The clutch of a motorcycle believes that everyone who rides a bicycle is not unfamiliar. It is a control mechanism that you must master before becoming a qualified knight, But to say its structure, perhaps most knights can't accurately say it.  

 

Clutches, commonly known as Hong Kong's clutches, come from English Clutch. Taiwanese dialects are often referred to as nicknames for Japanese or Japanese. They are devices that transfer the engine power of a car or other power machinery to the axle.

 

Clutch basics

 

As the name suggests, it is the role of separation and closure. That is to say, the engine and the wheel drive are separated. That is to say, when you step on the clutch, the engine's transmission is disconnected from the wheel, and the engine's power is not transmitted to the wheel to drive the motorcycle.

 

When you release the clutch, the engine's transmission will be connected to the wheel and transmitted to the wheel, and the car will naturally move. So why separate the power from the wheels? Because different speeds of the engine have to be shifted, this problem is more complicated. I will talk about it inexplicably. In short, the transmissions of different speed engines have to transmit different speeds to the wheels. At this time, slow gears and wheels are needed. Separately, use high-speed gears to engage the wheels. This is a combination of clutches.

 

There are various forms of clutching, the most common of which is the "multi-plate clutch" of motorcycles. This clutch type is also used in various motor sports. Multi-plate clutches are used in these speed machines. The main reason for occupying a place is that it has a smaller diameter under the same friction, which makes the overall quality of the outer casing smaller, so the moment of inertia is smaller, which helps these speed machines to accelerate faster. In addition, it is more space-saving, so it is undoubtedly the best choice for a motorcycle with a precision structure.

 

The clutch on the motorcycle is not complicated, mainly including: 1. platen screw; 3. spring; 4. clutch plate (Pressure plate); 8. friction plate (Friction plate); 9. iron plate (Steel plate) ;13. Clutch drum (driven wheel - inner housing); 15. Clutch drum (driver - Outer housing).

 

Clutch dry and wet VS wet away

 

Among them, the clutch is also separated from dry and wet, the biggest difference is whether the "clutch" is immersed in the oil to work. From the appearance alone, it is difficult to judge whether an engine uses "dry" or "wet off", because in order to reduce noise, the original production cars generally use the Clutch Cover to wrap the entire clutch.

 

So you have to use the "ears" to make judgments. If a car that is idling on your side makes a "clam" noise, it may not be broken, but it is only "dry". In addition to the "contribution" in terms of noise, the use of dry-off models, because the lack of oil cooling is often faster than wet separation, so the replacement of Clutch Pack on these models will undoubtedly become regular maintenance content. one. In addition, because of the lack of oil as an intermediate medium, the control is relatively difficult to control relative to wetness, which is obviously very challenging for novices.

 

Slip clutch

 

The power of the motorcycle engine is transmitted to the rear wheels: crankshaft - clutch - gearbox - terminal drive system (chain / drive shaft) - rear wheel. This includes the driving force and also includes the (engine) braking force. In the case of sudden deceleration, we usually take the brakes and reduce the gears. If you drop 2-3 gears at a time, the excessive engine braking force may cause the rear wheel speed to suddenly drop, the wheels sway, jump and even lose. Ground force. In addition, you may also pay the price of damage to the gearbox and will be life-threatening. In order to avoid such a tragedy, "Slipper Clutch" came into being. Its function is to briefly cut the connection between the engine and the gearbox until the engine speed matches the actual speed and then resume the power engagement.

 

The biggest difference between sliding clutch and normal clutch is the clutch plate and the clutch hub. There are several sets of “slopes” added between the interacting components.

 

When accelerating, the clutch drum (driven wheel) is normally combined with the clutch plate, and the clutch plate is compacted, and the power is effectively transmitted to the gearbox.

 

In the case of rapid deceleration and continuous downshift, when the wheel speed remains unchanged, the lower gear suddenly accelerates the spindle speed, and the clutch drum (driven wheel) connected to it suddenly accelerates. The platen, the clutch piece is temporarily separated, and the connection between the engine and the gearbox is cut off.

 

Otherwise, the powerful engine braking force will quickly reduce the speed of the gears in the gearbox, causing the wheel speed of the wheel to be forced and quickly reduced. Since the inertia is still the same, the speed is not significantly reduced, and the rapidly decreasing wheel speed will cause the tire to lose grip.

 

 

excellent

 

1. Reduce the loss of the gearbox during the steep downshift;

 

2. Reduce the risk of losing the grip on the rear wheel when the downshift is reached;

 

3. Reduce the pressure of the shock absorber during rapid deceleration.

 

inferior

 

1. The structure is complex;

 

2. The price is expensive (do not calculate the decompression of the tire and gearbox in use).

 

 

Clutch daily maintenance

 

1. Set the clutch operating handle correctly, and keep the free travel space of 10-20mm at the farthest end of the handle;

 

2. Correctly maintain the clutch cable (clean the exposed steel cable, drip the oil into the cable cavity of the cable), keep the cable rebound and rebound, and replace the new cable when the rebound fails;

 

3. Try to use half-clutch as little as possible;

 

4, try not to accelerate or slam the clutch.