Questions tagged [brakes]

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

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6
votes
1answer
481 views

Which brake system is this

I have two brake systems I think on my bike. On the front I have a threaded stud and on the back a road brake. Here is the front and the back (click for large version): As you can see on the back the ...
5
votes
2answers
302 views

Too much Travel when installing Mechanical Disk Brake

I am replacing the cable for the rear mechanical disk brake on my brothers MTB, because it is all chewed up. Now when loosening the cable on the rear brake (barrel adjuster on lever and brake all the ...
3
votes
2answers
455 views

Brakes loose, cable hanging out

I used my brakes the other day and this happened (see photo). Is there any way to fix this? I’m unable to use the brakes at all with this issue.
2
votes
1answer
80 views

Should brake lever move if you press the (V-brake) calipers together?

The "normal" way is pretty clear: you press the brake lever, it pulls the bowden, which then forces the V-brake calipers together. However, the question is: should it work also the other way ...
5
votes
3answers
627 views

Mechanical Shimano Deore Disk Brake - How to fix lack of bite/grip

I have a frustrating issue with my MTB and want to ask how I can go about actually diagnosing this issue. I have a MTB Shimano Disk brakes. These are mechanical and one pad is pushed into the rotor ...
1
vote
1answer
142 views

Squealing of rim brakes on a bike [duplicate]

My bike for 2 days started to squeal whenever I use my back brakes it has been really annoying and I am trying to fix it. Please give me any suggestion that can help this problem
2
votes
3answers
222 views

Change old external ultegra brake cables to under the tape brakes

Is it possible to change my old external ultegra brakes to integrated brakes ?
5
votes
2answers
2k views

What (kind of?) brake lever is this?

I'm curious as to whether or not anyone knows who makes this brake lever or if anyone makes one like it. I know the bike in the image is a Montreal-based company called Bassi that primarily sells ...
2
votes
0answers
76 views

SRAM Hydraulic brake stuck (with a changed bite point) after landing/impact

I experienced a weird problem on my SRAM level t 2 piston brakes. I like hopping my bike around, e.g. bunny hopping onto curbs. Sometimes, if the impact is hard, the brake lever would have reduced ...
12
votes
7answers
10k views

Relative weight of disc brakes

People say (for example here) that disc brakes are relatively heavy, giving this as a reason for not using them. How much heavier than rim brakes are disc brakes? Is the extra heaviness in the brakes,...
6
votes
3answers
714 views

What is MTB/roadbike specific in brake cables?

Basically as the title says. Why won't a "roadbike" bike cable fit into an MTB, or vice-versa? Consider this one. What would happen if this was mounted in an MTB (or any other kind of bike)?
4
votes
1answer
92 views

Is it safe to install these V Brakes? Arms don't sit flush with bosses

Replacing my old V Brakes, got sold some Shimano BR-T4000s. What I found is they don't sit quite flush on the bosses. There's an internal ring that's a bit larger, that ring is just a bit deeper on ...
2
votes
2answers
738 views

brake seems slack but pad is already close to rim

This is a v-brake. I have to press the brake lever all the way down for the bike to stop, but if I try to adjust the brake arm by pulling cable out a bit more towards outside, then the pad would be ...
10
votes
3answers
11k views

Brake callipers not long enough to allow adjustment of pads

I upgraded the standard Tektro brakes on my SE Lager to Shimano 105s. The braking performance is vastly improved. I also have Charge Plug wheels, rather than the stock wheels. However I've noticed ...
6
votes
2answers
518 views

Is the banjo bolt the same between the Shimano XTR and Shimano Saint rear brake caliper?

Earlier today, I went to install a brand new Shimano Saint caliper in place of an old XTR that's leaking from the pistons, only to find that Shimano doesn't include the banjo bolt... Do the XTR and ...
0
votes
1answer
119 views

replace shimano st-ef-41-l with shimano alivio left shift

My shifter st-ef41 is broken the only available shifter is the Shimano alivio or the Shimano acera. please advise Asap thanks
0
votes
2answers
85 views

diamondback cobra 24 rear brakes squeal horribly what can I do to at least tone it down

diamondback cobra 24 rear brakes are squealing loudly all the time it doesn't matter if it's wet or dry and the brakes are lined up perfectly and appear to be new. The brakes are not marking the rim. ...
15
votes
6answers
41k views

How do I prevent my hydraulic brakes from getting pressed/damaged when the wheels are off?

When I was buying my bike, the technician in the shop told me not to press the brakes when the wheels are off (detached), otherwise the brakes will get damaged (I don't know how). I need to detach ...
0
votes
1answer
60 views

Looking for recommendation of disc brake to replace Formula RX

I have a relatively old hardtail MTB installed with Formula RX brake system and rotors SM-RT53 (160mm) / SM-RT53M (180mm). Now I have to replace the brake system and would like to have some advice. To ...
7
votes
6answers
3k views

Safety of taking a bicycle to a country where they drive on the other side of the road?

Bicycles are different in countries where people drive on the other side of the road. Suppose I have a bicycle and I am moving to a country on another continent where people drive on the other side. ...
1
vote
2answers
327 views

Are there downsides to cross-top brake levers? Compatible with all mechanical-hydraulic disc brakes?

I have a Genesis Croix de Fer 20 from a few years ago with the following specs: Brakes: TRP HY-RD mechanical-hydraulic caliper w/160mm TR160 rotors Levers: Shimano Tiagra ST-4700 I would like to fit ...
12
votes
6answers
2k views

First road bike: mech disc brakes vs dual pivot sidepull brakes?

I'm keen to buy my first road bike to do some rides around London (evening and weekend rides for exercise and travel), I've narrowed it down to 2 within my price range: Example: Carrera Zelos from ...
2
votes
4answers
569 views

What is the quantifiable benefit of compressionless brake housing?

If you had a compressionless setup (cable disc for example) that you measured gave you 100 braking units (whatever unit that would be) when the lever was maximally activated, what would be the number ...
2
votes
3answers
490 views

Hydraulic brake bleed fail - try again or replace?

I bled and completely replaced the fluid on a set of Tektro Orion hydraulic brakes, using Shimano mineral oil. Before bleeding, one worked a little bit, and the other didn't at all. In my impression,...
2
votes
1answer
156 views

Why do disc brakes stop faster in dry conditions?

I have heard that bikes with disc brakes have shorter stopping distances even in dry conditions, such as the comparison in this video: GCN - How Much Faster Can You Stop With Disc Brakes? At about 1:...
0
votes
4answers
164 views

Replace v-brakes with disc brakes [duplicate]

I would like to know whether I can replace my old v-brakes with disc brakes. Do I need to also change the wheels or something else?
1
vote
1answer
1k views
7
votes
3answers
2k views

Will an Shimano M8000 brake lever blade fit a M8100?

Will an Shimano M8000 brake lever blade fit a M8100? I broke my left blade, it's a Shimano XT M8100. I can only seem to find the replacement M8000 part. I don't want to replace the whole unit, seems ...
3
votes
2answers
1k views

Is it ok to hang the bike by the frame, if the bowden is on the bottom?

Related: there are plenty of Q&A's (both here and on other sides), according to which, apparently, it is ok to hang a bike by its wheel. What I didn't find though is, if it is ok to hang the bike ...
5
votes
3answers
23k views

Troubleshooting Hydraulic Disc Brakes

I replaced the fluid in my hydraulic disc brakes as they would not work within the first 10 minutes of cycling and would gradually sharpen up. I suspect they had air in the system. They were sharp ...
2
votes
1answer
122 views

Brake housing end cap size

I'm replacing my rear brake housing on a Giant Defy (2010) but finding that the new end cap/ferrule does not fit. The old end cap was fused to the frame so while I still have it, it's not in great ...
4
votes
2answers
1k views

What type of brake is this?

Update - As Daniel pointed out in the comments below, this is an unusual type of roller cam brake that is fixed to the fork using a single bolt through the fork rather than cantilever fixings I have ...
4
votes
3answers
1k views

Why aren’t there more tricycles with rear disk brakes (between the two rear wheels)

Just curious if anyone has seen these before, it would be a rare bird. I'm looking for a trike where the mount for the rear disk brake is mid-axle between the two rear wheels. What are the technical ...
0
votes
1answer
95 views

Identify my rear aero brake

I'm looking to buy a new aero brake, after the noodle holder on my old set has snapped (and apparently i need to replace the whole thing). Problem is that i can't find the model anywhere. I've looked ...
5
votes
2answers
719 views

Should there be play in rear brake

My rear wheel can move about an inch when the brake is completely locked. The movement is in the connection between the hub and the disk. As you can see in the picture below, the disk is held to the ...
5
votes
1answer
1k views

Why did Shimano name them V Brakes?

Why did Shimano name and trademark their variety of direct pull brakes: V-Brakes®? Is it because of shape? The two arms look kind of like a V? That seems a fail as they are more parallel than most ...
31
votes
15answers
4k views

Braking one-handed to signal down steep traffic-heavy slope

I've just recently picked up biking and will be cycling to work when I start in a few weeks. One thing that's really bothering me on my route is a very steep hill that gets very busy during rush hour. ...
2
votes
5answers
1k 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 ...
6
votes
3answers
2k views

Why doesn't this V-Brake fit my frame?

As part of a bike rebuild I'm working on, I replaced the old cantilever brakes with new Shimano V-brakes. The problem is that the new front brake doesn't seem to fit with the wheel. The rim walls are ...
6
votes
3answers
2k views

Do hydraulic road brake levers exist that do not include shifters or dropper post buttons?

I have a single speed bike (Genesis Day One ~2013) with mechanical disc brakes. I would like to upgrade to hydraulic disc brakes. Do hydraulic road brake levers exist that do not include shifters or ...
11
votes
14answers
94k views

What is safer...coaster brakes, rim brakes, or fixed gear braking?

I currently have a 'regular' bike, i.e. a bike with hand rim brakes but I've been more fascinated recently with single speed and fixed gear bikes. One of the reasons that I've held off on getting on ...
11
votes
3answers
7k views

What causes and how to fix wandering bite point on Shimano hydraulic brakes?

For the last two months and less than 600 km of riding I have been using a pair of new Shimano SLX BR-M7120 "high power" 4-piston hydraulic disc brakes. Yesterday I have noticed that the bite point of ...
0
votes
1answer
609 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 ...
8
votes
5answers
2k views

Front tire & downtube clearance - extremely dangerous?

I recently moved cities and met someone to buy a used "vintage" bike from them. While test riding at a slow speed I gradually applied the brakes. The front brake seemed to jump from light ...
8
votes
7answers
4k views

Is it normal to need to replace my brakes every few months?

My journey to work has uphill and downhill segments in both directions (a fact I'm sure to share with my future grandkids one day). In two of these segments, I have to brake pretty hard to arrest my ...
19
votes
5answers
95k views

How often should hydraulic disk brakes need bleeding?

The brake handles for my disk brakes became very loose four months after I bought the bike. The bike shop bled the brakes and put new oil in them, which sorted it. They're feeling a bit loose again (...
5
votes
3answers
793 views

Barrel Adjuster Strategy - What's the best way to use barrel adjusters?

I was taught that barrel adjusters are to be used as an on-the-road way to adjust brakes or derailleurs. I think the exact quote was "Leave the barrel adjuster for the customer to use on the road&...
3
votes
1answer
457 views

Tektro HD-R210 Bleed Kit Compatibility

I'm looking for a bleed kit compatible with Tektro HD-R210 brakes. I believe this is an OEM part - it doesn't look like there's a lot of information available for them. The levers are labelled to ...
3
votes
2answers
488 views

Shimano GRX lever with cantilever brakes

Will Shimano GRX levers work with cantilever brakes? Related question here but answers more about shifters.
4
votes
3answers
547 views

Replacing a lost disc brake pinch bolt

While replacing the cable for my front disc brake, I lost the bolt and plate that attaches the cable to the calliper. In this Park Tool guide, they call it a 'pinch bolt' — labelled E in the image ...

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