How to replace bicycle cassette

how to replace bicycle cassette

How to replace your cassette

Nov 30, Switch your gears over with GCN's guide to removing and replacing your here to subscribe to GCN: might need to. 5 Answers5. Active Oldest Votes. Without experience, or obvious damage, a cassette gauge like the one from Rohloff, or mileage are your best options for deciding when to replace a cassette. For me, a good rule of thumb has been: 10 chains = 2 cassettes = 1 set chain rings. That is, I change my chain every km.

High-mileage riders might replace their cassette after every season, while casssette riders might replace it every few years. It can also depend on how well you take care of your bikeand specifically your chain; a grimy, gritty chain or an old, stretched-out chain can wear down jow cassette faster.

Detecting early or moderate what is rope made out of will take a trained eye, but severe wear will be pretty noticeable, especially when compared to the teeth on a new cog.

A tooth on a newer cog will be flat on top, while a very worn tooth will be rather pointy. With the right tools in hand, replacing a cassette is a straightforward and easy task.

Below, we cover what you need to get the job done and how to do it. Chain whip tool : Alternatively, you can use cassette pliers. Some are complete with a handle, and some come with a guide pin to help secure it in place as you go to remove it. Adjustable wrench : I f needed, based on lockring tool type. New cassette: To keep it easy, simply pick up a new version of your current cassette. New chain : Chains and cassettes wear down together.

Check out our tutorial here. And make sure your cassette is from the how to apply for aetna insurance manufacturer as that of your derailleur. First, remove your rear wheel from the bike. Next, remove the quick release skewer. Place the lockring tool onto the lockring at the end. Using the chain whip tool to bicycl the cassette in place, turn the lockring tool counterclockwise to unscrew and remove the lockring.

Now you can remove the old cassette. Grab your new cassette. Note the spline positions on the freehub and install each cog, along hpw any spacers, so that they align with the corresponding splines and with the inscribed side facing out showing the tooth count.

Reinstall the skewer, then install your rear wheel onto your bike, and test out the new cassette. Bikes and Gear. United States. Type keyword s to search. Today's Top Stories. Trevor Raab. Tools you'll need are are a lockring tool and chain whip Trevor Raab. Related Stories.

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What Youll Need

This article was co-authored by Ikaika Cox. This article has been viewed , times. The rear cassette is a set of concentric gear rings attached to your back wheel. Each ring is a gear on your bike, and the chain, which connects to the pedals, turns the cassette to power the bike. Over time, the teeth on the gears start to wear down, making the connection to the chain weaker and costing you valuable power.

At worst, this can lead to slipped chains, which prevent you from pedaling at all until fixed. To change a rear cassette on your bike wheel, start by removing the rear wheel from the bike. Next, remove the skewer, which is the rod running through the center of the wheel, and insert a lockring removal tool into the center of the cassette.

Then, clamp an adjustable wrench on your lockring removal tool and turn it counter-clockwise to remove the lockring, followed by the cassette. Afterwards, slide the new cassette in place and tighten the locking nut with the wrench.

Finally, refit the skewer and put the wheel back on the bike. To learn more, including how to clean the hub on the wheel before putting on the new cassette, read on! Did this summary help you? Yes No. Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue. No account yet? Create an account. Edit this Article. We use cookies to make wikiHow great.

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Tips and Warnings. Things You'll Need. Related Articles. Article Summary. Part 1 of Remove the wheel from the bike. This is easily done by undoing the skewer or the nuts from the axle, undoing the quick release of the brake and removing the wheel from the bike. Take the wheel off and set the bike aside.

If you're struggling to remove it, shift the front gear into the smallest ring. Find where the chain threads through two small wheels on the derailleur arm the shifting mechanism on your back wheel , and push to put slack in the chain.

Inspect the cassette for wear and damage and confirm a cassette replacement is necessary. This is also a good time to give the to check for axle bearings for wear and proper lubrication. If the axle moves, the bearing cones need to be adjusted and you may need to replace the bearings in the axle.

A bike shop can do this for you if you so desire. Signs you need a new cassette include: Skipped or slipping chain while riding. Issues shifting Note: Check that your derailleurs are properly adjusted before changing the cassette Visibly worn teeth points are lower are rounder on some gears than others. Cracked, broken, or warped gears. Remove the skewer.

Put the wheel on a flat surface with easy access to the cassette and remove the skewer, which is the long rod running through the center of the wheel. More often than not, the skewer and mating bolt on the other end can be easily screwed off by hand.

Place your lockring removal tool into the center of the cassette. Replace the skewer with a lock ring removal tool. It will have a grooved ring on the end that locks it into the cassette. This will be your pressure point to unscrew the cassette. Some older lock-rings don't have attached skewers. They are meant to replace the bolts on your own skewer, then used like normal.

Unscrew the normal ends and put the lockring removal tool on your old skewer to use. Wrap the chain whip around the largest sprocket in a counter-clockwise direction. Choose the largest sprocket you can get the chain around. The chain whip keeps the cassette from turning while you unscrew it. It is simply a long handle with about 6 to 8 inches 15 to 20 cm of bike chain at the end, which allows it to lock the cassette in place.

Wrap as much of the chain as you can around one of the largest gears, going counter-clockwise. To loosen the bolt later you will need to turn the lockring counter-clockwise, so the chain whip will pull the the cassette clockwise -- this is the opposing pressure to keep everything steady.

Alternatively, use a length of chain instead. Clamp a large adjustable wrench on your lockring removal tool. Use the wrench to hold the chain whip in place. If you're just starting out, this might be easier with two people.

Tighten the adjustable wrench around the lockring tool so that you can get a lot of power on it. Make sure the tool is firmly jammed in the cassette. This is easily recognizable by the tooth lock nut on the cassette. Holding the chain whip in place, turn the wrench counter-clockwise to release the lock-ring. This nut has a regular thread that needs to be rotated in an counterclockwise direction.

It will probably take some force, and may make a loud grinding noise, which sounds like popcorn, as it is removed. This is because of the locking teeth. While you don't want to break anything, know that this takes a fair amount of force, especially if never done before. All this takes off is the lock ring, the small, usually silver piece that prevents the cassette from moving.

Set the lock ring aside in a careful place -- you definitely do not want to lose these! Slide the cassette off after removing the lock ring. Usually, it consists of a few sprockets, spacers, and a large set of sprockets riveted together. Keep everything in the same order you took it out in as a guide for adding your new cassette.

There may also be a plastic chain guard between your cassette and the spokes of the wheel -- it can be kept or discarded.

You may need to use a thin object to lightly pry a few gears off. Clean the hub of the bike with an old rag and some light cleaning fluid. You rarely get to this area when cleaning, so take the time to get the gunk out now. Use an old rag and some rubbing alcohol, gentle dish soap and warm water, or Simple Green. Part 2 of Replace the cassette with the same gear ratio. First, count the number of gears.

Then, count the number of teeth on the smallest gear, then the largest one. Put these numbers together to get your ratio. For example, an should be replaced with another You can find the tooth counts stamped on the sprockets. A part number or name would be useful as well. You can easily bring your cassette into a bike shop as well to get a near identical cassette. Replace the cassette with a different ratio. Most cassettes are interchangeable within brands for a certain number of gears.

For example, Shimano sprockets gears can be mixed with other Shimano sprockets. Even older sprockets can be used with some adjustments. To get sprockets, buy them separately or as a whole unit. Cassettes can be disassembled by removing the pins holding them together, the pins have no other purpose than to make assembly easier.

Then just stack together the cassette with the gear ratios you want. Some sprocket tooth counts are less common than others, keep that in mind when buying as you might end up with sprockets identical to what you've already got.

It's tricky to mix and match gears, so it's best not to try unless you're experienced. Additionally, compatibility between gears and cassettes can vary. Similarly, Campagnolo freehub bodies are only compatible with Campagnolo cassettes.

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