Questions tagged [disc-brake]

Brakes with a disc near the hub and calipers that grip that disc.

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2
votes
1answer
69 views

How to clean break pads properly to stop squeal?

I bought a new MTB recently that came with TEKTRO HD-275 hydraulic disk brakes, after two weeks Its started to squeal, then I clean both front and back pads with Isopropyl alcohol and 120 sandpaper, ...
2
votes
2answers
101 views

Is a “universal” rotor compatible with all types of disc pads?

What is a "universal" disc rotor? One that is compatible with all types of brake pads?
1
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1answer
38 views

Do you need to open the calipers of a hydraulic disk brake in order to clean it?

I would like some advice about cleaning disk brakes. Recently when I've braked I've occasionally heard a noise as though air is being released, not a squeak or croak but it sounds like there is ...
4
votes
3answers
349 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 ...
8
votes
2answers
487 views

Having one wheel set with 6 bolts rotors and one with center locks?

I'd like to purchase a second wheel set for my bike: to have one wheel set for road, and one for cross/light MTB, and swap them easily depending on the kind of ride I plan. My bike uses 6 bolts disk ...
4
votes
1answer
177 views

Why do my disc brake calipers fall out of alignment?

Every so often the Shimano 105 7020 hydraulic disc brakes on my road bike start to make a metallic grinding noise and I can feel additional resistance when riding. The culprit has always been ...
3
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1answer
59 views

what does “pre-bled” mean in the context of a cable-actuated hydraulic disc brake

I am shopping for disc brakes and looking at cable-actuated ones. What would "pre-bled" mean in that context?
3
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2answers
129 views

mechanical disc brakes and bikes with internal cable routing

One review of TRP Spyre that I read said the brakes didn't perform well until the reviewer installed compressionless-housing brake cable. Is that the general consensus? Jagwire says their ...
2
votes
1answer
53 views

How to identify whether a TRP Spyre mechanical disc brake is the post-recall version?

For online (bargain) shoppers who face the risk of possibly buying old stock, are there any markings on the post-recall TRP Spyre that could be used to clearly identify it as the new version?
0
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0answers
78 views

What does “unisex” mean in the context of mechanical disc brakes?

I see the term "unisex" used with mechanical disc brakes. What does the term mean in that context?
2
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5answers
156 views

what features do I give up if I buy the mechanical disc brake caliper costing one fourth that of another manufacturer?

I've always had rim-brakes on my bikes but now I'm assembling a bike with a frame that has disc mounts only. What features or qualities am I sacrificing if I opt for the $40 mechanical disc brake ...
5
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4answers
1k views

Is it normal that front wheel bends when front disk brakes are applied?

When I apply front disk brakes I see slight bend in the rim and wheel. Is this normal or I have a low quality parts.
5
votes
1answer
140 views

Magura rim caliper and Shimano hydraulic road lever compatibility

I have a trekking bike with a slightly short reach for me. On the other hand I wish to get a drop bar bicycle. I could check on this bike that the position is good with drop bars. On this bike I have ...
0
votes
1answer
124 views

Why does a Shimano centerlock rotor have free play?

I have an electric road bike that has SM-RT64 Shimano centerlock brake rotor in the front. I have noticed that when I press the front brake and try to rock the bike back and forth, there's some free ...
-1
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3answers
127 views

Big vibration with Tektro Auriga brakes

About a year ago I swapped the v-brakes with a Tektro Auriga kit. I immediately made a mistake by not properly bedding in rotors and pads, doing "powerful" brakes, sudden stopping of the ...
-1
votes
1answer
83 views

What is this hardware inline with the brake cable?

The brake caliper is an Avid BB7_MTN, but there seems to be some kind of additional element inline with the brake cable. From what I can gather looking at the picture, there's an electric cable coming ...
1
vote
2answers
101 views

Brake pad too low on rotor?

I just bought a new Clarks CFR-06 rotor to try to improve my crappy Tektro Auriga, but it seems that I made another bad choice. After just a couple of minutes of trials, I noticed that the pads are ...
6
votes
2answers
186 views

Which Shimano Centerlock Rotors Work with Avid BB7 Mountain Brake Calipers?

I spent a lot of time trying to figure this out, so I thought I would post this to maybe save others the hassle. The problem: Avid BB7 Calipers don't play nice with many of the popular Shimano ...
2
votes
0answers
38 views

Clarification needed on hydraulic disc caliper and lever compatibility

I have a Scott Solace road bike that uses Shimano BR-RS805 hydraulic disc calipers. The hose spec is BH 59. I want to change from drop handlebars to Jones H handlebars. I will need new brake levers. ...
0
votes
3answers
52 views

Will 180mm rotors fit my Carrera Vengeance Ltd. Edition bike?

So I would like to get Clarks M3 hydraulic disc brake set but the only size available is 180mm but i am not sure what to measure to see if this will fit my carrera vengeance ltd edition 16 inch frame ...
4
votes
3answers
432 views

Are center lock rotors less likely to rub or resonate while riding than 6-bolt rotors?

I use 6-bolts hub with 203mm rotor and despite it is well aligned and rub free sometimes when riding (even on flat surface) there is vibrations coming (I guess) from crankset and/or road enough to ...
2
votes
3answers
251 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 ...
3
votes
2answers
155 views

Buying Cervelo P2 vs P-Series [closed]

I'm looking to buy my first tri bike and am considering between a Cervelo 2016 P2 (rim-brake) and the new 2021 P-Series (disc-brake). The P2 is brand new, but it's an old stock my LBS has on hand, and ...
3
votes
1answer
87 views

Disc brakes installation

I have got IronHorse Maverick 3.2 bikes with v brakes and I want to upgrade to disc brakes. The fork and frame both has Is mount so they should be able to get calipers on them with the right mount ...
-7
votes
2answers
106 views

Why did my 28-spoke front wheel lost all tension but rear only some?

I have an electric road bike with disc brakes. Its stock front and rear tires have only 28 spokes and a slightly deeper than ordinary rim. The hubs are cheap non-Shimano hubs, but their flange ...
3
votes
3answers
515 views

Disk brakes swap on a new road bike with rim brakes

I am planning on buying an Atomic Covert road bike. Can I put disk brakes on it? Are there adapters for rigid forks/road bikes or do I need to replace parts?
7
votes
1answer
159 views

Pad spacer and mechanical disc brakes

My bike, a Trek, has Tektro mechanical disc brakes. Do I need to insert a pad spacer when the wheel is removed to prevent the brake from locking if the lever is accidentally moved?
1
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0answers
45 views

new Clarks m2 hydraulic disc brakes won't retract when brake lever pressed

I just fitted a new set of Clarks M2 hydraulic disc brakes. I aligned the calliper to make sure the rotor doesn't rub the pads when the wheel is spinning. I then pressed the brake lever, when letting ...
2
votes
1answer
82 views

Barrel adjuster cable housing sticking out, why?

I've been trying to adjust my front brakes and when I released the brake lever arm (on the disc brake) and moved the arm to the furthest back position, I noticed that the cable housing at the brake ...
4
votes
4answers
224 views

Commuting and recreation scooter with handlebar brake lever

I am looking for a commuting / recreation scooter but have no experience of using one. I am very familiar with riding a bike and using handlebar-mounted brake levers. My budget is sub-£100 (GBP) and ...
0
votes
2answers
68 views

New bike disc brake noise

I have just bought a brand new bike which was put together in the store and the disc brakes, which I have never had before, make a very slight scratching noise. Does this need altering or is it fine ...
5
votes
2answers
113 views

New disk pads glazing during bed-in procedure

My bike is equipped with Sram Force Etap AXS and I've been using some BBB pads for quite a while. My bike shop recommended these, stating that they were compatible (and yes, they worked pretty well). ...
4
votes
2answers
158 views

Which bolt to use when aligning disc brakes?

I am struggling with a rubbing disc rotor on a new bicycle. Which bolts should I use when trying to align the caliper? The ones I marked in red, or the blue ones? I tried to use the red ones so far, ...
4
votes
3answers
462 views

What do I do if I get chain lube on my brake pads?

I was being extremely stupid and accidentally applied a little chain lube to my brake pads? I tried to sand them down a little and cleaned the disc rotor with rubbing alcohol, but the performance is ...
4
votes
1answer
473 views

Determine Rotor and Caliper Size

I bought a used mountain bike and it does not have a caliper or a brake lever for the front. How can I go about finding out what will work on this bike and where is a good place to buy online?
1
vote
1answer
130 views

Disc brakes are squeaking

I bought a new bike that has mechanical disc brakes. They were squeaking really hard. I tried aligning the caliper. Now the squeaking noise is gone form the front brake, but not from the back brake. I ...
1
vote
1answer
117 views

Front wheel is not aligned and touching the brake line

On my bike the front wheel is not centered below the handlebars, instead it seems to be more on the left side. Weirdly that's also the side where the disk brake is located and the wheel is touching ...
-1
votes
1answer
746 views

Canyon Endurace CF SL Disc: 7.0 vs 8.0 [closed]

Mission: On the market for a new road bicycle. Since May 2020 I stepped up my cycling and will probably at least triple the yearly kilometres (3k?). So I want to treat myself and I decided to invest a ...
1
vote
1answer
45 views

Lost bearing on disc brake for Kona Jake The Snake 2016

I have this bike, and I appear to have lost the bearing on the front wheel, causing the disc brake to rub up against the fork when I'm riding. (I'm not a bike expert, so sorry if I'm using the wrong ...
0
votes
2answers
95 views

Hydraulic disc brake clicks once when I pull the brake lever and the braking force is very bad

I have a brand new Trek Marlin 5 (1-2 months old) with hydraulic disc brakes and the rear brake doesn’t work well and when I pull the brake lever, it clicks once somewhere in the frame (cables inner ...
2
votes
1answer
153 views

Croix De Fer fork replacement

I own a 2019 Croix De Fer 10 and would like to replace its fork since I recently damaged it. I went on Genesis's website to try and find out exactly what kind of fork it is, I am quite new to bike ...
0
votes
1answer
2k views

What bolt size are Shimano brake caliper bolts?

A front caliper bolt on a shimano disc brake caliper came out while riding, and went lost, while the remaining bolt, which was a little bit longer and thus protruded a little was completely bent. ...
2
votes
1answer
48 views

What threads are used on Avid BB5 barrel adjusters?

I thought I might replace the locknut on my front brake barrel adjuster because the current knurled one needs pliers where it sits in an awkward place behind the mudguard stays. But it's an unusual ...
2
votes
0answers
70 views

Examples of disc brakes causing injury in pro races

Before disc brakes became UCI legal there was a lot of people arguing that they were more dangerous than standard v brakes in bunch races. Often it was highlighted that a very hot spinning metal disc ...
2
votes
1answer
57 views

Why do my front wheel/disc brakes squeal/moan when NOT braking

1 year old Trek 520 with mechanical disc brakes. When I am pushing the bike around, both with and without loaded panniers, the front wheel frequently makes a low pitched "squealing" sound--...
1
vote
1answer
101 views

Unfixable brake disk rubbing

I ride a Rabeneick TS5 2017 Alfine 8, bought in 2018, with about 5000km on it (mostly commuting on asphalt, in all weather (mostly dry), some easy forest trails). It has BR-M395 hydraulic disk brakes ...
11
votes
3answers
1k views

Why are Disc Brakes better in the Rain?

It is generally accepted that disc brakes will offer better performance in the rain on a road bike. But from reading many articles on the topic of disc vs rim brakes, I have yet to find any ...
2
votes
1answer
76 views

Disc brakes making a banging sound on steep descents

I got a new bike a few months back. Its a cheap decathlon Rockrider mountain bike so I am not expecting anything too special. However I have noticed that going down steep descents, even slowly, the ...
0
votes
0answers
97 views

How can I determine what postmount I need for my fork / rotor for front and back

I am planning to purchase Shimano Saint BL-M820 + BR-M820 hydraulic disc brake set for my Specialized Stumpjumper Comp and I have no idea what post-mount to buy since I changed my fork and I am pretty ...
1
vote
3answers
2k views

Front disc brake rattling noise

I recently purchased a brand new Scott Genius 950 at a local bike store. After bedding in the brakes, I noticed a rattling noise while riding coming from the front disc brake. I brought it back to ...

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