FAQ: How To Adjust Derailleur Mountain Bike?

How do I adjust the rear derailleur on my bike?

Hop off your bike and do this: Shift your chain into the biggest chainring and smallest cog, then loosen the cable clamp bolt (where the cable attaches to the derailleur ). Leave the derailleur in the smallest cog and adjust the high limit screw. Push the derailleur in the largest cog and adjust the low limit screw.

Which derailleur do you adjust first?

Do the rear first. You won’t be able to pedal the drivetrain in any gear other than the smallest cog otherwise. The adjustment of the front will depend on being able to get the chain not to rub on the front der cage as you run the chain across the cassette in back.

Why does my chain slip when I pedal hard?

Most of the time, a skipping chain is caused by cable stretch. In the first half dozen rides on a new bike your shift cables stretch the most. They can also stretch over time as you ride. Hippley explains, “It takes cable tension to open a derailleur, which shifts your chain between gears.

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Why is my derailleur hitting my spokes?

It is possibly bent/tweaked and the only way to know for sure is to put an adjustment/alignment tool on it and check. If it is it is generally and easy tweak to put it back in alignment, then realign/adjust your rear derailleur.

How do you fix a front derailleur not moving?

Pull the cable as tight as possible with your fingers and retighten the anchor bolt. Try to shift up to the larger chainring. If the chain won’t shift or feels sluggish, twist the inline barrel adjuster further up the cable (turn it anti-clockwise) to increase the tension and try again.

Is front derailleur needed?

Front mech is not necessary to climb slopes. You can swap out the rear cassette for even larger one if you need lower gearing. With 10 speed cassettes, you can easily have a rear cog with more teeth than the crank.

How often should I change my bike chain?

To avoid this accelerated wear of your cassette and chainrings, a general rule of thumb is to replace your bike’s chain every 2,000 miles. Mind you, this is just a starting point. No two chains will wear at exactly the same rate because no two riders treat their chains the same.

Why does my chain go slack when I stop pedaling?

If your chain is getting slack on top when you stop pedalling or backpedal, then the problem is in your freehub (or freewheel, whichever you have ), a dirty freehub will cause all the problems you’ve listed, even on a brand new bike.

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How do I know if my bike chain is too loose?

Check your chain out. It should be tight enough that it only allows you to move it up and down about one inch. If it is sagging or much looser than that, you need to tighten that chain up. Chains often loosen when a bike does not have a derailleur.

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