Questions tagged [sprocket]
A sprocket or sprocket-wheel is a profiled wheel with teeth that meshes with a chain. Bicyclists normally call the front sprocket attached to the cranks the "chainwheel" and the rear sprockets either "sprocket" or "cassette."
150
questions
22
votes
6
answers
7k
views
Are single chainring mountain bikes usual?
I just bought my son a typical+ mountain bike in a typical Frech sports shop (a BTWIN 530 at Décathlon) and realized that it has only a single sprocket at the front, and 9 sprockets at the back:
I ...
- 1,135
15
votes
5
answers
3k
views
What are the disadvantages of having an old, worn cogset?
I'm always a little wary of people telling me I should replace things on my bicycle that aren't broken. Because of this, I'd like to know details and symptoms about what happens if I ride my bike with ...
15
votes
1
answer
2k
views
What are the ridges seen on sprockets and chainrings for?
I've always wondered what these ridges below the teeth on sprockets are for. Can anyone enlighten me?
- 337
13
votes
1
answer
4k
views
Was I just sold a used cassette?
I just bought this Shimano HG41 cassette and I noticed that not all of the teeth and dips between them look the same. You can easily see this in the image that I included if you compare the teeth on ...
- 321
10
votes
5
answers
25k
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 ...
- 4,530
9
votes
1
answer
29k
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
- 389
9
votes
2
answers
3k
views
10-teeth/9-teeth Sprocket Efficiency Losses
Almost each time 10T (or 9T) sprockets on cassettes are mentioned, there are remarks about efficiency losses when such sprockets are used. But I haven't found quantified information about these claims....
- 21.4k
9
votes
5
answers
133k
views
50/34 vs 52/36 crankset for 11-32 cassette (shimano 105 5800FC)
Following up on this enlightening answer, I would like to know the differences between 50/34(compact), 52/36(mid-compact) and 53/39 (standard).
The cassette I am choosing is 11-32 to give me a wider ...
- 193
9
votes
4
answers
7k
views
Bent front sprocket
My chain just started to slip off my front gears and it happens within a minute of riding. I discovered that the middle sprocket is bent. This leads me to my questions:
How much should a LBS charge ...
- 915
9
votes
3
answers
42k
views
Which lubricant/grease to use for ball bearings?
A little mishap happened today during cleaning my bicycle. I tried to take off the sprocket wheel for easier access, but instead I opened the lock nut of the hub (cassette type) and the balls came out....
- 93
8
votes
1
answer
2k
views
How can I keep my chain from derailing from the front sprocket under load?
I've watched the chain derail from the front sprocket, and there is considerable flex that is causing it. I'm a big guy with an athletic build (6'7"/280lbs), and it's a big-box bike, so I'm not ...
- 181
8
votes
3
answers
3k
views
What does marking like "aq/ar" on the sprocket mean?
Shimano sprockets are marked with short strings like "aq/ar", "bg", "as/au/be" and others. For example, "bj bk" can be read on the image below:
It looks like they mean the hyperglide series to which ...
- 1,635
8
votes
1
answer
7k
views
Switch to a larger sprocket on child bike with coaster brakes
I bought two used bikes for my children, both with 16 inch wheels. I was surprised to see that one child has to pedal much faster to go the same speed as the other child, and discovered the two bikes ...
- 83
7
votes
4
answers
4k
views
Can you reverse the sprockets on a cassette to lengthen its lifespan?
I know my bike's rear cassette needs replacing, but before I do that, is it feasible to dismantle the 8 sprockets to reverse their spin? Can you increase the lifespan of a cassette by letting the cogs ...
- 235
7
votes
3
answers
5k
views
What difference does the range of gear size matter?
I get the idea of ratios and the obvious that a smaller gear on the front and a larger one on the back will give you an easier end result but what difference does the range of a chainset or groupset ...
- 1,263