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

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2
votes
1answer
29 views

can I mix and max cogs from 2 different SRAM cassettes and still expect it to work?

My road bike currently has a 12-25 cassette on it. I really want the cog with 11 teeth instead of the cog with 12 teeth, but I don't want to upgrade to a full 11-32. If I were to install a new 12-25 ...
6
votes
3answers
3k views

Does it matter which cassette I get for downtube friction shifters?

My grandpa gave me his old 1974 Raleigh International (all original Campy) as a graduation present. Since the stock wheels are for tubular tires, and I do want to ride it around town, I want to get ...
0
votes
2answers
116 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 ...
0
votes
4answers
71 views

Shimano Ultegra 6800…what do I need?

I'm gearing up for my first bike tour. I have an old motobecane cross bike, I think it's a 2007. I need more granny gears. Right now I have a 9 speed 12-26. I'm looking into the Shimano Ultegra ...
1
vote
1answer
37 views

Motobecome Mirage (I think) made in France

I am trying to put this bike back into use. The cassette is not freewheeling. Does that mean that the cassette is locked up, or do some bikes not have a freewheeling cassette? If it is locked, will ...
2
votes
2answers
166 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 ...
-2
votes
1answer
56 views

Quad chainring (4x12)?

Does anyone yet make an affordable quad chainring? I would love to see a 4x12 with my staggered cog idea such that all 12 gears are shifted progressively using the 4 chainrings. Each chainring would ...
3
votes
1answer
168 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 ...
0
votes
1answer
73 views

Changing the entire chain gear mechanism

I have a Lapierre shaper 100. I am looking to change my entire chain mechanism as some of these parts need to be changed. I have selected my components, and I am hoping you can tell me if these ...
3
votes
1answer
81 views

Can I use a 7 speed shifter on an 8 speed cassette

I am currently upgrading my mountain bike and have bought a set of wheels that accepts 8,9,10 speed cassettes but my previous wheels used a 7 speed freewheel. If i install the new wheels with an 8 ...
2
votes
4answers
96 views

is this cassette and chain ring combination good in terms of number of teeth?

I recently bought a used bike which has a shimano alivio 8 speed gearset. When I look at the drivetrain, it really looks small to me. Below are the size of them in terms of the number of teeth: ...
2
votes
4answers
154 views

Direction of chain whip

Is there an easy way of working out which way round to apply a chain whip to a cassette for its removal? I've taken plenty of them off in my time but always end up having a couple of tries at it ...
5
votes
3answers
13k views

Advantages / disadvantages of freecoaster and cassette hubs

I've been reading a lot over the past few days about BMX, and last night I watched a few videos like this one. I have been seeing the words "freecoaster" and "cassette" around a lot, and I was curious ...
24
votes
11answers
77k views

Why would one ever buy a 12-25 cassette when an 11-25 is available?

I was looking at purchasing a new cassette and chain. Looking at the available cassettes for SRAM components, there is a big variety of sizes available: 11-23: 11-12-13-14-15-16-17-19-21-23 11-25: ...
6
votes
6answers
11k views

7-speed MTB cassette on 8/9-speed wheel hub, where does spacer go?

Sheldon Brown says "Add a 4.5 mm spacer before installing a 7-speed cassette on an 8-, 9-, or 10-speed hub", but doesn't seem to show spacer placement in any picture. My direct experience is that the ...
0
votes
3answers
139 views

Rear cassette 'ticking' forward, making chain catch, what is the problem and how do I solve it?

I have a Giant Rapid 4, bought in 2009. When freewheeling (i.e. rolling forward but not pedalling) on my bicycle, the chain catches. I had a look and I think this is because the rear cassette ...
7
votes
5answers
37k views

Can a 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 ...
2
votes
1answer
72 views

gear shifting after changing cassette

I've just changed a worn out cassette on my road bike (SRAM 8 speed 12-26T) and replaced it with a Shimano 12-25T 8 speed cassette. Now it looks like my gear shifting doesn't work. I can't get into ...
2
votes
2answers
235 views

Is a Shimano Dura-Ace 7800 rear derailleur compatible with a Dura-Ace 7900 11-27 cassette?

Is the Shimano Dura-Ace 7900 10 speed cassette with a ratio of 11-27 cassette compatible with a dura-ace 7800 rear derailleur? Some people say its fine but more important to me is what Shimano says ...
4
votes
1answer
52 views

Pie plate replacement

The pie plate / dork disk between the cassette and spokes on my bike cracked from age and I had to remove it. I'd like to get a replacement but I can't seem to find any online. Also, do I just need to ...
4
votes
1answer
60 views

Friction Shifter Rear Derailleur, Not Holding Low Gear

My 86' Raleigh 10 speed with friction shifters insists on not holding the lowest gear. If I hold it in the low gear, it will stay but the moment I remove my hand, it goes back up. I'm assuming it is a ...
4
votes
2answers
155 views

What is causing an intermittent side to side wobble of the rear cogs?

I am struggling to diagnose the cause of an intermittent side to side wobble of the cogs on a rear wheel. Here's what I know: Periodically (maybe every 10-15 minutes) during a ride, I experience ...
1
vote
2answers
130 views

SRAM compatible 11 speed 12-25 cassette?

I'm looking for an 11 speed 12-25 cassette compatible with a SRAM drivetrain, however I don't think SRAM makes one. They list specs for their 11 speed cassettes as follows: 11-25: ...
7
votes
4answers
7k 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 ...
2
votes
2answers
340 views

Bike pedals turning when coasting (not a fixed gear)

My pedals are moving when I'm coasting, and if I try to stop them the upper segment of the chain gets really loose, and the rear derailleur does this thing, where it gets almost horizontal, and then ...
2
votes
1answer
219 views

Shimano 105 5800 mech compatibilty with 5700 shifters

I have purchased a Shimano 105 5800 11 Speed Cassette 11-32, 116 link chain (CN- HG600-11) and longer-caged 'GS' rear derailleur (RD-5800-GS) to replace my original 105 10 speed 5700 series mech. Can ...
8
votes
1answer
343 views

What makes a cassette mountain bike vs. road bike?

I'm in the market for a new cassette for my road bike and I frequently see cassettes listed as mountain bike or road bike. Since they're usually interchangeable and can be used on either type of bike, ...
4
votes
2answers
246 views

Add/remove sprockets on cassette to customize gear ratios

I have a Shimano 105 10-speed cassette on my road bike, with sprockets 11-12-13-14-15-17-...-28 (I don't know by heart what comes between 17 and 28). I'd like to remove the 11, and put a 16 between ...
4
votes
3answers
8k 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 ...
4
votes
3answers
167 views

cold setting 3-speed road frame to 7 8 speed cassette

So my old road bike has a 3-speed freewheel, dropout spacing is about 114 mm. I'd like to give it an upgrade and put a 7 or 8 speed cassette (maybe stick with a freewheel if 6-7 speed, I just want ...
0
votes
3answers
10k views

What do I need to know about fitting new wheels on a bike?

My girlfriend has had the wheels stolen from her bike. I'd like to replace them, but we're working with a limited budget so I'm going to do the work myself and source the parts second hand. I've done ...
1
vote
1answer
149 views

Is Sram PG850 cassette a substitute for Shimano TZ31 freewheel?

I need your advice. I have a Giant Escape 2014 UK model bike and it's time to change the chain and the original cassette/freewheel, which are worn out. My question is, if I get this Sram PG850 ...
2
votes
2answers
63 views

Shimano Cassette Change

I have a Shimano compact double on my road bike with an 11-28 Cassette (50-34 Chainrings). I would like to change the cassette to 11-32. Is that possible and if it is are there other components I ...
1
vote
2answers
153 views

10 speed cassette/derailleur, but only getting 9 clicks?

I've got a 2013 Giant Escape 0 Hybrid with a stock 10speed Shimano Deore rear derailleur. My wife was riding the bike the other day, and somehow managed to shift in such a way that it popped the ...
3
votes
1answer
96 views

Can I install a gears cassette on a regular bike?

I was given a bicycle for my birthday (yai!), it has 24" wheels and it is awesome! But it is single speed and sometimes it is hard to ride up-hill in my daily commute. Could I change the rear gear ...
-1
votes
5answers
465 views

Fitting new wheel with 10 speed to a bike fitted with 8 speed [closed]

I own a Specialized Allez road bike which is 8 speed. I've just bought new wheels and want to put a 10-speed cassette on, like the previous owner. What will I have to do to the bike so that the gears ...
0
votes
2answers
107 views

Cassette & Crank combo for commuting

Okay so I've been reading about gear ratios and what not all morning and I can't make any sense of it. Some of it is registering but it's still kind of over my head. I'm ordering a Tiagra group set ...
16
votes
5answers
33k 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?
0
votes
1answer
161 views

MTB Cassettes- are they universal to wheels

Are cassettes all standard as fare as fit on the wheel? For example, can I can swap out a new Shimano for my old SRAM without looking at specifications for fit?
1
vote
1answer
104 views

SRAM Cassette on Campy Wheels

I wrecked my current wheel set in a crash and am considering purchasing a set of Campy Hyperons from a friend. AFAIK the wheels are stock and haven't been tweaked in any way. I would like to know if ...
2
votes
1answer
180 views

Rear wheel doesn't turn with cassette

I just got a used mountain bike and on my first trip my rear wheel stopped turning with the cassette. When I pedal it turns the cassette and the gears still change smoothly but it doesnt turn the rear ...
4
votes
1answer
1k views

5 speed cassette on 8 speed hub

I just picked up a cheap wheelset to replace the wheels on a vintage bike. The old bike had a 5 speed freewheel (I think. The model printed on it is shimano-ug). The new rear hub is a shimano fh-rm30 ...
17
votes
6answers
26k 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 ...
0
votes
2answers
66 views

Sora 9 Speed on Campagnolo Cassette

I have a wheelset with a Campagnolo cassette body. I want to run Sora 9-speed brifters with my wheelset. Will this work? I believe that it will because according to the information posted on ...
1
vote
3answers
168 views

Chain length and cassette tooth count relationship

A little context first: I'm going to be riding in the French Alps and plan to tackle some of the classic climbs (Alpe D'Huez, Galibier, etc) next month - I currently have a Campagnolo Athena 50/34 ...
2
votes
2answers
8k views

7 speed to 8 or 9 speed cassette change

this is my first time here and i am new in the bike sport. I have a mtb for a month now and i usually use it for road trips with some dirt intervals. It has a 7 speed shimano cassette (14-34) and on ...
2
votes
2answers
108 views

What gears should I go for?

I have a Trek road bike (although you might call it a hybrid since it has straight handlebars. I do about 3,000 miles per year on it for general health reasons (up to 30 miles at a time and averaging ...
0
votes
2answers
5k views

Can I change my 7-speed rear derailleur to an 8-speed?

I bought a 2013 Cannondale Quick 6 Hybrid for my daily commute almost exactly a year ago, and I'm looking to give it some upgrades. It currently has a 7-speed Shimano Altus derailleur, and I was ...
3
votes
3answers
2k views

Replacing an 8-speed cassette with a 9-speed one to make my bike faster

I'd like to make my 8-speed tokyobike Classic Sport city bike go faster so I'm considering replacing the 8-speed cassette with a 9-speed one which can be found on the tokyobike Sport. The bike has ...
2
votes
2answers
271 views

Will two spacers between the cassette and the hub effect the chain line?

So I have a set of custom wheels (White Industries T11 hubs) and when the cassette is correctly fastened to the hub with the single spacer provided the cassette cogs can be moved in the direction ...