Scooters are one of the most preferred types of two-wheelers and it’s not hard to see why – the convenience, the comfort, the classic look, what’s not to like! Still, people hesitate to get one because the mechanics of a two-wheeler can be quite daunting. So, do scooters have gears? Here’s the complete answer.
Do Scooters Have Gears?
In short, no. Scooters do not have gears and it’s one of the main reasons why they are so convenient to use. The transmission system of a scooter is unlike what a moped, motorcycle, or even a motorized bicycle has.
A scooter runs on an automatic transmission system while other two-wheelers are equipped with a manual transmission system. It removes the need for a traditional gearbox which means no manual shifting is required to drive the scooter.
Not to mention, the automatic transmission system does not have an external control system. This opens up considerable space at the floor of the scooter’s seat and allows the rider to rest their feet and enjoy their drive comfortably.
This feature of scooters especially helps senior citizens and orthopedic patients get their chores done around the city independently and safely.
It is pertinent to mention, however, that the transmission system of an electric scooter does have a gear train and a bevel gear differential. It adds to the benefits of a standard scooter and improves the efficiency of the engine, plus it levels down the noise while driving.
Though the benefits of using an automatic transmission system in a scooter are seemingly endless, engineers have proposed better transmission rigs for motorized vehicles. They are most focused on improving the performance, life span, and power of a scooter.
How Does a Scooter Work Without Gears?
Gearless vehicles like scooters use a Continuous Variable Transmission system – CVT for short, as its main ‘gearbox’. It mainly eliminates the need for shifting gears and simplifies the working of a two-wheeler.
CVT works with the help of a pair of pulleys and a connecting v-belt made of rubber or metal. One of the pulleys is placed at the front of the scooter while the other pulley is situated at the back. The connecting belt runs between the two pulleys and sits in between the cones of the pulleys.
Now that you know the basic parts of a CVT, here’s how it works:
- One of the pulleys is attached to the engine and known as an input pulley while the other pulley is attached to the driving wheel and known as the output pulley.
- On accelerating, the power from the engine is transmitted to the input pulley which turns the output pulley. The power is then sent to the driveshaft and the wheel turns.
- In between the transmission, the input pulley ‘closes’ and the input pulley ‘opens’ with the help of the connecting belt. Hence, the name continuous variable transmission.
The continuous manner of the pulleys is what helps adjust the gear ratios while the diameter of the pulleys is what determines the maximum and minimum gear ratios. Generally, the greater the diameter, the higher the RPM of the scooter’s engine and the more torque delivered.
Is a Continuous Variable Transmission Gearbox in Scooters Better than the Traditional Gear in Two-Wheelers?
A continuous variable transmission system has revolutionized the world of motorized vehicles so now scooters are now strictly equipped with automatic transmission systems. Here’s why it’s proving to be better than all other traditional gearboxes – even in a car.
Easy to Operate
An automatic transmission system like CVT improves accessibility for all and allows everyone, from pregnant women and senior citizens to specially-abled people and orthopedic patients, to use it without needing assistance.
Improves Engine Efficiency
Connected to the engine, the CVT system has near-infinite probabilities of gear ratio adjustments. It positively sets the RPM according to the acceleration of the scooter and dials down when needed. The instantaneous perfect adjustment improves the engine’s efficiency.
Because a CVT is made up of less than three parts, the automatic transmission system is incredibly lightweight but durable. The engine carries, controls, and transmits power easily plus the weight of the scooter is easier to handle for the rider.
Like every piece of electronic equipment, a CVT also has some room for improvement. Fortunately, none of them are a dealbreaker.
Although the pulley system is the best addition to the CVT system, it cannot actually handle a lot of RPM and is not suitable for towing or use in bigger vehicles.
The metal pulleys also come into contact often (especially when accelerating) which makes a little noise and risks potential degradation of the material.
How to Maintain the Performance of a Continuous Variable Transmission System in Scooters?
Continuous Variable Transmission systems are durable but they are hard to find on the market. This is also why the cost of repair is significantly higher than the expense of repairing a manual transmission system.
Maintaining a CVT system is necessary and it helps deviate the need for constant (re: expensive) repairs.
Generally, it is best to refer to the scooter’s instruction and manufacturing manual to understand the specifics required for the scooter. Here’s a general overview of what may be required:
- First and foremost, clean the CVT filters. The manual will suggest the total miles after which the CVT filter will need to be cleaned out.
- Second is the replacement of CVT filters. This may be done when the need arises or as a general rule of thumb after two years or after completing 30,000 miles. Do it sooner rather than later.
- Another replacement to keep in mind is the CVT rollers. They are to be inspected and replaced at least after completing 8,000 miles. This keeps the automatic gear ratio adjustment in check.
- A CVT system also needs an oil change to keep its health in check. Simply maintain the gear oil and occasionally drain the transmission fluid as per the manual’s suggestion.
Frequently Asked Questions
How are gears shifted in scooters?
Unlike motorcycles and motorbikes, scooters operate on an automatic transmission model that does not require shifting gears. This adds to the rider’s convenience. It runs on a constant RPM that doesn’t need to be changed manually.
Why do scooters have no gears?
Scooters are designed with an automatic system that is powered by the engine and does not need a traditional gearbox for its transmission. It is known as a Continuous Variable Transmission or CVT for short. Utilized mainly for its convenience in electric scooters, it also helps tone down the noise level and improves the vehicle’s efficiency so it runs longer.
Now that you’ve got the answer to ‘do scooters have gears?’, it’s your turn to keep the maintenance steps in mind and share the facts with others. With the wind in your hair, a few buddies in tow, and the scooter surging forward with ease, every drive will be a dream!