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Questions tagged [cassette]

A cluster of sprockets, commonly 5 to 11 of them, attached to a freehub on the rear wheel.

21
votes
5answers
50k views

How to tell when to replace cassette?

How do you tell when it's time to replace a cassette? Are there any specific wear patterns on the teeth to watch for or symptoms specific to a worn-out cassette?
9
votes
4answers
21k views

New Chain causing skipping on cassette - will this work itself out or is it unsafe?

I just installed a new chain on my 2002 Trek 2200 Road Bike. The old chain was a Shimano 9 speed that I installed 18 months and about 5000 miles ago. It had stretched modestly and was full of winter ...
7
votes
3answers
20k views

Can you use a 8 speed Shimano shifter with a 7 speed cassette?

I want to use an 8-speed shifter with a 7-speed cassette. I saw this question, but I am unsure if this would work, since I believe the spacing is the same between a 7- and 8-speed, but the length is ...
11
votes
2answers
9k views

if I replace chainset and chain should I replace back cassette as well?

I am replacing my chainset and chain, as its totaly worn and causing the chain to jump off when I pedal. The cassette is fairly worn too, but is not causing any problems. If I buy a new chain and ...
4
votes
1answer
1k views

How to select cog for emergency single speed conversion with a broken derailleur

I broke the rear derailleur on my surly karate monkey recently. I had the bike setup 2x9. I decided to try and get home by converting to single speed via trail side repair (made easier by the ...
2
votes
3answers
2k views

Chain really quite stretched, should I change cassette at the same time?

I measured my chain last night - 10 links were 25.8-25.9 cm. So I ordered a new one, tools and spare link pins (Shimano 8-speed HG). I'm thinking this amount of wear might explain why my least ...
41
votes
10answers
81k views

Why are higher-end freewheels so much louder when coasting?

I tend to ride relatively modest gear (Tiagra/Ultegra), but when I'm riding near higher-end bikes, I sometimes notice that the clicking sound that comes from their cassette/free-wheel while coasting ...
18
votes
3answers
34k views

Do cassettes and chains need to be replaced at the same time?

Someone recently told me that if I replace my cassette I need to replace my chain (and vice versa) so that they wear evenly. Is this true? And, can anyone elaborate on the reasoning for this a bit ...
12
votes
4answers
12k views

How to prevent freehub body damage?

I feel like this is poor design. I have two wheelsets that are less than a year old which have damaged freehub bodys due to cogs digging in to the splines on the freehub. It's so bad that I can't ...
9
votes
6answers
56k views

Can a road bike's rear derailleur be used for either a 9 speed cassette or 10 speed cassette?

I currently have a 9 speed 11-25T cassette on my road bike. I'm thinking about switching to a different cassette with more teeth on the climbing gear. The cassette I'm currently look at is a Shimano ...
7
votes
4answers
30k views

Can I fit a cassette with a larger range with my Shimano Tiagra 10-speed ( GS-4600) derailleur?

I'm currently running a 2x10 shimano tiagra 10-speed drivetrain with a 50/34 compact crankset, a 12-30 rear cassette, and a Shimano Tiagra GS-4600 derailleur (that's medium cage aka road long cage) on ...
4
votes
2answers
4k views

Can I just fit a cassette with more gears with the same derailleur?

I've got a Boardman Road Sport which I use for commuting and doing reasonable length rides during the week etc. I have Shimano Claris as my rear derailleur and so is some of my groupset. I would like ...
4
votes
3answers
401 views

Rear hub freewheel and casette

I am having some issues with my drive trainsystem. I have changed my chain after quite a while (shame on me) with a new one, that i sized exactly on the same number of links as the old one. When ...
3
votes
3answers
3k views

Chain skipping on MTB

I've had my Trek 3900 for about a year now, and I replaced the chain about 3 months ago, but otherwise it's running with the same parts it came with (not counting tubes and tires). I had to replace ...
1
vote
2answers
1k views

Upgrade my Rear Cassette from 12/25t to 11/28t

I have a Specialized Secteur 8-speed road bike with a Shimano HG850 12/25t rear cassette running on a KMX Z type narrow chain my crankset is a 52/42/30, I have done about 2,000 miles so it's probably ...
1
vote
2answers
176 views

Rear Cassette worn + needs replacing - what other components to replace?

I have picked up a bike (Specialized Allez) recently that has a very worn cassette from not replacing the chain for an extended period of time. Therefore am looking to change it. I was wondering what ...
32
votes
9answers
17k views

Do I really have to replace the cassette when I replace the chain, or is this a scam?

My chain broke so I brought the bike in and the guy told me "Well you don't have the old chain, so we have to replace the cassette also. They go together. If you don't replace the cassette then the ...
16
votes
3answers
64k views

What is the meaning of 11-32 cassette and 12-25 cassette?

I'm willing to buy a 2015 Shimano 105 groupset and i have got 2 options in choosing the cassette, the first is 11-32 and the other is 12-25. I have no idea what these numbers indicate and which one ...
9
votes
2answers
14k views

Upgrading wheels on a vintage Peugeot Frame

OK so I have a Peugeot Galibier bike that consists of a Reynolds 301 steel frame. A while back the original derailer gave up the ghost while riding, bending the rear-wheel spokes in the process. I ...
4
votes
3answers
12k views

Shimano 105 10 and 11 speed compatibility

Currently I have on my bike the Shimano 105 system (2 years old) with 10 speed cassette. Currently I am buying a new wheelset (Fulcrum Racing zero) made for Shimano 11 cassette. I was told that I can ...
13
votes
1answer
1k views

Do I need to change my cassette if I can't see any wear?

I bought a new road bike with Campag Athena 11 speed in March last year. To the end of Jan it had covered 9000km. In all that time I hadn't changed the chain because I don't have the Campag tool, and ...
6
votes
2answers
5k views

Is it practical to replace two sprockets on a cassette?

My bike has 53/39T chainrings and a cassette with 12,13,14,15,17,19,21,23,25 sprockets, but I like to ride up steep mountain roads. Is it possible (without great expense) to replace two sprockets to ...
2
votes
2answers
24k views

Difference between Shimano HG51 8-Speed Cassette and Shimano HG50 8-Speed Cassette

Can anyone tell me the difference between Shimano HG51 and HG50 8-Speed Cassettes? I can't find any information online about this so was hoping someone might be able to help me. I am looking to ...
7
votes
4answers
15k views

How much distance can I put on drivetrain components?

I figure the jockey wheels on my derailer will last nearly forever, but what about the rest: cassette, chainrings, and chain? How many miles, kilometers, or furlongs do they normally last? I know ...
5
votes
1answer
153 views

Can I replace a 9spd freehub with a 7spd one?

On my commute this morning I established that my freehub needs replacing. There's obviously something wrong with the ratchet mechanism, because it intermittently refuses to engage. My existing setup ...
5
votes
4answers
824 views

Downgearing with a road triple

My mother is trying to get back on her bike after years of knee problems + surgery, which so far has gone ok, but she has had some trouble with climbing hills. She's thinking that she should try to ...
5
votes
1answer
12k views

Misadjusted B-screw: symptoms?

What are the typical symptoms of incorrectly adjusted B-screw in the rear derailleur? How does it manifest itself when shifting? Obviously, if the cage pulley interferes with the cog, the problem is ...
4
votes
8answers
4k views

Fitting a 9-speed 11-50T cassette on MTB: which derailleur?

I'm trying to understand if its possible to fit a 9-speed 11-50T cassette (found one on Ali) on my MTB. The plan is to go 1×9. The problem is that I can't seem to understand the if a specific ...
4
votes
1answer
21k views

What Are the Widths of Shimano 8, 9, and 10 Speed Cassettes?

I was hoping that someone could provide me with the precise Shimano road-bike 8, 9, and 10 speed sizes for the following: Cassette Spacer Width Cog/Tooth Width Maximum Chain Width
3
votes
3answers
656 views

Can I put a lower geared cassette on my bike?

I bought a bike recently that has a 34 front 28 rear gear ratio. It is an Elfama E2500, which is a Korean brand I believe. It has a Shimano Claris (which is rated for up to 32 teeth) rear derailleur ...
3
votes
1answer
224 views

Upgrade from 7-speed SunRace to 10 speed Deore: can I use the same wheel?

I got a whole Shimano Deore groupset 3 x 10 and would like to upgrade my good old Trek bike. Do I need to change the whole rear wheel now? It has currently Sunrace Megadrive Lock Ring Type cassette or ...
3
votes
1answer
290 views

Campagnolo Record C9 / Shimano CS-HG200-9 incompatibility

I drive cheap Shimano cassettes together with Campagnolo Record C9 chains. Yesterday I installed a new C9 and a CS-HG200-9. But the chain sort of slips over the sprockets, not unlike really worn parts,...
3
votes
4answers
991 views

2- or 3-speed fixie [duplicate]

I am young...and dumb... so I want to ride fixed gear as all the other cool guys do. But without the trouble of having too high of a gear when starting away from a traffic light. So is it possible to ...
3
votes
4answers
841 views

How to get a lower gearing

My trusty old CF racer was stolen the other day, and I'm looking for a replacement. I saw this bike at PlanetX and was intrigued. It's a full carbon bike with (last years) Ultegra components for a ...
3
votes
1answer
667 views

Is this an unsuitable cassette lockring tool?

I can't get my lockring tool to fit my cassette's lockring. The tool is about 1mm i diameter bigger than the lockring, although they have "hills and valleys" that line up. Here's the lockring: Here'...
3
votes
1answer
162 views

If chain/ BB/ casette are dead can chainrings and derailleurs still be OK?

I bought a brand new bike last May (2015 Brodie Elan) and proceeded to put 11,000km on it by November (cross Canada ride plus some commuting). Around the 11,000km mark I brought it back to the shop ...
3
votes
4answers
11k views

Replacing Crankset. Do I need to replace chain? Then do I need to replace cassette?

Over the past year, my road bike's crankset has gotten pretty bent up and out of wack. Not due to abuse, just wear and tear I guess. It's pretty bent and has a nice wobble that I can see as I look ...
2
votes
1answer
121 views

Can I Upgrade shimono Ultegra 9 speed 12-27 cassette

I have a 2009 Trek 7.7 FX with Ultegra 12-27T cassette, 50/39/30 Front triple. I want to upgrade the rear cassette to give better hill climbing gears. Can I fit an 11-34 Rear cassette and if so what ...
2
votes
2answers
2k views

What might be causing rear casette to creak?

So I'm a bike noob in terms that my bike is certainly new, and since I bought it I've had problems with it. So this time, I've figured where the problem comes from, it's the rear casette exactly, ...
2
votes
1answer
2k views

Best Cassette Cog Material

I am replacing my smallest cassette cog for the 3rd time. I have been using Harris Cyclery's Aluminum Cog Crupi's Chromoly Cog is about 3 times as expensive. Is that still worth it? Can anyone ...
1
vote
3answers
722 views

I just replaced my cassette, do I need replace the 2 month old chain?

I replaced both my cassette and chain in July (2.5 months ago). For some reason my chain started skipping when I was in the smallest cog in back. I took it to a shop, they could not find anything ...
0
votes
2answers
4k views

KMC Z8S IG or HG compatibility

I have bought a KMC Z8S chain , but it slides over the rear cassette . The model of the cassette is Shimano CS-HG30-81 , it is not worn yet , and the chain length is also perfectly calculated . The ...
0
votes
2answers
380 views

Triple chainring + nonstandard sloped cogset. Can this work?

It seems that on my mountain bike and all other multispeed bikes I have seen having a rear cassette or freewheel all have sloped cogs, meaning they go from largest to smallest in order of decreasing ...
0
votes
2answers
14k views

Changing cassette from 8 to 10 or 11 to meet the Shimano 105 5800 groupset

I upgraded following parts to Shimano 5800 (front and rear derailleurs, crankset, chain, STI shifters). The last thing left to replace is 8 speed Shimano CS-HG51 cassette. Unfortunately I cannot index ...
0
votes
3answers
628 views

Is my cassette or chain worn out?

I bought this road bike as my first road bike in 2011. I have not changed the chain or any parts on it since then and I bike on it almost daily. It's been running great, but sometimes I have trouble ...
-1
votes
4answers
605 views

Hypothetical 1x10 simplification to 1x3 or 1x5

This is a hypothetical question that will help viewers (including myself) better understand gears and their limitations. Suppose someone sees a bike they like at a local bikeshop and it just happens ...