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

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3k views

What is the difference between different types of disc brake pads

I've seen several different descriptors for disc brake pads: Metallic, Semi-Metallic, and Organic. What is the difference between these types of disc brake pads?
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2answers
350 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 ...
4
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1answer
179 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
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1answer
571 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 ...
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2answers
2k 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 ...
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3answers
2k 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
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1answer
103 views

Disc brake maintenance

For some days now I am observing the decreasing performance of my disc brakes on my MTB. Additionally, braking is extremely loud (squeaking). I don't think I have oil or fatty substances on the discs. ...
4
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3answers
241 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 ...
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1answer
168 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 ...
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5answers
2k 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 ...
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4answers
507 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
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1answer
882 views

Require a star tool to remove disc rotor

I need to change my disc brake rotors. So i discover 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 ...
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2answers
720 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 ...
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3answers
2k 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?
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2answers
1k 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?
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2answers
1k 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 ...
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2answers
4k 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). ...
3
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1answer
1k 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
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2answers
663 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 ...
3
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1answer
681 views

What is the difference between “front” and “rear” disc brake?

When I browse on-line bike shops disc brakes are listed as "front" or "rear" e.g. here. I have never noticed any difference between front and rear brakes - disc or V-brake, hydraulic or mechanic. ...
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2answers
3k 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 ...
3
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1answer
2k views

Hydraulic disc pads binding on disc

I took the front wheel off my mountain bike and the hydraulic disc pads closed. I’ve opened them back up and replaced the wheel. However, the pads seem to now be closing up all the time and binding on ...
3
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2answers
1k views

Will any Avid brake bleed kit work with my Promax brakes?

I need to replenish the fluid in my front brake on my Whyte Portobello (Promax Hornet disk brake) after all of the fluid leaked out through my own mistake. I'm looking at kits like this on eBay, ...
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1answer
355 views

Is my disc brake caliper correctly mounted on the frame?

I have been in the process of upgrading my bike a bit. A friend of mine convinced me to upgrade my brakes from my stock Shimanos to some disc brakes. After having a look around and asking question, I ...
3
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1answer
317 views

Disc brake pad and rotor compatibility

The SM-RT53 rotor should be used together with resin pads. If it is used with metal pads, the pads will wear out very rapidly. from Shimano BR M-416 disc brake manual How do I know if a rotor ...
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2answers
244 views

What to do when there's no more adjustment room on disc brakes

I just built up a new frame and discovered that, due to slightly different geometry the rear disc caliper can't be adjusted so that it doesn't rub. Basically I've got them all the way over to one side ...
2
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1answer
665 views

New bike: disc brakes squeal in wet conditions when NOT braking! Normal?

I just bought a new bike, and a lot of people seem to have problems with disc brakes squeaking when they brake in wet conditions--however, mine seem to squeak the whole d*mn time. The bike is fresh ...
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3answers
3k views

Disc brakes make noise

My disc-brakes on my mountain bike sing/scream when I brake. I have tried to clean them, but it didn't work. Should I replace the disks or the brake pads? Is there a better (cheaper) way to fix this.
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4answers
352 views

Disk brake brakes work poorly after annual maintainance

The disk brakes practically don't brake anymore. If I pull the brake lever as hard as I can, the wheel still turns if I push the bike forward. Is this normal? Do they need a "brake in" period? ...
2
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1answer
222 views

Can I get a wheel dished without the bike?

I broke a spoke on my rear wheel, and ended up messing with it a bit too much - I may need to get it re-dished. If it's a common market model bike, can I simply take the wheel into my bike shop, ...
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2answers
1k views

Can I run a wheel with a 130mm hub on a mountain bike with 135mm spacing?

I'd like to build a wheelset that would work on my cross bike or my 29er, assuming I had disc brakes on the 29er and rim brakes on the cross bike, is there any way I could use a 130mm hub (that fits ...
2
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1answer
246 views

Fixed (inside) front disk brake adjustment

I got a new bike for Christmas (12-25-12) and it is a VICTORY VEGASJACKPOT w/medium-travel front fork and full suspension. The front disc brake rubs against the inside pad (the one on the fork side of ...
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1answer
754 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 ...
2
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1answer
103 views

Is it a good idea to sand off the rotor when exchanging disc brake pads?

During operation, disc brake pads cut grooves into the rotor. When replacing the pads with new ones, would it be a good idea to smoothen the rotor with sandpaper(e.g. grit 200 then grit 800)? What is ...
2
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2answers
1k 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 ...
2
votes
2answers
359 views

135mm rear end, 130mm rear wheel, Titanium frame

I'm looking at a Ti frame with a 135mm rear end, disc brake. And I have invested in wheels for my commuter, which is disc brake... but a 130 mm spacing. Is 5 mm enough of a concern -- impact to the ...
2
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1answer
309 views

How to practice jumping over cars with disc brakes and SPD shoes?

This question here raises a sub-question, to avoid accidents. I am looking for some safe ways to practice jumping over cars. I use SPD shoes and disc brakes because I have noticed that I can burst ...
2
votes
1answer
206 views

Uneven Disc Brake performance

I'm using Hayes CX-5 Mechanical Disc brakes with Avid The G2 CleanSweep Rotors on my cross bike. I believe the Pads that come stock with Hayes CX-5 brakes are semi-metallic. I'm experiening uneven ...
2
votes
2answers
477 views

What is the minimum tire width for a 18 mm disc rim?

I have a Croix de Fer cross bike that I purchased for touring with luggage; for commuting to work, lighter touring and some mild offroad riding. While it is nowhere stated officially, I can see on ...
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2answers
1k views

Grinding sound on new disc brakes

I have a new bike, probably a month old, which has Hayes cx 5 disc brakes. I've noticed that the front brake pad is making a grinding sound when I brake at low to moderate speeds. What could be ...
2
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2answers
1k views

Disc brake pads are loose in the calipers, is this a problem?

I recently bought a new commuting bike (Norco ccx3) which has mechanical disc brakes (Promax DSK-715 Road Mechanical Disc). Thus far I've been pretty happy with them. In the last couple of commutes, ...
2
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2answers
129 views

How do I mount this Topeak rack onto this road bike with disc brakes?

I've browsed several closely related questions already, but haven't found one quite like my issue yet. I have the following rack, a Topeak Tourist for Disc Brake bikes (with a matching Topeak trunk ...
2
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2answers
267 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 ...
2
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1answer
365 views

Tubus Rack Compatibility on a 29er With Discs

I have a Trek 520 with a Tubus Tara rack on the front and a Tubus Cargo (not the newer Evo model) rack on the rear. I'm thinking about trading in the 520 for a 29er with disc brakes, probably a Salsa ...
2
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2answers
628 views

Ferrule to mount hydraulic disc brake hose to frame

Is there some kind of ferrule(or similar) that can be used to fasten a hydraulic disc brake hose to the braze-ons of a frame that used to have v-brakes? The hose is to thin to stick to the braze-ons, ...
2
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1answer
10k 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 ...
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2answers
94 views

Adjusting disk brake positions

I recently got a new bike (below). It's rather latest technology for me. I got it assembled from a supermarket, but had to do almost all the adjustments myself. I don't know what I did wrong with ...
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2answers
744 views

Hayes Sole Disk Brake sudden loss of pressure.

I braked hard today and felt the pressure in my disk brake drop very suddenly. Since that point the brake has not been working with no action at the calliper and little pressure in the lever but ...
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3answers
271 views

Mechanical-hydraulic hybrid brakes

I've heard about Mechanical-hydraulic hybrid brakes but didn't find any examples. Are they exist? If yes, are they comparable with hydraulic?
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1answer
384 views

Do I need better “springs” on my disc brakes?

After 20 years commuting on old/cheap bikes, I finally evolved up to a nice solid touring rig with cable disc brakes (Avid BB5). I love the bike and the brakes. They're much easier to maintain, ...