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The variator 125 is an automatic transmission system often used in scooters and motorcycles. The variator helps to change the vehicle's speed while maintaining a steady engine speed. The Variator comprises three main parts: the drive pulley, the driven pulley, and the belt that connects the two.
The variator 125 type is categorized according to size and performance:
Standard Variator
This is the stock or original variator that comes with scooters and motorcycles. Standard variators are designed for everyday riding and are very reliable. They work well in different weather and road conditions. The standard variator has a wider range of weights and belt sizes. This makes it easy to maintain and repair. Spare parts for the standard variator are cheap and easy to find.
Performance Variator
Performance Variators are aftermarket parts. They are made for scooters and motorcycles that need more power. Racing or tuning companies make performance variators. These variators have tighter tolerances and use high-quality materials. For example, a performance variator may have aluminum or magnesium components. This makes the variator lighter. A lighter variator can spin faster and improve acceleration. Performance variators have a larger diameter or more ramp angles. This helps to increase top speed.
Torque Drive Variator
Torque Drive Variators are designed for electric scooters. They help to transfer the torque from the electric motor to the wheels. The Torque Drive Variator has a different pulley design compared to the standard variator. The pulleys are optimized for high torque delivery. This improves the pickup and acceleration of electric scooters.
CVT Variator
The CVT (Continuously Variable Transmission) Variator is a type of transmission system that allows for smooth and seamless acceleration without any noticeable shifting of gears. In a CVT variator, the ratio between the drive and driven pulleys can be adjusted continuously, enabling the engine to run at its most efficient speed, regardless of the vehicle's speed or acceleration. This results in better fuel efficiency and performance. Many scooters and motorcycles use the CVT variator. The CVT variator improves the ride quality by making the acceleration smooth. Riders don't have to think about changing gears.
Below are some common specifications of the variator 125:
Here are some maintenance tips for the variator 125:
There are several factors that are considered when choosing a variator, and they include the following:
Purpose
The rider's needs will affect the selection of the variator. If the rider rides for leisure, a standard variator will be a good pick. However, if the rider rides for competitions, then a performance variator will be needed in order to gain a competitive edge.
Engine Size
The engine size is an important factor when choosing the variator. This is because the engine size determines the amount of power produced. A larger engine produces more power and requires a heavy-duty variator, while a smaller engine requires a standard variator.
Riding Style
Riding style is also a factor that affects the choice of the variator. A sports rider who does a lot of acceleration and high-speed riding needs a performance variator, while a commuter rider who does low-speed riding and occasional acceleration can use a standard variator.
Budget
The budget also plays a huge role in the choice of variator. Performance variators are more expensive compared to standard ones, and they also require more maintenance. Therefore, a commuter rider can go for a standard variator, while a performance variator is suited for competitive riders.
Brand and Quality
It is important to choose a good quality variator from a reputable brand. This is because good quality variators offer better performance and durability. The budget may determine the choice of brand, as good quality variators are more expensive compared to those from lesser-known brands.
The following are the steps for DIY replacement of the variator:
Safety precautions:
Read the service manual to know how to disassemble and reassemble the specific model's engine parts. Wear safety gear, such as gloves and goggles, to protect oneself from injuries. Ensure the scooter is on a level surface, and use the center stand or a suitable stand to keep it stable.
Gather necessary tools:
Get the tools required for the job, such as sockets, wrenches, torque wrench, variator holder tool, and any other special tools mentioned in the service manual.
Remove the transmission cover:
Remove the screws or bolts securing the transmission cover and carefully take it off. This will give access to the variator and the rest of the transmission system.
Secure the crankshaft:
Use the variator holder tool or a suitable tool to lock the crankshaft to prevent it from rotating while loosening the variator nut.
Remove the variator:
Use a socket wrench or a suitable tool to remove the nut securing the variator to the crankshaft. Carefully pull the variator off the crankshaft, taking care not to damage any surrounding components.
Replace the drive belt:
If the drive belt is worn or damaged, this is a good time to replace it. Remove the belt from the pulleys and install a new belt, ensuring it is the correct size for the scooter.
Inspect and replace rollers (if necessary):
Check the rollers inside the variator for wear or damage. Replace them with new rollers of the correct size and weight if needed. This can improve acceleration and overall performance.
Reassemble:
Place the variator onto the crankshaft and secure it with the nut, using the variator holder tool to the right torque. Reinstall the transmission cover, ensuring all gaskets and seals are in good condition. Follow the disassembly instructions in the service manual to reassemble any other removed components.
Q1: What is a variator 125?
A1: A variator 125 is a type of transmission component found in many scooters and motorcycles with 4-stroke, single-cylinder, air-cooled engines. It helps to automatically change the gear ratio as the engine speed changes, allowing for smoother acceleration and optimal power delivery.
Q2: Does the 125cc scooter have good acceleration?
A2: While the acceleration of a 125cc scooter can be decent, it is not as impressive as that of a 250cc or more powerful scooter. However, the variator and weights on the 125cc scooter can be tuned to improve take-off and low-speed performance.
Q3: Is the 125cc scooter good for carrying passengers?
A3: The 125cc scooter can carry a passenger, but its performance may be affected. For long journeys or on highways, a more powerful scooter, like a 150cc or 200cc model, may be more comfortable and efficient for both the rider and passenger.
Q4: How does the performance of a 125cc scooter vary across different brands?
A4: The performance of a variator 125 from different brands may vary due to factors like engine tuning, transmission differences, and overall weight. Some brands may offer slightly better acceleration, top speed, or handling characteristics, so it's essential to test ride a few options before deciding.
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