K7 Mtb Bicycle Cassette 11V 9V 10V 8V 12V Speed Road Bike Freewheel Sprocket 11-40/42/46/50/52T Cycling Parts

About VIARON

VIARON is a company specialized on the bicycle parts and accessories. We manufacture all kinds of bicycle parts by ourselves for more than a decade. We also do OEM business for many famous international brands. Every step of the process is handled strictly by us. We only use top quality materials. We assembled and test the products rigorously for quality and reliability before shipping them to customers all over the world. If you want to do make bulk purchase or you want to do OEM orders, please feel free to contact us anytime, we will give you a very reasonable discount and guarantee the quality control.

NOTES

1. Please allow 1-3 cm measuring deviation due to manual measurement.
2. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!

Questions and answers about bicycle jump chains:

1. Chain skipping is related to four factors: flywheel, chain, chainring and rear derailleur

2. The main reason for the wear and tear of the skipping chain is that the wear and tear of each part is different.

3. The tooth chain itself must be compatible, the products of different manufacturers may not be perfectly compatible, it is best to use the original accessories

4. The function of the tension screw of the rear dial: adjust the distance between the guide wheel and the flywheel of the rear dial, thereby affecting the number of sections of the chain hanging on the flywheel

Second, the method of judging the degree of wear:

1. Chain: The chain is the easiest to wear, and the measurement method is relatively simple. Just buy a chain caliper to measure whether it is scrapped.

2. Flywheel: The most intuitive way to judge the wear degree of the flywheel is to see whether the gears are sharpened and curled. In other words, if the flywheel is still jumping after changing the new chain, it also means that the flywheel may be worn out.

3. Crankset: Similar to the flywheel judgment method

4. Rear derailleur: Too few chain links on the flywheel will easily cause chain skipping.

If it is easy to jump the chain on the small flywheel after replacing the rear derailleur, then there may be a possibility that the tension screw of the rear derailleur is not adjusted properly. At this time, you can adjust the tension screw to make the guide pulley closer to the largest flywheel (so that the chain is hung Will be more) Generally, the distance between the guide wheel and the maximum flywheel is 5mm.

3. Problem solving:

1. If it is worn, it is good to replace the worn part directly (the original factory is the best), it must be noted here that the wear degree of each part should be roughly matched, and the difference should not be too large. For example, if the chain and flywheel are both worn out, then just changing the chain or flywheel will not solve the problem.

2. If it is the problem of the rear derailleur, just adjust the tension screw. If the adjustment is useless, then check whether the rear derailleur is aging or the parts are missing.