Linked Questions

11
votes
5answers
9k views

Replace Brompton folding pedal - what tool is needed?

I've managed to completely break the folding left-hand pedal on my Brompton. The bit where it fastens onto the crank* is fine, but the rest of it gone. What tool(s) do I need to remove the broken ...
9
votes
6answers
6k views

What causes chain suck?

Specifically when changing gears from middle chain ring to smallest, the chain will sometimes get 'sucked' up between the inner chainring and chain stay. It seems to happen more often in muddy ...
9
votes
3answers
17k views

Is it safe to ride on a cracked rim?

Doing my monthly inspection & clean of my wheels last night and I was shocked to see a crack around one the spokes as they enter rim. It is a rear wheel (Shimano R600 I think). I had obviously ...
16
votes
4answers
2k views

What is a power meter and why do I need one?

So I've been looking to become a triathlete soon and I'm hearing all this talk about power meters. Now, upon googling I found vague information which is why I came here. Exhibit A. That article gives ...
26
votes
9answers
178k views

Can I use a gas station air pump on a bike tire?

Someone pointed out that it may be risky, and it might not have the right kind of nozzle, but I don't have a bike pump at the moment. Does anyone else ever do this?
43
votes
11answers
26k views

What's the efficiency of hub gears compared to derailleurs?

What's the efficiency of hub gears compared to derailleurs? I know that hub gears are not as efficient. Apart from being heavier, how much will I lose in performance if I use hub gears?
10
votes
7answers
1k views

What is the origin of BSO - and is it internationally recognized?

Who is the first person who came up with the appellation, "Bicycle Shaped Object" (BSO) referring to very inexpensive and very poorly built bicycles sold through mass-market department stores? Bonus ...
2
votes
2answers
86 views

How is chainstay length defined for frames with horizontal dropouts?

Just reading our own definition of Chainstay Length in the terminology index. It is written currently as the distance between the centre of the chainring and the centre of the rear cog. This is ...
1
vote
2answers
107 views

Can we use a 9 speed rear derailleur on a 8 speed bike?

I have a Rockrider 5.2 with a Shimano Altus 8 speed rear derailleur. After an accident it started to malfunction. I planned on replacing it with a Shimano Acera M3000 but then it is marketed as 9 ...
3
votes
3answers
268 views

Alternatives to shorter cranks for knee pain

I've recently developed pain at the front of my knees when cycling. I suspect this is caused by, or at least made worse by, my bike having cranks that are too long for my leg length (172.5mm cranks ...
5
votes
3answers
5k views

What does 'tire clearance' mean?

What does 'tire clearance' mean? Can you please explain with an illustration? Does it mean the distance between the tire and the fender?
2
votes
3answers
859 views

Dual water bottle brackets on a single frame mount?

I'm looking for a way to mount two water bottle cages on the seat tube. Is there any way to make this hold two water bottle cages on one bracket / mount point?
17
votes
15answers
5k views

How can I carry a tripod on my bike?

I have a tripod for my SLR camera that I want to carry on my bike. It's just a generic tripod like this one, but if I strap it to my top tube it rubs against my legs while riding (and it's slightly ...
5
votes
2answers
332 views

Back wheel suddenly started “wiggling”

I bought recently a second hand bike for my daily rides, and it seemed in good shape. I rode it for more than a month without any problems, but recently had issues with it and had to get it fixed (...
4
votes
4answers
13k views

Should I worry about a chipped carbon mountain bike frame?

The other day while I was racing my Specialized Stumpjumper I noticed a chip on the frame. It's on the rear support bar right behind the seat post between the rear tire. My teammate who is a mechanic ...

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