How To Put Bike Chain Back On Derailleur? (Perfect answer)

How does the rear derailleur work on a bike?

  • Rear derailleur deals with all the slack, no matter which sprockets the chains are in. How the rear derailleur works with chains rely on the cables and pulleys. The upper gives direction for the chain to fall right on the sprocket. Meanwhile, the lower pulley will create tension for the lower parts of the chains.

Can you remove rear derailleur without breaking chain?

If the derailleur is riveted closed, you won’t be able to take it off the bike without breaking the chain or destroying the derailleur. If you’re going to replace it, then you’ll need to break the chain anyway to put the new derailleur on.

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