Why do you sometimes step on empty when you buy a bicycle and ride it?

The seam between the chain disc and the crank is loose.

1. Observe the crankset: If the screws of the crankset are not fixed tightly, this phenomenon may occur, and the corresponding screws can be tightened.

2. Inspection chain: If there is a position in the chain that is too tight, it will cause the chain to not be deformed with the position of the chain, and the chain in this place is in a folded state.

3. Observe whether the chain is correctly stuck on the rear flying tooth when changing the rear flying speed shifter, if it is not stuck on the gear correctly, adjust the speed shifter to let the chain fall in the correct position.

The reason why the bicycle is sometimes empty when riding after buying is that the seam between the chain disc and the crank is very loose, and it is easy to slip after riding, and if you turn the crank by hand, you can also drive the chain disc; When people sit on it, the resistance increases, and it is easy to slip and step on the air.

The solution to the problem of stepping on the air: remove the crank with the chain disc as a whole, use a hammer to knock the joint between the chain disc and the crank, and then reinstall it to restore, the car will be fine, and there will be no slippage and empty situation.

There are several reasons for the recent problem of new cars, which is that the crankset and the new chain are not in place to run in, forming a jump chain. It is also estimated that there is a problem with the bottom bracket, but it is unlikely that you have a problem with the bottom bracket in a new car.

The phenomenon you are talking about is caused by the slippage of the flywheel on the rear wheel, and the jack in the flywheel (that is, the steel wire of the ejector pin) does not bounce up and causes the flywheel to spin. Maybe you don't understand the principle, go to the merchant to change the car (you can also change the flywheel).

The elasticity of the jacks in the flywheel is not good, or the oil in the jacks of the new car is too sticky to bounce up, since it is a new car to the car shop to solve.

Spinning bikes are OK, there is no resistance to empty pedaling, the effect will not be very good, you can go to the gym spinning bikes.

Variable speed bikes.

Often the situation you say arises.

There are several common causes.

First, the bicycle chain is loose, because the chain is not tight enough, there will be a smoothbore situation, and a section of the chain can be removed from the mascot.

The second is the transmission.

There is deformation, which can cause the chain to slip due to the uneven transmission baffle.

The third is that the transmission gear is uneven, and when the transmission gear has a tooth loss, the chain will slip off.

All of the above are the reasons for stepping on shorts.

This is a matter of quality, which means that this shifter bike is problematic, and you can directly go to a new one or choose to return it.

The transmission bike I just bought, when I ride it, it will be empty, what should I do with Oak Chun? If you just buy a variable speed bike, you will step on it when you ride it, so it means that there is no one. Mix the potatoes like Kai. Readjust it a bit.

When you buy it, you will assemble it yourself or the finished product, if you assemble it yourself, you have to take a good look at it, and if the cost of the problem is to find a file to talk about after-sales, so as not to have an accident, it will be too late.

Teach you a more scientific riding method, the premise is a variable speed bicycle, there is a smooth speed to ride on the flat road first, adjust to the appropriate gear, that is, it is not difficult to ride, and there will be no feeling of stepping on the air. Push as fast as you can in this gear, and if you feel like you're empty, shift gears until you find a gear that you can step on as quickly as possible without straining. Get used to this feeling of not straining and can exert force, and then increase the cadence as much as possible (the number of pedals per unit of time, generally counted by how many times per minute), generally start to reach 60 minutes, after exercise can be increased to 90, professional athletes, like those top players in the Tour de France, can reach more than 120 cadence.

It's not a sprint, it allows you to pass easily and quickly on most surfaces, and you won't get tired of riding long distances. Happy riding!

There may be several reasons for the lack of pedaling when riding a mountain bike:

1.Hub Question Loose Limb Question: If there is no sound when kicking in the air, it may be a problem with the hub, especially the non-bearing hub, the balls inside are dropped or worn badly, which can be solved by replacing the balls or replacing the hubs.

2.Bottom bracket problems: If there is an abnormal sound when kicking in the air, it may be a bottom bracket problem, including ball problems, damage to the bearings, or deformation of the bottom bracket caused by external forces, which can be solved by checking the balls, replacing the bearings, or replacing the bottom bracket.

3.Chain problems: If the chain is loose or stuck, it may also lead to hollowing, you can check the compatibility of the chain and the flexibility between the sections, such as finding the chain links that are too tight or too loose, and replacing or adjusting them.

4.Shifting problems: If the transmission is not adjusted correctly, it can also lead to a slip shot, you can check the position of the transmission and the length of the cable, and make the appropriate adjustments.

In short, when there is a hollowing phenomenon, you can check the above aspects first, find out the possible problems and repair or replace them accordingly. If you can't solve it on your own, it is recommended to seek help from a professional car shop or workshop.

During normal riding, the chain kicks out every time the rear flywheel stares at the tooth piece, which is relatively regular. This situation is generally after the hub problem is the majority, especially the non-bearing hub, the balls inside fall, or individual wear, this situation is more regular, often at a fixed speed, the wheel turns to a certain time will appear hollow; For normal riding, the chain has a hollowing phenomenon when it is on each tooth of the rear flywheel, and there is no regularity. Most of this situation is a central shaft problem, and there are various reasons, some are ball problems, some are bearing damage, or because of external forces, resulting in the deformation of the central shaft; During riding, there is a kick-in phenomenon when exerting force, especially in the high-speed disc of the rear cassette.

After ruling out the flywheel and bottom bracket problems, check the compatibility of the chain and the flexibility between the chain sections. The way to deal with it is to frame the car, turn the pedals, carefully observe whether there is a chain that will not be able to enter the rear flying tooth smoothly, and replace the chain after finding it, or the connecting pin of the attacker. Move the chain up and down with your hand section by section, see how the degree of freedom is, and find the chain that is too tight to replace.

- According to our detection method of wild walking pairs: the upper Paitan ramp and flat riding are empty, usually (most flywheel failures) are the rear wheel problems - loose chains, large wear, and misalignment.

It's not locked; The downhill kicks in the air, which may be caused by wear or displacement of the front flywheel. Solution: loose chain - the whole car is upside down, and the front and rear wheels adjust the chain (but the loose can not be too tight; Flywheel wear – replacement; Displacement or misalignment – twisting the axle.

Align the front and back clamps tightly.

Try Dusty Tung and it should be fine!

Generally, the chain or flywheel is seriously worn, and the chain must be long, and Zheng He's must be replaced. Shouting and staring.

If the crankset is not ground to a very obvious state, laugh Jane.

It's a ...... that won't slip

The shift of the transmission car has the phenomenon of stepping on the void, which may be caused by the lag of the transmission gear.

The expedient measure is not to slam on the pedal when changing gears, step on it for a half circle slightly, and then exert force after feeling the "click" chain change. In general, it is possible to avoid stepping on the air.

Of course, this requires a skilled rider to control, and it's best to ride back to the place where you bought the bike, request after-sales service, and let the technician help you adjust to the best.

From what you've reflected, there are two possibilities.

1 Shifting system, if there is a problem, overhaul it 10% likely 2 Bicycle gear has a problem 90% likely.

Just find someone who repairs the bicycle and let him take a look at it He will know if there is a problem with the gear, you are a brand car I bought it in early July, and I only started riding it at the end of August, and I only rode it for about 5 days The possibility you said is too small The gears are worn or broken and the chain is rusty These will not appear to be empty.

The shifting has not gotten better, so it is recommended to change the gear.

Did it hit? A similar situation can happen when it is deformed.

Reasons why the pedal flywheel of a pedal bike spins:

1. The ratchet inside the tower base or flywheel is broken, resulting in the flywheel idling and unable to drive the rear wheel to rotate 2. The spring steel wire on the ratchet falls off, causing the spines to fail to work 3. The teeth on the ratchet are worn to the limit (this possibility is the lowest) 4. The low temperature leads to the increase in the viscosity of the lubricating oil and sticks to the ratchet, so that the flywheel can not drive the rear wheel to rotate Note: The problem of ratchet ratchet can be solved by repairing and replacing the tower base and wheel group.

1. The chain may fall off. 2. The front or rear gears may be slipping.

It may be that this wheel in the middle of the back circle is frozen. Try pouring some hot water.