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Questions tagged [rim-brake]

Questions referring to the braking system in which pressure is applied to a track on the rim of the bike tire.

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45 votes
6 answers
73k views

How do I make my rim brakes stop squealing?

My rear rim brakes are squeaking loudly. I don't know what the problem is, but I am sure it has nothing to do with rain because it happens all the time even if it is dry. Anybody have an idea what ...
Promather's user avatar
  • 553
1 vote
1 answer
2k views

What is the mechanical advantage of mechanical rim brakes and levers?

I understand that the amount of hand force required for a given braking force depends on the mechanical advantage of the braking system, which in turn is a multiplication of the mechanical advantage ...
juhist's user avatar
  • 19.2k
21 votes
2 answers
250k views

Converting bike from rim brakes to disc brakes

I just bought a used 2009 Kona Dew and it comes with regular rim brakes. I'm perfectly happy with them so far, but have been wondering if disc brakes would come handy when it rains. What is involved ...
Soo Wei Tan's user avatar
58 votes
18 answers
58k views

What is the practical advantage of disk brakes over rim brakes?

Disk brakes are becomming more popular on bikes now, and I was just wondering what the advantage is of this type of brake over the older rim brakes.
Connor W's user avatar
  • 683
14 votes
3 answers
11k views

Why are there metal shavings in my brake pads?

I have several brake pads on my cantilever brakes that have several small metal shavings embedded in the pad. Is this normal? What should I do about it?
Benzo's user avatar
  • 18.2k
3 votes
4 answers
725 views

Why dual pivot brakes, not longer brake arms?

Dual pivot brakes are marketed as having "more braking power", which in technical terms means higher mechanical advantage. Exactly the same effect can be achieved by longer brake arms (ones ...
Konstantin Shemyak's user avatar
25 votes
3 answers
152k views

How do I stop my rim brakes making a squeaking/squealing sound?

I bought a Schwinn Frontier Sport few months ago and started riding happily. After a few weeks my front rim brakes started creaking. It's so annoying in public places. My rear brake doesn't produce ...
pMan's user avatar
  • 353
14 votes
5 answers
63k views

V-brake arm not returning to "open" position

I have a folding bike with v-brakes and I noticed that when I pull on the rear brake lever, one arm of the v-brake doesn't go back to its original position. I tried adjusting the screws but it still ...
dork's user avatar
  • 827
12 votes
2 answers
9k views

Is it possible to control two brakes from a single lever?

Up until the start of the year, I was a keen road cyclist, I even dabbled a bit on here amongst the experts, but unfortunately in February I suffered a stroke. I am gradually starting to pick things ...
PeteH's user avatar
  • 9,743
11 votes
3 answers
6k views

Do aluminum rims provide better braking than steel ones when wet?

When I upgraded the brakes on my bicycle recently, the shop asked if I wanted to also switch from my (chromed) steel rims to aluminum rims, saying the aluminum rims would provide better braking power. ...
Michael Ekstrand's user avatar
7 votes
2 answers
4k views

Re-painting Rims

Over time, the paint on the rims of a wheel has slowly been eaten by a set of brake pads. How do I strip left over paint? What type of paint should be used? How can I ensure the new paintjob will ...
Daniel's user avatar
  • 173
7 votes
1 answer
12k views

Fixing damage to brake rim surface

somehow the alloy braking surface of my rear wheel's rim has got a series of quite shallow lacerations, less than a mil' deep bunched quite closely together (the effected area is no more than 1/8 of ...
111111's user avatar
  • 313
6 votes
7 answers
7k views

Why do my brakes squeak? Do I have an incorrect distance between brake pads and rims?

My brakes were working normally until I adjust them today. I thought the brake pads were too close to the rims so I increase the distance a bit. Now every time I brake, they make horrible squeaking ...
chepukha's user avatar
  • 347
4 votes
2 answers
2k views

How to remove play in cantilever pivot point?

I have been working my way through issues with noisy front cantilever brakes. After running through many different ways to solve the issue including new pads (Kool Stop Dura2 Duel Compound), setting ...
Andy Clark's user avatar
2 votes
1 answer
507 views

Road rim bike brakes don't open when using the release

My Tektro R539 brakes do work on the road: they obey to the brake levers at squeezing and releasing times. They do not behave to the mechanism to open them (for wheel removal for instance), they do ...
Learning is a mess's user avatar
1 vote
2 answers
2k views

Rim seems to be shedding metal chunks

I have rim brakes on my mountain bike that's outfitted for urban duty. Two weeks ago, I noticed that my rear brakes were weaker and louder than normal. I found that, although my pads still indicated ...
BSO rider's user avatar
  • 5,735
31 votes
6 answers
137k views

Direct Pull (V-Brake) vs. Center Pull Cantilevers (pros and cons)

I am looking around for an old mountain bike to ride this winter (and this summer when it is wet). I was just browsing around and was curious what the difference was between Direct pull brakes: ...
sixtyfootersdude's user avatar
20 votes
2 answers
4k views

Is this rim still safe to use?

I bought it this way without the seller noting the issue, so experience from riding with these is zero. Rims are Ritchey Girder OCRs. The crack is pretty small, but noticeable, and I will be running ...
Legaspi Roy's user avatar
13 votes
1 answer
2k views

What's the purpose of the channel in the brake track of this rim?

What's the channel in the brake track of this rim for? (I think it's in the brake track, anyway, and that the brake pad would cover it.) I would have thought it better to have an unchanneled surface ...
compton's user avatar
  • 2,501
11 votes
4 answers
16k views

How do I get my brakes to stop squealing [duplicate]

I've tried sanding them down just a bit, cleaning the brake surface on the wheels, and this does stop them from squealing for a day or two, but it always comes back. I'm using Kool-stop pads if it ...
M. Converse's user avatar
  • 2,943
10 votes
3 answers
19k views

Is it possible to mount a disk brake hub to a rim-brake rim?

Suppose I have a disk-compatible hub and frame, but want build a wheel based around a very specific touring rim, which is labelled as being for rim brakes. My understanding is that you cannot attach ...
John Doucette's user avatar
8 votes
4 answers
4k views

Why would my rear brake pads wear faster than front?

It has already been established that most of braking power comes from front brake. Now, several times that I have been replacing brake pads on my commuter cyclocross bike I have noticed that rear pads ...
ojs's user avatar
  • 22.1k
7 votes
5 answers
276 views

Braking system conversion for Pashley Cargo Bike

I've picked up a Pashley Classic No.33 cargo trike and am turning it into a coffee trike. Once I've got an extra 120kg + my weight on there I'm aware I'm going to need a pretty good braking system. It ...
Jeremy Daubeny's user avatar
6 votes
1 answer
2k views

Changing Magura HS33 rim brake pads

My brake pads have worn to the point where the lever can no longer apply full pressure, and there isn't much pad protruding beyond the pad mounting. So they need replacing and I want to do it myself ...
Tom Goodfellow's user avatar
5 votes
3 answers
3k views

Switching the position of brake levers for a bike ordered from another country

I purchased a bike from Germany and I noticed the front brake lever is on the left and the back brake level is on the right. I'm from the UK, and all the bikes I've ever ridden have had a setup that's ...
LondonGuy's user avatar
  • 235
5 votes
1 answer
296 views

What brakes are these? Could I upgrade them?

I've picked up a Pashley no.33 cargo trike which I plan to turn into a coffee bike. Are these single pivot or dual pivot caliper brakes? They aren't particularly effective and I wondered if anyone had ...
Jeremy Daubeny's user avatar
5 votes
2 answers
2k views

Did my 2015 rim have wear indicators on the brake surface?

Should I expect an alloy rim from around 2015 to have had wear indicators, because it doesn't now? I assume a decent manufacturer, and a rim that's neither the cheapest nor high-end and super-light. ...
Chris H's user avatar
  • 59.9k
5 votes
5 answers
412 views

Comparing hub/disk brake vs rim brake. Power, reaction, and skidding

I'm not a bike enthusiast but I've commuted quite a lot with bikes. I don't always understand the physics but believe I can extract well what happens per experience. I could be mistaken though. I've ...
Alex Sarafian's user avatar
3 votes
2 answers
4k views

Rear Tire 'Wobble' After Tire Change

I have an old huffy 26 inch mountain bike. I changed the tire a couple days ago and now it has a pronounced wobble (side to side movement, not at the axle). Its like its misaligned somewhere but ...
Steve Salowitz's user avatar
3 votes
2 answers
2k views

Can I replace my rear cantilever brake with a caliper brake?

Can I replace my damaged rear cantilever brake with a caliper brake? I assume there are two things to consider: frame and lever. Frame The frame has a black, hook-shaped part, which I believe Sheldon ...
pateksan's user avatar
  • 2,364
3 votes
2 answers
3k views

What size is the tiny ball bearing used in SRAM rim-brake caliper quick release detents?

SRAM road rim-brake calipers (mine are specifically Rival from 2011) have a quick release lever to facilitate wheel changes, as many calipers do. The SRAM QR lever has detents which make a little "...
John Zwinck's user avatar
  • 2,318
3 votes
2 answers
39k views

How to tell if a new pair of brake calipers will fit my wheel, tire, and frame?

I have a Takara Kabuto. It has 700x32 tires (I don't really know what that means). I was looking at upgrading the brake calipers. I was looking at these, among others. How do I tell if they will ...
evamvid's user avatar
  • 133
2 votes
5 answers
4k views

What are the typical range of maximum braking friction forces?

There are many non-bike applications which benefit from using bicycle hardware. Case in point, there is a long and rich tradition of using bike parts in aviation. One particular area of interest is ...
Kenn Sebesta's user avatar
2 votes
3 answers
1k views

Front brake lacks 2mm in reach. Can it be ironed out?

I have been having some trouble with my 6 years old Tektro R539 brakes, see Tektro rear brake does not stay closed and Road rim bike brakes don't open when using the release . So I am now looking ...
Learning is a mess's user avatar
2 votes
2 answers
6k views

Shimano GRX groupset with mechanical brakes for CX/Gravel

I'm going to upgrade my cyclocross bike with new 1x11 dedicated components. Currently bike has old 105 5700 groupset and cantilever brakes. Those mechanical brakes are the main problem - I don't want ...
Cymonello's user avatar
1 vote
1 answer
1k views

one side of brake pad retention problem (i.e. attached to rim)

my front wheel brake pad (only one side) is still attached to the rim after I released brake lever. How do I fix this problem? I believe it is a cantilever brake.
Dev's user avatar
  • 11