![New bike: drivetrain noise isn't smooth and chain catches in reverse. It also makes the same sound when pedaling forward but the chain doesn't catch. Is there something wrong with the rear New bike: drivetrain noise isn't smooth and chain catches in reverse. It also makes the same sound when pedaling forward but the chain doesn't catch. Is there something wrong with the rear](https://external-preview.redd.it/NRtIeCqjzs9agexbVixsdiNcTjp9BR8tBz3HMDVunhE.png?format=pjpg&auto=webp&s=c15d3b7de406c4e08ff1da52f0f1c333113da782)
New bike: drivetrain noise isn't smooth and chain catches in reverse. It also makes the same sound when pedaling forward but the chain doesn't catch. Is there something wrong with the rear
![Ochain Active Spider Test - The ultimate upgrade for your bike's suspension? | ENDURO Mountainbike Magazine Ochain Active Spider Test - The ultimate upgrade for your bike's suspension? | ENDURO Mountainbike Magazine](https://s14761.pcdn.co/wp-content/uploads/2020/06/ochain-active-spider-test-review-enduro2.jpg)
Ochain Active Spider Test - The ultimate upgrade for your bike's suspension? | ENDURO Mountainbike Magazine
![Bike makes knocking noise only when pedaling. The cassette cogs have some grooves on them. Is this normal or the cassette is defective? : r/bikewrench Bike makes knocking noise only when pedaling. The cassette cogs have some grooves on them. Is this normal or the cassette is defective? : r/bikewrench](https://preview.redd.it/kzrb6cvyqmc51.jpg?auto=webp&s=1bcfd60e1b4edb4e0f8fe9d3eb05b71555b3a547)
Bike makes knocking noise only when pedaling. The cassette cogs have some grooves on them. Is this normal or the cassette is defective? : r/bikewrench
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