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Questions tagged [brakes]

Disc/rim/drum/coaster brakes; braking technique, maintaining brakes, anything else about stopping a bike.

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Rear brake cable rubbing (internal routing), what am I missing?

I just bought a used bike and it is my first bike with internally routed cables. I felt that rear brake is not smooth and feels like the cable is rubbing against metal so I am trying to replace it. I ...
Metal Mathematician's user avatar
1 vote
2 answers
100 views

Repair/Replace rim brakes with bottom cable routing

Ok people I need some knowledge around here. I'm working on fixing up my wife's bike. It's a wonderful classic Peugeot women's city bike. Mid 70s steel frame. I've run into the issue of the brakes. ...
Ben King's user avatar
6 votes
2 answers
579 views

What is the purpose of mixing brake cable housings?

Jagwire has in its offer Road Pro Brake Kit -- https://jagwire.com/products/diy-cable-kits/2017road-pro-brake-kit. The housing is two segments -- compressible next to the brake levers and for the rest ...
greenoldman's user avatar
  • 2,044
2 votes
2 answers
209 views

Front fork brake posts removal

I wonder if the v brake pivot posts can be removed from the front fork, even though the posts have no flat side to undo them with a spanner? Can these be removed with a pair of pliers or a grip of ...
D D's user avatar
  • 17
5 votes
2 answers
443 views

Cantilever Brake Installation (can thick and thin cup washers be swapped?)

I'm reinstalling the rear cantilever brakes after taking them off for a thorough cleaning. I'm also upgrading the pads at the same time to a Kool Stop model with "extra material" (i.e. ...
SSilk's user avatar
  • 3,693
7 votes
2 answers
600 views

Caliper brake lubrication

Good day all, I have a question about caliper brake maintenance. Occasionally, my caliper brakes remain a little "stuck" closed, in that I have to manually open them/spread them back out in ...
Andrea's user avatar
  • 365
7 votes
2 answers
919 views

Is it OK to reverse this cantilever brake yoke?

My 2010 Specialized Tricross has cantilever brakes that look like this: (Not my bike in this pic - found this image online and yes, they're missing the two small screws that hold the transverse cable ...
SSilk's user avatar
  • 3,693
5 votes
2 answers
624 views

Front Brakes - replace missing part or entire assembly?

I found a project bike that was missing some things and I decided to fix it up. The first image is of the front brake which is missing the piece that clips onto the brake cable. The second image is of ...
Jacksonkr's user avatar
  • 251
4 votes
2 answers
418 views

Hydraulic disc brakes: is 4 pistons front/2 pistons rear a "better" combination?

I bought recently a e-bike (urban/light offroad, front suspension). The spec sheet indicates that the brakes are Magura MT5 eSTOP. I noticed that the front calipers have 4 pistons, as one should ...
Renaud's user avatar
  • 13.6k
1 vote
1 answer
53 views

Roller Brake squeeking, even after body replacement

I have a Bakfiets with a roller brake system from Shimano (BR-C6000-F-DX). The Front started making squeaking noises in the winter, so I bought the special Shimano Braking Lube, opened the brake, ...
Andresch Serj's user avatar
7 votes
2 answers
332 views

Aside from brakes, what items can be mounted to v-brake mounts?

I have a bicycle frame with mounts for both disc brakes and conventional brakes. I'm curious to know what other accessories I can attach to the conventional brake mounts if I decide to use disc brakes ...
Stücke's user avatar
  • 1,408
1 vote
1 answer
100 views

How do you mod an internally geared hub to permanently run in one gear?

This is nowhere near a priority for me. But I fixed my first coaster brake, I'm high off my success and I want to learn more.
Ethan Miller's user avatar
1 vote
1 answer
161 views

How to install a Bafang brake sensor on a road bike with drop bars and V brakes?

I'm planning to install an e-bike kit on a road bike with drop levers. You must install a sensor for the motor to stop providing power during braking. However they are all used for normal brakes. ...
nammerkage's user avatar
4 votes
3 answers
534 views

Where can I buy a radiused washer?

I recently bought a new set of Tektro R539 Caliper Brakes. These brakes are nutted (non-recessed). Each brake came with one curved (concave, radiused) washer and one flat serrated washer. My front ...
Will Haley's user avatar
1 vote
2 answers
103 views

Btwin tilt 120 brakes

I feel like the stock brakes of my hilt 120 are not strong enough, the rear one is the one giving me trouble, I thought about changing them, but is it worth it? Does anyone have suggestion? STOCK ...
Barone's user avatar
  • 11
-1 votes
1 answer
49 views

Boardman hydraulic disc brake lever fully lose

Brake Lever fully loose and not acting on the piston. Circlip off so How to fix?
Roger Gambles's user avatar
2 votes
2 answers
317 views

What size replacement brake pads for the Brompton?

What size brake pads are needed to replace the brake pads on a Brompton bicycle? The brake pads on my Brompton bicycle are getting thin, and I would like to buy a replacement pair. There is no ...
Michael Altfield's user avatar
4 votes
1 answer
79 views

Faulty hydro brake?

Just checking I am not going insane over this... I have Shimano MT400's on my commuter. The rear one works brilliantly. The front one though is awful. There is no "bite", very little power ...
mco-kona's user avatar
4 votes
1 answer
336 views

V-brakes rubbing on wheel

I have been given a bike which is in good order, except that the brakes are rubbing against the wheel. I have fiddled about with it but I can't adjust it effectively.
Tom's user avatar
  • 171
12 votes
1 answer
2k views

Why are disc brakes (disc & caliper) always installed on the left side of the bicycle?

When reading the question Front tire and downtube are extremely close, I realized that disc brakes (referring to the assembly of brake disc and caliper, not the brake levers) are always installed on ...
sleske's user avatar
  • 2,219
1 vote
1 answer
128 views

Scratched hydraulic brake hose during install - should I be concerned?

today I was installing brand new GRX brakes into new frame. It was not my first time, I've already build 10+ bikes, I messed up through. I inserted rear brake hose without any issues, I had my guide, ...
messed_grx's user avatar
7 votes
2 answers
277 views

Is there a quick and reliable way to identify hydraulic brake fluid?

I recently saw a Shimano hydraulic disk brake system that was about to be bled with yellow oil in it (Shimano's mineral oil is red). Most likely it was third party mineral oil like Finish Line's ...
olliebulle's user avatar
  • 3,371
4 votes
2 answers
126 views

What is the status of brake lights? seems like a decent idea? inadequate solutions? [duplicate]

I'm familiar with bicycle brake lights but not sure why they aren't more common? What is the public perception, if any? Or not the public but more serious cyclists like we find here? There are a ...
Fred Goldfarb's user avatar
19 votes
4 answers
4k views

The stock brakes on many e-bikes may be inadequate. What changes would make them adequate, and at what cost?

Note that some links in this question go to sites with a metered paywall, i.e. you can access something like 4-5 free articles per month. While the question mentions a bike manufacturer, the problem ...
Weiwen Ng's user avatar
  • 25.2k
8 votes
2 answers
464 views

Is degassing DOT brake fluid before a bleed still a thing?

I recently bled old AVID Juicy 3 hydraulic brakes and followed the procedure described in this AVID Bleed Procedure video (starts at the relevant section). While preparing the syringes, the technician ...
olliebulle's user avatar
  • 3,371
2 votes
1 answer
85 views

Sturmey-Archer drum brake making a noise

I bought a Pashley bike over 20 years ago, very good bike, built like a steam locomotive. However, recently, it has developed a noise that I think is from the front brake: a Sturmey-Archer drum brake. ...
j4nd3r53n's user avatar
  • 261
10 votes
2 answers
1k views

Do we need to repeat the bed-in process for disk brakes after replacing only the pads?

I know that we need to go through the bed-in process when installing a new disk, but what about when changing only the pads? Technically, the surface of the disk has already been prepared with the ...
olliebulle's user avatar
  • 3,371
-1 votes
1 answer
79 views

Mechanical bike disc brake caliper lever

Where can I find a data sheet for this part? I want to know if there is a magnification factor between the force which acts on the disc brake by pads, and the force that I pull the wire with, as I ...
المهندس محمد جابر's user avatar
2 votes
1 answer
145 views

How do I replace one oil with another in a Shimano brake system?

Having seen this question about correcting the "wandering bite point" problem common with Shimano brake systems, I intend to replace the standard Shimano mineral oil in my brakes with the ...
Will Vousden's user avatar
  • 3,792
2 votes
2 answers
130 views

Tektro HD-R210 Bleed Port Leak

I have a Giant Fastroad SL-1 with brakes listed as Tektro HD-R210 hydraulic disc, 140mm Recently I bled the brakes and afterward noticed that there's a very slow leak coming from the bleed port. The ...
Scottmeup's user avatar
  • 1,357
4 votes
3 answers
210 views

What are my options for adding rim or disc brakes to the rear wheel of an old (circa 2012) Electra Townie 3i?

I recently purchased a used Electra Townie 3i for my first bike. I don't know the exact age, but I'm guessing it was manufactured sometime between 2012 and 2017. I was looking at Electra's current ...
Jared Strain's user avatar
9 votes
7 answers
1k views

On road repair for hydraulic brakes

What are the possible on-road modes of failure for hydraulic bicycle braking systems, and what can a touring cyclist do to be prepared for their eventuality? What can one carry as an emergency backup ...
SamA's user avatar
  • 2,708
4 votes
1 answer
169 views

New Alloy Rims, but can’t brake?

I rebuilt an old Peugeot and swapped out the old steel rims for new alloy rims. I then cleaned the existing caliper brakes and put on new brake pads and cables, but they just don’t stop the bike. So ...
Allen's user avatar
  • 41
2 votes
1 answer
113 views

Schwinn Kids Bike brake caliper spring not attached. Help!

I recently ordered a child bike for my daughter as a Christmas present. The hand brake caliper was not assembled with the brake spring in place. Based on my basic understanding of how this works I ...
Andrew's user avatar
  • 123
5 votes
1 answer
288 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
7 votes
5 answers
160 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
2 votes
1 answer
90 views

Oil stopper of Shimano oil funnel: what's its sharp end for?

Shimano instructs to insert the sharp end of the "oil stopper" to bleed the brakes: What is this for? I would expect that the oil should just flow from/to the funnel when pumped into the ...
Konstantin Shemyak's user avatar
5 votes
1 answer
256 views

How do you grease a coaster brake?

I needed to fix my coaster brake, but I don’t know which grease to use or how to apply it. When I hold it in my hand, the sprocket turns the hub; and when I turn it backward, the brake engages. But in ...
Ethan Miller's user avatar
4 votes
2 answers
135 views

Campagnolo brake spring too stiff

I'm overhauling a vintage Campagnolo caliper brake and the spring is extremely stiff. Unfortunatley I can't find new springs that fit (some almost fit, but are too short). Thoughts?
Tomer Weller's user avatar
1 vote
1 answer
99 views

I tried to fix my Kent Seachange, but when I pedal the wheel shimmies over to the right-hand side

It’s not loose, or misaligned on the axle. It just moves to the right and jams against the frame. Did I forget a part? ( From https://www.walmart.com/ip/Kent-Bicycles-Sea-Change-Men-s-26-in-Beach-...
Ethan Miller's user avatar
0 votes
0 answers
98 views

Type of brakes that will work with beach cruiser with no brake hole in wheel

My daughter has a 24" beach cruiser and doesn't like pedalling backwards to stop. She really wants hand brakes. There is a hole in the frame above the tire (where a rear light might be installed) ...
Kristin Ashe's user avatar
4 votes
2 answers
167 views

Is it normal for resin brake pads to contain small amounts of metal?

I just bought these brake pads from amazon (the resin variant, NOT the semi-metallic variant, see picture), and even though they are supposed (?) to be non-metallic, I can see small amounts of a ...
MaxD's user avatar
  • 750
2 votes
3 answers
792 views

Is it okay to use acrylic paint on hydraulic shimano brake levers?

I got a new hardtail 2 months ago and over the past few days I've been thinking of ways to make it "my own." I thought of painting a design on the brake levers with acrylic paint but am not ...
kingfredrickIIisafalseking's user avatar
8 votes
5 answers
750 views

Align bicycle brake pads

On a new bike with a strange alignment on the front brakes. The right pad is 5-6mm further to the front than left one. Is there a way to align the pads or could something have been bent during ...
Constantin.FF's user avatar
6 votes
1 answer
754 views

How to interpret Shimano compatibility chart?

How does one interpret the delineation of horizontally-aligned boxes on the Shimano compatibility charts? Below is a screenshot (with added blue numbering) for discussion purposes. For example, why ...
ETL's user avatar
  • 165
1 vote
1 answer
71 views

Squeak coming from rear wheel

I have a single speed bicycle that is less than one year old and probably has a mileage less than 100 km / 60 mi. I've recently noticed that the back wheel on the bicycle is giving out a a squeak on ...
Jimib's user avatar
  • 13
8 votes
2 answers
3k views

Why Does Braking to a Complete Stop Feel Exponentially Harder Than Slowing Down?

When braking to a full stop, anecdotally, when stopping from a high speed (ex, 40 km/h to 0 km/h); for the first half (40 km/h to 20 km/h) it feels a lot easier to slow down compared to the second ...
itisyeetimetoday's user avatar
2 votes
2 answers
96 views

How to tell what service my MTB front hydraulic brakes need?

The front Shimano SLX (m7120) hydraulic disc brakes on my trail bikes have lost their mojo. It still brakes but less aggressively than a year ago. Possible causes are worn pads and air bubbles in the ...
ysap's user avatar
  • 171
3 votes
1 answer
258 views

Magura brake pad change: friction noise?

After replacing my worn-out Magura brake pads (MT4 brakes, 7P brake pads), I now have a continous light friction noise when the wheel is spinning (front wheel). The brake disc is brand new as well. ...
Nicolas's user avatar
  • 33
0 votes
1 answer
54 views

Which Banjo bolts do I need for Zee M640 calipers?

I've just ordered a set of Zee M640 calipers to replace the old BR-M596 2 piston calipers on a bike I bought recently. While looking for other parts I need I noticed that the calipers don't come with ...
McDoof's user avatar
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