8 votes
Accepted

How can I keep my brakes centered?

The key to getting a side pull brake to stay centered is to get the pivot bolt centered and tight. You have the added challenge of getting the pivot bolt centered and getting the fender centered at ...
David D's user avatar
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8 votes
Accepted

How to prevent disc brake caliper from slipping while tightening caliper mount screws?

The technique I have had the most luck with is to gradually tighten the mounting bolts. Tighten the top bolt until it just starts to hit the caliper. Do the same to the bottom bolt. Keep alternating ...
mikes's user avatar
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8 votes
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Facing flat mount fork

Yes, flat mount brake mounts can absolutely be faced and sometimes need to be. The angled pad gap you show in the picture is the primary indication that facing is needed. In facing operations it's ...
Nathan Knutson's user avatar
8 votes

Caliper brake lubrication

How confident are you with hand tools? I've had several sticky rim calipers, and one longer-lived solution is to disassemble and clean the insides of the pivot. Downside, there's a lot of parts and ...
Criggie's user avatar
  • 124k
7 votes
Accepted

Caliper brake lubrication

As you surmised already, you are suffering from a sticky caliper, and have diagnosed the solution, that is, a little lubrication. I think most any lubricant would do, but some suggestions would be: ...
Ted Hohl's user avatar
  • 6,142
6 votes

I was leaning the bike against the wall

The bike must be able to handle such usage. And much worse. What can happen with some moderate force is moving the caliper very slightly out of alignment. Then it must be re-aligned. Out of alignment ...
Vladimir F Героям слава's user avatar
4 votes

How to prevent disc brake caliper from slipping while tightening caliper mount screws?

I struggled with this at first. It helped to have everything clean, and to have good threads that engaged smoothly. I also used loctite which lubricated the threads on the way in and eliminated any &...
Criggie's user avatar
  • 124k
3 votes

Replacing Tektro MD-M280

If you want to replace your mechanical by another mechanical the main specs to pay attention to are the mounting points and cable pull. They differ between "MTB" and road standards: MTBs use ...
Rеnаud's user avatar
  • 20.2k
3 votes

What limits the rotor size in flat-mount brakes?

Disk brakes create a lot of torque on the frame or fork, where the calipers are mounted. Neither the caliper nor the disk are the limiting factors, but the frame or fork, that have to be designed to ...
Burki's user avatar
  • 1,510
3 votes

Shimano BR-MT400 caliper upgrade?

You can replace just the calipers. If you want to re-use the hoses, your options are any post-mount Shimano calipers with an in-line style caliper hose connection. If the hoses were the minimum ...
Nathan Knutson's user avatar
3 votes
Accepted

What's the significance of "Inside" vs "Outside" caliper hose connection?

I think the main purpose is to help with the hose routing. Disc brake calipers are generally outside of the chainstay, so having the hose on the inside of the caliper reduces the angle formed by the ...
MaplePanda's user avatar
  • 15.5k
3 votes

Why is there no pressure in brakes after leak?

If fluid was removed, it means there's air there now. If it was a lot of fluid, it means there's a lot of air in there. Air being easily compressible, enough air in brake system causes brakes to not ...
juhist's user avatar
  • 18.7k
3 votes

Can I replace my rear cantilever brake with a caliper brake?

I suspect you could do this. There is a brake bridge with a hole on centerline. You will need a caliper brake with enough "reach" to get down to the rim brake track, and enough width to get ...
Criggie's user avatar
  • 124k
3 votes

Can I replace my rear cantilever brake with a caliper brake?

You can't do this. First, by caliper brake, I assume you mean a road bike-style rim brake. To mount one of those, you need a bridge between the seat stays, and it needs to be drilled at the right ...
Weiwen Ng's user avatar
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2 votes
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Role of a mysterious clip on a front brake caliper screw

this manual (https://www.manualslib.com/manual/1590153/Shimano-Br-M8000.html?page=12#manual) suggests the clip is supposed to keep the bolt from coming off. I'm not sure it is really capable to do ...
Burki's user avatar
  • 1,510
2 votes

Brakes rubbing on ride after centering, brand new bike

It could be a lazy piston, although these happen mostly for bikes that have actually been used, as opposed to bikes that are new. The most likely case is that you have a bike with two brakes, you use ...
juhist's user avatar
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2 votes
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Schwinn Kids Bike brake caliper spring not attached. Help!

Unless my brain is broken, that spring is distorted. When in place it should look something like: The spring needs to push the arms back open. Its uncompressed state should be more flat, as opposed ...
Nathan Knutson's user avatar
2 votes

I was leaning the bike against the wall

Worst-case scenario, you bumped a brake component out of alignment and the only symptom will be that you hear the brake disc rubbing (in which case, have a qualified mechanic inspect the brake and ...
Scott Hillson's user avatar
1 vote
Accepted

Which brake levers and brake calipers to replace Sram s-series HRD700 (postmount)?

A lot here revolves around how much value you place on keeping the bike set up with SRAM 10. Keeping SRAM 10 road bikes going is increasingly difficult. Most of the legacy support components for them ...
Nathan Knutson's user avatar
1 vote

Rusty bolts/screws on Shimano Claris brake calipers

Below you'll find an Exploded View diagram of a BR-R2000, the Claris caliper brake. Note that the bolts, numbered 1, 8, 9 and 12 are pertinent to the caliper itself, while number 11 is a bolt for the ...
Jeff's user avatar
  • 10.2k
1 vote

How to prevent disc brake caliper from slipping while tightening caliper mount screws?

There are two things you can do to significantly mitigate this issue. The first is to engage the brake, as strongly as (safely) possible, while tightening the caliper mount bolts. Assuming you ...
Austin Hemmelgarn's user avatar
1 vote

Shimano 105 Disk Brake Failure

It's very likely the root issue is damage to the ceramic pistons. Caliper seal issues on ceramic pistons Shimano brakes almost always are. Genuine replacements are not available, though third party ...
Nathan Knutson's user avatar
1 vote

I was leaning the bike against the wall

Sounds like the seat/chain stay touched the wall rather than the caliper. If it was a controlled lean - as you say there was not much force involved - and no damage (scratches, dents) or damage ...
DoNuT's user avatar
  • 4,431
1 vote

I was leaning the bike against the wall

The disc brake rotor and the brake cable+housing are the most fragile parts back there. The frame tubes and the caliper should be quite strong, especially close to the rear axle. As long as the rotor ...
Michael's user avatar
  • 27.4k
1 vote
Accepted

Brake piston fell out during bleeding - anything to fix?

Getting a piston back in doesn't have too many hidden steps. You want to get everything clean with appropriate means - typically this would be a detergent wash that's safe for disc brakes and/or ...
Nathan Knutson's user avatar
1 vote
Accepted

Is overhauling dual-pivot caliper brakes due when the centering screw is ineffectual?

There's not a generic answer because the sole unifying design element of dual pivot brakes is that there's a center pivot for one arm and an offset pivot for the other. The way the pivot hardware and ...
Nathan Knutson's user avatar
1 vote
Accepted

What limits the rotor size in flat-mount brakes?

From a purely numerical standpoint, the mounting interfaces should be able to handle any rotor size. From this website, the highest torque generated seems to be around 100Nm, which for a 34mm spacing ...
MaplePanda's user avatar
  • 15.5k
1 vote

Brake caliper not springing back all the way

Based on the text and your edits, the caliper doesn't have enough spring force to open itself up fully. When its connected to the lever on the handlebar, there's a bit more tension added via the inner ...
Criggie's user avatar
  • 124k
1 vote

Shimano BR-RS805 hydraulic disc caliper alternatives?

It is regularly stated that almost all Shimano hydraulic calipers are interchangeable excluding perhaps the DH ones, Saint, Zee etc. Therefore, you can choose one suitable for your frame and be sure ...
Noise's user avatar
  • 13.9k

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