Frequent Questions

230 votes
101 answers
240k views

This question and its answers list the names of bike parts and cycling concepts. Some Rules Make sure you only put one term per answer! Try to include an image if applicable Include sources that ...
47 votes
8 answers
349k views

We often get questions on bicycles.stackexchange about fitting wider tires or narrower tires (for search - bigger tires, smaller tires) to bicycles. We have a large number of these with answers ...
mattnz's user avatar
  • 55.8k
31 votes
3 answers
9k views

We often get questions on bicycles.stackexchange about identifying a bicycles manufacturer, model, make, and year. Often these questions are downvoted or closed -- usually with a comment attached to ...
RoboKaren's user avatar
  • 29.7k
22 votes
9 answers
151k views

This is a canonical question that will hopefully encompass all of the questions we get asking us to determine what year a bicycle was manufactured (how old is my bike, how old is my frame, etc.). Each ...
RoboKaren's user avatar
  • 29.7k
26 votes
1 answer
8k views

Intended as a canonical answer to the many questions we have about damage to carbon parts. It is well known that carbon fiber parts can be damaged and fail, and carbon parts can be fragile when ...
mattnz's user avatar
  • 55.8k
18 votes
5 answers
9k views

It seems like pretty much everywhere I look, serial numbers can't do the things that it seems they should be able to do. They can't help people figure out what bike they have. They can't help at all ...
BSO rider's user avatar
  • 5,765
16 votes
3 answers
7k views

I tried getting a good measurement with my caliper, but the flexibility of the tire doesn't help much. Let's say I have a 26"x2.125" tire. I know this fits on an ISO 559mm bead seat diameter ...
Ehryk's user avatar
  • 4,063
28 votes
6 answers
12k views

In the (distant) past I commuted 6 km (more than half an hour) each way, on a cheap bike with big knobbly tyres. Soon I'll have a new commute: 18 km each way, daily. That's much further than I've ...
ChrisW's user avatar
  • 12.4k
22 votes
4 answers
6k views

I am curious how to estimate drag for a bicycle. This has two different framings: Find the amount of power required to ride at a certain speed. That is, when one is traveling at a constant speed, the ...
Reid's user avatar
  • 1,577
3 votes
2 answers
50k views

I have a bike I'm trying to sell because it's just been sitting in my basement. It looks as if someone primered it and the only thing I found was a serial number. Is there like a website I can look up ...
Jessica Barnhart's user avatar
34 votes
10 answers
12k views

I'm moving to a city where I can ride a bicycle to the grocery store, coffee shop etc. I want to purchase a decent used bicycle. I'm leaning towards a bike that's in between a "10-speed" or road-bike ...
MrDatabase's user avatar
15 votes
2 answers
3k views

My chain broke and in a moment of silliness (I was cold wet and slightly annoyed) I threw the broken one away before thinking about measuring the new one. Is there a guide to getting the chain ...
mgb's user avatar
  • 4,005
44 votes
11 answers
9k views

In this question (with this answer) I asked about a commuter bike, which is to be ridden 40 km every weekday, in the city. And apparently for this scenario I can choose either of two possible kinds of ...
ChrisW's user avatar
  • 12.4k
41 votes
3 answers
8k views

I have heard that one ought to turn the pedals at 90rpm. However, I do so much slower, especially while standing, and would like to understand the argument behind this number (or any other number). So:...
Vorac's user avatar
  • 14.1k
34 votes
29 answers
12k views

What is the most useful accessory you got for your bike? By useful, I mean something that improved the enjoyment or functionality of using your bike. Note - I know this is a subjective question, but ...

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