The motorcycle chassis is essential for the structure of the motorcycle, it is something similar to its skeleton, that is to say, it is in charge of supporting and joining all the main parts of the motorcycle. There are different designs, types and materials with which they can be made. We show you how the motorcycle chassis works and what care it requires.
Motorcycle chassis: How it works
The motorcycle chassis is responsible for maintaining stability and control when riding. It is also responsible for absorbing vibrations and shocks, so it is essential to ensure comfort and safety on board, maneuverability and performance.
Chassis parts
- Reinforcing rods: provide rigidity to the chassis to maintain greater stability when cornering.
- Swingarm: supports the rear wheel and connects the transmission and drivetrain to it.
- Frame: it is in charge of supporting all the weight of the motorcycle. The front fork is located on it.
- Subframe: located behind the seat, its function is to support secondary structures, as well as to support the weight of the passenger and the driver. The rear lights or side panels can be mounted on it.
Types of chassis
Motorcycle manufacturers can opt for different types of chassis for each of their models. We tell you which are the main ones and what are the characteristics of each of them:
- Perimeter chassis: it is formed of a tubular structure that surrounds the engine and suspension completely, it is mostly mounted on sport bikes.
- Multitubular chassis: it has several tubes connected to each other to provide a complex support to its components. It is used for racing or sports motorcycles to provide greater rigidity and resistance.
- Monocoque chassis: it is mainly used in sport motorcycles because it is rigid and light. This facilitates cornering stability at high speed and the maneuverability of the bike. It is made in one piece and supports the engine and suspension.
- Double cradle chassis: one of the oldest. Many classic motorcycles are equipped with it. It has two parallel tubes that form a kind of cradle on which the engine and other components are placed.
- Beam chassis: it is composed of one or more beams that serve as a connection between the central tube and the suspension. It is designed for large-displacement motorcycles due to its rigidity and stability in straight lines and curves.
What is the difference between the chassis and the frame?
Although these terms are often used as synonyms, the truth is that they have several differences. The chassis is the main structure of the motorcycle, which is responsible for giving it stability. The frame, on the other hand, is an additional part that serves as a support for the elements of the motorcycle’s powertrain: the rear suspension system, the engine, the exhaust and the transmission.
What happens if the frame is damaged?
In the event that the chassis of the motorcycle is damaged, the results for the motorcycle and the person riding it can be very serious. This is because some other part may be damaged, may not work properly and may affect some of the safety elements. On the other hand, stability will be compromised, with the consequent danger for the rider.
Can the chassis break and why?
The chassis can be damaged or break, one of the most common causes being accidents or crashes. These, due to the force of the impact, can cause structural damage to this part of the vehicle.
On the other hand, environmental factors can also cause damage to the motorcycle chassis. You should pay attention to continuous exposure to salt, humidity or water. These elements can corrode the part.
When faced with a damaged chassis, the best option is always to repair it before the damage gets worse. Sometimes, if it is in very bad condition and cannot be recovered, it will be necessary to replace it with a new one.
How to take care of the motorcycle frame?
Here are some maintenance tips that will help you take care of your motorcycle’s frame to keep it in the best condition for a longer period of time:
Clean it regularly: clean it every so often to remove dirt and debris that may have accumulated. In case of very encrusted dirt you can use degreasers.
Make regular inspections: to take care of the chassis of your motorcycle, there is nothing better than inspecting this part on a regular basis to locate chipping, cracks, damage to welds or traces of rust.
In the event that the damage is serious and you notice cracks or significant damage, the best option is always to call in a professional to carry out the necessary repairs. In this way you can guarantee safety for the rider on the road.