New car shake

Any equipment has a running-in period - normal driving period - accelerated wear period of 3 processes. In the running-in period, due to the contact between the parts of the motorcycle, the stress inside the parts changes, the wear is generated by friction, and the parts are not adapted to the harmony, there is always this process.

Jitter in this process, if it is a slight phenomenon, and disappear in a short time, should be considered normal.

Running jitter

During the normal driving period, the motorcycle enters the performance consumption stage, and there may be a variety of failures, resulting in the jitter of the driving period.

Clutch damage: the meshing clearance of the primary transmission gear is too large; The tooth shape of the gear is damaged; The clearance between the round convex block on the drive plate and the cut on the clutch housing is too large; Rubber shock pad damaged; Buffer spring length is not uniform; There is a gap between the teeth on the clutch housing.

Loose transmission: spindle and auxiliary shaft are not parallel; Gear or spline shaft holes are seriously worn; The bearing is badly worn or damaged.

The chain becomes longer and the sprocket shape becomes smaller: the wheelbase error is larger when the new car is assembled, resulting in the chain becoming relatively longer; Due to long-term jitter impact, the driving sprocket and driven sprocket wear seriously, and the chain is further stretched.

Wheel swing: wheel bearing wear, clearance is too large; Spokes are loose, rims are distorted; Rear wheel bearing is seriously worn; Axle fastening nut loose.

Wheel deviation: the front and rear wheels are not installed on a plane; Front fork, rear fork and frame distortion; The shock absorber is unbalanced.

Abnormal shake in the direction: the thrust bearing clearance on the front fork riser is too large or the number of steel balls is not enough; The front shock absorber oil is insufficient or the shock absorber piston and other parts are worn; Wheel radial runout is too large, tire pressure is too high or too low; The inner tube of the front fork is bent and deformed.

Fuel supply device blockage: fuel switch blockage; Excessive fuel filter accumulation; Carburetor float chamber float trap.

In addition to the above reasons, improper operation can also lead to the shaking of the motorcycle during the driving period.

It is worth mentioning that to figure out the difference between motorcycle vibration and vibration concept, motorcycle vibration is determined by the characteristics of the motorcycle itself, and the design, manufacturing and assembly closely related, motorcycle shaking is caused by motorcycle assembly, especially operation and use, vibration and vibration can affect the motorcycle ride comfort and safety, the former is inherent, Unavoidable, the latter can be mitigated by proper use and maintenance.

Handlebar flutter

There are many reasons for the motorcycle handlebar jitter, respectively, to check whether the front tire pressure is insufficient, whether the tire is bulging, whether the tire and the rim are deformed or improperly installed.

If there is a thick patch on the inner tube, whether the front wheel bearing is damaged, whether the front wheel shaft screw is not tightened, whether the front shock absorber and the direction column are wrong, whether the shock absorber is too soft, etc. Any of these conditions can cause the handlebars to shake. At this time, try to go to the repair shop to find professionals to check and repair, it is best not to repair yourself, in case of accidents on the road.

Locomotive jitter

There are many causes of front shake, such as insufficient tire pressure, tire bulge, patch with inner tube is too thick, rim deformation out of round, wheel bearing damage, front shaker problems, etc., can cause front shake.

If it is shock absorption or direction column deformation, it may cause driving deviation. Front shake very affect driving, a little inattentive will cause unnecessary accidents, it is best to find a professional master repair and then driving.

There is a feeling of frustration shaking

1, only around 40 there is a sense of frustration, the carburetor is more likely to have little to do with the ignition parts, change the spark plug feeling better may only be an accidental phenomenon, you can also check whether the spark plug cap is not good.

2, the spark plug has carbon accumulation, resulting in excessive resistance between the electrodes, can not be continuously ignited. (Return to normal after carbon deposition falls off)

3, high pressure cap or igniter failure, caused by the ignition can not be continuous, if not replaced, will appear again.

4, carburetor in the medium speed when the oil supply is not good may occur this situation, you can carefully adjust the mixing ratio and oil needle, if it is the country three cars, each prone to this situation, if the situation is serious, you can adjust the oil needle to a high style.

5, if the national three carburetor can not adjust the oil needle, you can add a thin pad under the oil needle to try.

6, some are caused by the carburetor itself, if not serious can be ignored.

It jitter at low speeds

When the motorcycle starts running at low speed or riding at low speed, the motorcycle body will shake seriously, which is mainly caused by the uncoordinated vibration of a certain operating part of the motorcycle. When the uncoordinated vibration frequency and amplitude are the same as the vibration frequency and amplitude of the motorcycle body, resonance will occur, and the amplitude of the motorcycle body will be multiplied. So that the motorcycle has serious vibration, that is, shake.

When the speed is high, there will be no resonance, and no jitter will occur. Generally, the fault is in the belt pulley of the motorcycle, should be picked up whether the belt pulley wear too much, whether there is too much dust, too much dust will make the belt pulley out of round, will also cause vibration.

It may also be that the belt pulley shoe is seriously worn, the spring is broken, and the shoe is not well matched, then it can be gently polished to make it fit well and move freely, if the spring is broken, you need to replace the new spring, because if the spring is broken or stuck, the shoe activity is not controlled, will produce uncoordinated movement, it will cause serious shaking of the motorcycle. This happens mostly on scooters.

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