Questions tagged [disc-brake]
Brakes with a disc near the hub and calipers that grip that disc.
523
questions
3
votes
3answers
593 views
Wax or ceramic coat disk brake caliper?
I am currently in the process of building a new road bike and I want to preserve the nice look of my new hydraulic Shimano Ultegra brake calipers. Normally I'd just coat the the area I want to ...
5
votes
3answers
212 views
What model of rear brake caliper do I need?
This old beater bike is missing one part.
The front rotor and caliper are there.
But the rear caliper is missing.
What model of rear caliper do I need?
If you are able to identify the model (...
0
votes
3answers
65 views
Mechanical disc brake caliper round pads 23 mm diameter
I’m trying to find round brake pads of ca. 23mm diameter. They are for a Valk bike brand sold online in Australia. There is no brand or model evident on the brake caliper or levers. Almost certainly ...
8
votes
3answers
2k views
Removing wd40 from disk brakes
I sprayed WD40 on my disk rotor and now my rotor and pads are contaminated and now my rear brakes are practically useless.Is there any way to fix the problem without swapping out the brake pads and ...
0
votes
2answers
104 views
Is it worth switching from V brakes to disc brakes? [duplicate]
The bike that I am getting has v brakes and I was wondering if it would be worth the money to get disc brakes for it. Can someone please help me here?
1
vote
1answer
55 views
Avid Jucy 3 Piston Removal (seized)
I have a set of Avid Juicy 3 calipers that I have sucessfully replaced the pistons and seals on. Getting the pistons out of one of the calipers was not so easy though, and I ended up drilling the ...
1
vote
2answers
87 views
Are these N04C pads worn out or not?
I don't know how to tell myself so need help, please. It does look like there is still metal to be used for braking, but the brakes barely grab these and instead make a squeaking sound.
I have ...
0
votes
2answers
163 views
Are road mechanical disc brakes safe to pair with a steel gravel bike
This is a follow up to this post: How to increase brake responsiveness on Microshift style STI brifters paired with mechanical disc brake
I have mountain bike mechanical disc brakes on a steel gravel ...
2
votes
4answers
94 views
How to increase brake responsiveness on Microshift style STI brifters paired with mechanical disc brake
I have a set of microshift style STI brifters. They are paired to a generic brand mechanical brake set on a Kent Nazz gravel bike.
I can't seem to get the brakes to be as responsive as I would like. ...
4
votes
3answers
914 views
Stripped brake mount on fork lower
I noticed that one of the bolts used to attach the brake to the fork is stripped and found many solutions but wanted to know if continued use will make it worse with and without repairing it. Also ...
1
vote
0answers
104 views
Disk brake issues
I’m new to disc brakes and noticed my braking power decreasing. Took the pads off and they look like this. Do these lines indicate anything? What is a used disc brake pad supposed to look like? What’s ...
2
votes
2answers
53 views
Fixed piston on promax render r caliper doesn't adjust up or down
I have a bike setup with Promax Render R disc brake calipers. They use mechanical action to brake (no fluid). There's an active piston that's actuated by the brake lever, and a fixed piston that sits ...
3
votes
1answer
68 views
Hydro brake piston fluid volume Shimano vs. Campy vs. TRP
I am trying to mount some Hope calipers to some custom brake levers.
Hope say the calipers - RX4+ - can be used safely with Shimano and Campy levers in their mineral oil form. I want to know if the ...
0
votes
1answer
75 views
Disc brakes rub under load
Recently I started to have issues with my gravel bike, which I bought in April 2021, a Specialized Diverge Carbon Comp.
The first issue happens to be a clicking / creaking of the crankset when under ...
4
votes
1answer
208 views
Why are disc brake calipers behind the wheel axle?
After reading this (anxiety inducing) question on a disc brake dislodging a front wheel on a brand new bike with a QR axle I wondered why the brake calipers are placed behind the axle in the first ...
17
votes
4answers
4k views
Accident from front wheel locking up on brand new bike
I purchased a brand new hybrid bike with mechanical disk brakes a few weeks ago
I have ridden the bike for a few weeks without any issues on city streets with potholes and elevations from bridges
I ...
9
votes
3answers
2k views
I know I am missing a rotor but I don't know what to attach it to
I got a cheap second hand bike for my son as its not worth repairing his current one as he outgrew it. At the time, I knew it needed a new inner tube which I was going to replace.
Only now I noticed ...
10
votes
3answers
2k views
Front brake causes violent shudder
My bike is equipped with disk-brakes. It also has a fork with suspension.
When I apply the front brake, my fork vibrates violently, as can be seen below:
I've adjusted ...
3
votes
3answers
455 views
How to easily install rear disk brake wheel without service stand
I have a road bike with hydraulic disk brakes. I really struggle to install the rear wheel with the cassette and disk colliding with the frame. I spent about an hour yesterday trying to get the wheel ...
1
vote
2answers
45 views
mechanical disc brake replacement for Schwinn Protocol 1.0
I am fixing up an older Schwinn Protocol 1.0 for a friend and I need to replace the mechanical, post mount disc brake caliper. (I took apart the old one and it is missing a magnet and in spite of ...
1
vote
2answers
126 views
Disc Wheel w/ rim brake to Disc Brakes?
I have a zipp disc wheel that is for rim brakes. Is it possible to convert it to a disc brake?
I’m thinking it might be possible by replacing the hub/mount for the disc brakes but I’m not sure on that....
3
votes
1answer
137 views
Why is my hydraulic front disc brake clicking?
I noticed that there's a mysterious click that seems to be tied to wheel rotation when riding my bike. It is barely audible when there's no traffic nearby. I initially assumed that it's a hub or the ...
7
votes
2answers
160 views
Are clear hydraulic brake lines available for sale?
Since all brake lines are not see through, the only way to determine if your brake needs a bleed is by feeling the brakes. If they are "squishy", then you need a brake bleed.
I'm of the ...
5
votes
3answers
594 views
Lubricant spill on disc brake
As the title suggests, I was lubricating the gears and chain, and I accidentally dropped some of the oil on the rear brake disc. I didn't notice it then, and took the bike out for a spin. That's when ...
4
votes
2answers
1k views
Anyone know what a replacement Disc pads might be for Tektro HD-R290?
The brake pads say F10BS but they've been really hard to find (and unavailable on Tektro site). Does Shimano (or anyone else) offer a resin version of this brake pad as this one is metal-ceramic?
4
votes
3answers
84 views
Rear disk touches the caliper mount
I am putting a new caliper on and the had to get an adapter. Anybody know why it rubs and how to solve it?
14
votes
3answers
1k views
Can't get enough braking power after lots of adjustment
Hi :) I just bought a 2015 Specialized Diverge A1 with almost completely stock components. With some adjustments everything seems to work well except for the disc brakes.
This bike has a Shimano ...
0
votes
1answer
335 views
Why did I lose braking power after hitting a curb?
Recently I hit a curb on my bike. I heard a cracking sound, my front disk brake (cable) felt stiff, and I could feel a lot of resistance from the front wheel. I left it alone for a few minutes, and ...
2
votes
2answers
219 views
Disk brake and wheel is moving: is my fork too long?
In the links I gave below, the website is in French but you can change the language.
Following this thread
I bought new bike components to build my own bike. In particular I bought Surly Steamroller ...
6
votes
2answers
431 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 ...
1
vote
1answer
161 views
Disc brake mount/adapter bolt length
My bike's frameset has IS mounts. The mounts are 9.6mm thick. I bought a pair of IS to post mount adapters but they don't come with bolts. The adapters are 11mm thick. How long should the bolts be?
...
8
votes
8answers
1k views
QR Skewer orientation
Sheldon Brown's site suggests that QR skewers should be installed with the levers on the left side of the bike, "so the derailer [sic] doesn't interfere with it" and that "Usually, the ...
0
votes
1answer
57 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 ...
4
votes
4answers
872 views
Replacing disk brake pads with multi-tool only
During my cycling week I only had my multi-tool with me. Back home and intending to replace the brake pads, I realized that I have to use pliers if I want to unbend the end of the cotter pin without ...
2
votes
1answer
151 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:...
2
votes
3answers
442 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,...
0
votes
4answers
157 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?
3
votes
3answers
2k views
I got a leak on my shimano 105 R7020 STI
My caliper rotor push oil back in the STI. All of the sudden mineral oil started leaking.
Do you know SKU of this part? (click for larger views)
0
votes
1answer
78 views
Looking for a good mountain bike for my daugher. Want disc brakes and Fork lockout [closed]
My daughter is a teenager and we love going biking, either on trails or during camping trips. We are not hard core bikers, but she is ready for a bike upgrade as she is using a 20" wheel bike ...
3
votes
4answers
3k views
I mistakenly put WD40 for my disc brakes and now pads not anchoring as well as before. Any solution?
I heard it wears off after a few rides but it is still not gripping firmly. Is there any solution for this? I also saw using rubbing alcohol. Is that sufficient?
3
votes
2answers
772 views
Very narrow gap between pad and brake rotor
I have just retired my Tektro brakes (13 years of service) and replaced with a pair of cheap Shimano MT200.
I have a problem with extremely narrow gap between the disk and pads. The gap is so narrow ...
0
votes
1answer
144 views
The outside diameter of the brake rotor rubs against the caliper
I have upgraded my bike with a new front suspension fork. Bought and fitted an adaptor from Shimano as the fork is laid out for 160mm (Postmount 6) and my disc front wheel brake rotor is 180mm. ...
0
votes
1answer
147 views
What features make a disc brake caliper unsuitable for use with other than resin pads
Shimano says its Tourney mechanical disc brake is "designed for resin pads only". What is it about the design of a brake caliper that makes it suitable only for resin pads?
2
votes
2answers
813 views
How to clean brake pads properly to stop squeal?
I bought a new MTB recently that came with TEKTRO HD-275 hydraulic disk brakes, after two weeks it has started to squeal, then I clean both front and back pads with Isopropyl alcohol and 120 sandpaper,...
2
votes
2answers
297 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
vote
1answer
104 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
513 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
709 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
1k 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
votes
1answer
274 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?