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

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6
votes
1answer
401 views

Do mechanical disc brakes suffer from heat-induced fade?

The other day I read a question about heat induced brake fade in hydraulic disc brakes caused by too much braking on long, steep descents, which is something I have also experienced when cycling in ...
6
votes
2answers
8k views

Should rotors have no rub at all?

I just installed a new front disk brake and the rotor rubs a bit once per rotation. If I take the rotor off and place it on flat surface, it seems totally flat but once installed I can see/hear it ...
6
votes
2answers
2k views

What do I clean disk brakes with?

I know I need to keep the disks clean on my bike, but if I've got them covered in grease, what should I clean them with?
5
votes
2answers
764 views

Disc brake producing noise after a crash

After little crash I'm hearing strange knife-like sounds from my disk brakes, but the wheel and brakes doesn't look damaged. What should I do?
5
votes
3answers
14k views

How do I get my hydraulic disc brakes working well again

I just bought a new bike (my first brand new one ever) a few months ago and a while ago I decided to give it a wash and after that my front hydraulic brake hasn't been working as strong as it used too....
5
votes
1answer
1k views

Should brake fluid come out of a misaligned disc caliper piston?

I have a shimano XT hydraulic disc brake system. While servicing it I took out the pads an checked the pistons in the caliper and noticed that only one is extracting. After a few pulls on the lever ...
5
votes
3answers
4k views

Can I run rim brakes on a disc rim?

I'm trying to buy a front wheel which will work with both disc and rim brakes so that I can use it on my cross bike (with rim brakes) and my mountain bike (with disc brakes) with a dynamo hub to power ...
5
votes
4answers
709 views

Issue replacing Avid BB7 disc brake pads

I just replaced the brake pads in my BB7 disc brakes for the first time. I read up, watched videos, til I grasped what I was doing, and tried more than a handful of times. On the front brake, I can ...
5
votes
1answer
239 views

Using different style disc rotors with the same brake calipers

I currently have a set of TRP Hy/Rd brakes that came with 6-bolt style rotors. I am interested in purchasing a different wheelset that uses Shimano's centerlock style hubs. One wheelset would serve ...
5
votes
1answer
146 views

How do I get rid of weird rubbing noise on my cx bike?

Recently I got the Giant Revolt 3 and have been riding it for a few days now. I have lately noticed that there is some rubbing noise when I apply the brakes. If you look at this picture (might be a ...
5
votes
2answers
3k views

Adjusting disk brake pad positions

I have had experience on a couple of mountain bikes when I could not adjust the disk brake caliper positions far enough left or right to keep the pads from rubbing the rotor a little. Is this common ...
5
votes
1answer
4k views

How do I get rid of the noise on my Hayes Stroker Trail brakes

I recently bought a new bike that came with Hayes Stroker Trail hydraulic brakes. From day one they were squeeky and not very grippy. I wrote it off to the burn in period that most disc brakes ...
5
votes
2answers
573 views

B01S brake pads for Deore A-M615 brakes?

I bought replacement pads for my Deore A-M615 brakes. They installed just fine. But after cleaning the old pads, I saw that they are G01S, while the new ones are B01S. G01S, the original: B01S, ...
5
votes
1answer
1k views

How do I correctly align the brake disc with the callipers when replacing my quick-release wheel?

My bike's front wheel is quick-release (QR), but the rear has a traditional skewer (because of the hub gears). It also has disc brakes, and as you'd expect, there isn't a lot of clearance between the ...
5
votes
1answer
342 views

Shimano Hydraulic disc brakes- Lever compatibility

I am looking for practical advice on compatibility between various Shimano hydraulic disc brakes, especially the lever assembly. Currently I have two separate sets, one M446 Left lever, attached to a ...
5
votes
2answers
503 views

Fixing hydraulic disk brakes, what to check first?

I have a 10-year old bike, fitted with hydraulic disk brakes. The bike has been actively used for around 4 years only though. Recently, my brake levers started to have more and more "play" before the ...
5
votes
1answer
1k views

Brand new disk brakes are barely stopping the bike

I just built a mountain bike with Avid BB7 brakes and Shimano V-brake levers. I used the exact same configuration on another bike, and it worked beautifully. But on this one, the brakes are just weak ...
5
votes
3answers
348 views

How much runout is acceptable in a disc brake rotor?

I'm trying to sort out pad dragging / noises in Avid BB-7 mechanical disc brakes and I'm wondering how much runout in the rotor is acceptable? Right now I have about 0.05 mm (measured with a Park DT-...
4
votes
3answers
1k views

Is it safe to mount fender stays and disc brakes on the same bolt?

I bought these fenders recently: The rear fender works fine — there are enough mount points to support my brake, kickstand, rack, and fender. But when the salesperson sold me the fenders, we ...
4
votes
3answers
32k views

Can you put disc brakes on road forks originally intended for calipers?

I've decided I want a disc brake, at least on the front, which seems a good enough reason to go bike shopping, but am I overlooking the possibility of fitting a cable pull disc brake to my current ...
4
votes
3answers
164 views

How to buy replacement disc brakes

In looking at replacing my disc brake rotors, and looking online I see there are different sizes available (between 180 and 203 mm). My question is, what dimension do I measure on my existing rotor? ...
4
votes
2answers
9k views

What to consider when changing V-brake for a disc brake?

The frame of this bike has the capacity for V-brakes and disc brakes. There are some problems with the rear V-brake and I am considering installing a disc brake instead (just for elevated coolness). ...
4
votes
2answers
3k views

Disc brake pads - steel vs aluminium back plate

I am looking at a set of Organic Disc brake pads. The brake pads come with a steel back plate or as an aluminium back plate. Why would I choose one over the other?
4
votes
1answer
92 views

What is the difference between disk brake rotors?

Differences in rotors include size, thickness, pattern cut out of the metal and attachment to the hub. What other differences are their and why? Reason I ask is I recently built up a budget mountain ...
4
votes
1answer
2k views

What do I have to know, to replace my hydraulic disc brakes with new ones?

I want to buy a new hydraulic disc brake for my old mountain bike, which already has a disc brake. As I am very far away from any bicycle shop I want to buy the parts on the internet. The shipping ...
4
votes
3answers
2k views

Is a pad spacer needed when installing disc brake pads?

I need to replace my disc brake pads on my Shimano XT brakes. This seems like a pretty straight forward procedure, and I have all the tools needed except for the pad spacer. Do I need this to install ...
4
votes
1answer
1k views

What is lever throw and cable slack?

In a guide for adjusting Avid BB7 mechanical road disc brakes, it said: Only use the barrel adjuster at the brake lever to adjust for cable slack. For lever throw, use the outboard adjustment knob....
4
votes
2answers
6k views

How do I align my front brake disk with the caliper?

I have manual Avid disc brakes. I took my front wheel off like I've done hundreds of times. When I put it back on the wheel is aligned properly with my fork, but the disc presses against one of the ...
4
votes
3answers
4k views

Converting an existing cyclocross bike to disc brakes

I have a bike (Surly Crosscheck) that is used for commuting and cyclocross. As it's a bit older and disc brakes were not legal for 'cross until recently, it has cantilever brakes for optimal mud ...
4
votes
2answers
189 views

Disk brake pads too thick?

I have an old Magura Julie disk brake. It seams that new pads are too thick for the brake. I already tried 2 different types. But when I insert the new pads the gap between the pads is completely ...
4
votes
3answers
4k views

Buying brake levers, how do I find the correct ones for my bike?

I took a hard spill the other day on my mountain bike and snapped my left hand brake lever in to pieces. The ones that snapped are stock alloy rubbish that came with a Specialized Hardrock 2010 Disc ...
4
votes
2answers
266 views

Intermittent disc brake rubbing

My partner has a Kona Sutra with Avid BB-7 disc brakes. The front brake rubs intermittently on the rotor. I just went to see if I could figure out what the problem was and right now the disc runs true ...
4
votes
3answers
322 views

Disc brake freezing at end of ride

At the end of my last ride the back brake started rubbing hard on the disc. It almost feels like the brake cable had popped out of the lever. The bike is relatively new to me, and I am not very ...
4
votes
1answer
78 views

Replacing Quick Release skewer with through bolt axle

I have a 2013 Pinarello Dogma 65.1 Hydro. The bike has disc brakes. The bike was built with quick release skewers on Mavic Aksium wheels. I have just read that Pinarello actually recommends 9mm ...
4
votes
1answer
154 views

Troubleshooting Noise from Avid BB-7 Road Disc Brakes

I'm trying to track down a dragging sound from some Avid BB-7 brakes on a Kona Sutra. The hub is a Shimano Alfine DH-S501 dynamo hub with an SM-RT82 Centerlock disc. The noise sounds like a dragging ...
3
votes
5answers
4k views

A bike for city commute - disc brakes, bar-end shifters, tires

I'm planning on buying a bike for city commute. My commute to work is approximately 12km (7.5 miles) one way. I live in Vancouver which means: I'll be riding in rainy weather frequently. I'll be ...
3
votes
4answers
567 views

Should disc brake rotors be removed when packing bike for travel?

I've been looking at a few tutorials on packing a bike to take it on a plane, and most of them make no mention of disc brakes. One did specifically mention disc brakes, and recommended taking the ...
3
votes
4answers
5k views

Buying first hybrid bike; better to put $ into components or disc brakes?

I'm looking to replace my 2008 comfort cruiser with a fitness style hybrid. My budget allows for maxing out at $500 (on the new fitness hybrid bike itself). I ride rails-to-trails with the kids, ...
3
votes
1answer
1k views

Require a star tool to remove disc rotor

I need to change my disc brake rotors. I discovered that I require a star tool. Here is a picture of my rotor bolts. Can someone point out a tool that will fit this? Prefer a bike tool. To give some ...
3
votes
3answers
243 views

Center Lock to ISO Disc Adapters

We've got a bike where the front hub (Shimano Alfine dynamo) uses a Center Lock rotor and the rear hub (also Shimano, go figure) uses an ISO rotor. The front hub is giving me fits trying to sort out ...
3
votes
2answers
1k views

Can disc brakes be considered safe for road group rides?

I know aero bars are considered unsafe for peloton, does this extend to disc brakes whose rotors can be hot and sharp? I'm not talking about races, just casual training rides: is it reasonably safe ...
3
votes
3answers
5k views

could I mount a different manufacturer brand rotor to use with my brakes?

I've a tektro draco hydraulic brakes on my mtb and I would like to know if it is possible to mount a different brand rotor to use with my brakes?
3
votes
4answers
245 views

Ease of servicing disc vs. rim brakes

How easy is it to keep a mechanical (non-hydraulic) disc brake system working at home with a set of "normal" (not bike-specific) tools, especially compared to rim brakes? Discs seem to be currently ...
3
votes
3answers
3k views

How to deal with long pre-bled brake line?

I bought and installed a set of pre-bled hydraulic brakes onto my bike to replace the mechanical discs that came with it. My future plan is to buy a new bike, transfer the brakes to my wife's bike and ...
3
votes
3answers
25k views

How to adjust Avid Elixir 1 hydraulic disc brakes?

I have a Trek X-Caliber and the rear disc is rubbing a little. So I want to adjust the brakes so it doesn't rub and make things a bit easier of course. I see many videos about brake adjustment but ...
3
votes
1answer
1k views

How can I unbend, straighten or flatten a bent rotor?

Some possibilities, which I haven't tried: try to bend it back into shape with my hands while still mounted take off the rotor, sandwich it between a couple of wooden blocks, put some weight on it ...
3
votes
1answer
155 views

Brake hard on new cycle

I saw someone after buying a new bicycle (a hybrid), pulled the brake as hard as he could for few seconds and dragged the cycle along while braking like that, 1 brake per centimeter. Why did he do ...
3
votes
1answer
3k views

How do to determine if an adapter is needed for disc brakes and rotors?

I have an old older (not too old) bike that already has disc brakes, but I would like to replace them with a totally new set and new rotors. How can I determine if a given replacement (caliper and ...
3
votes
1answer
71 views

upgrade from MF-TZ21 to 7 Speed cassette freehub

I'm trying to save costs so I want to upgrade to 7 speed 11-28 Cassette to keep the same shifters, dealer says I need a new Freehub, new 7 Speed Cassette, new chain AND NEW DISC BRAKES, why do I need ...
3
votes
1answer
541 views

SRAM Guide brake lever won't return

I have an SRAM Guide brake (rear) that after bleeding, the brake lever won't return quickly. At room temperature, this is barely noticeable, but when the temperature climbs, or the bike is in the ...