle Gloves
  • Top 15 Best Motorcycle Boots
  • Top 10 Best Motorcycle Bluetooth Headsets

Amazon Associates Program Disclosure

TopMoto.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

All Rights Reserved © 2016-2023. Powered by Wordpress.

  • About Us
  • Contact Us
  • Privacy Policy
  • Affiliate Disclosure
  • All Posts