On the motors with low starting torque, the type of the clutch to be u...
**Centrifugal Clutch**
A centrifugal clutch is the type of clutch that should be used on motors with low starting torque. This type of clutch operates based on centrifugal force and is commonly used in small engines, such as those found in chainsaws, lawn mowers, and go-karts.
**Working Principle**
The centrifugal clutch consists of two main components: the clutch shoes and the clutch drum. The clutch shoes are connected to the engine's crankshaft and are spring-loaded. The clutch drum is connected to the driven shaft of the motor.
When the engine is idling or running at low speeds, the clutch shoes are in their relaxed position and do not make contact with the clutch drum. As the engine speed increases, the centrifugal force acting on the clutch shoes overcomes the spring tension, causing them to move outward and make contact with the clutch drum.
**Engagement and Disengagement**
When the clutch shoes make contact with the clutch drum, they grip it tightly, transferring the rotational power from the engine to the driven shaft. This engagement allows the motor to start operating and gradually increase its speed.
On the other hand, when the engine speed decreases, the centrifugal force acting on the clutch shoes decreases as well. The spring tension becomes dominant, causing the clutch shoes to move inward and disengage from the clutch drum. This disengagement allows the motor to stop running without causing excessive wear or damage to the clutch components.
**Advantages of Centrifugal Clutch**
The centrifugal clutch offers several advantages for motors with low starting torque:
1. Smooth Engagement: The clutch engages gradually, preventing sudden jolts or jerks during the starting process.
2. Automatic Operation: The clutch engages and disengages automatically based on the engine speed, eliminating the need for manual control.
3. Overload Protection: If the motor encounters a sudden load increase or jam, the clutch slips to prevent damage to the motor or driven components.
4. Cost-Effective: Centrifugal clutches are relatively simple and inexpensive compared to other types of clutches.
In conclusion, the centrifugal clutch is the most suitable type of clutch for motors with low starting torque. Its automatic engagement and disengagement based on engine speed make it a convenient and efficient choice for various small engine applications.