Questions tagged [disc-brake]

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

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1
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1answer
63 views

What is the ideal brake pad material for a MTB used in both downhill and cross-country/Single-track settings?

all! I and my wife both spend a lot of time doing both downhill and single-track MTB in New England. We both are still on our stock organic pads, and are looking to replace our pads soon-ish. I, ...
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1answer
65 views

Tune mechanical disk brakes TRP Spyre C

On my bike I have SRAM Rival levers paired to TRP Spyre C mechanical disc brake calipers. I'd like to tune them to "brake harder"; currently, I have to press more than half of the way on order to ...
4
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1answer
1k views

Disc brake equipped time trial bikes in grand tour

Why did team Deceuninck–Quick-Step ride disc brake equipped time trial bikes in a relatively flat course through Brussels in stage 2 of the 2019 Tour de France?
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2answers
116 views

Hydraulic discs on commuter bike

Does anyone have any recommendations in favor/opposed to hydraulic disc brakes on a commuter bike? I'm considering building up a new commuter with discs but, as an old-school kinda person, I have no ...
7
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2answers
278 views

Total brake failure - trying to understand what happened

As I've mentioned elsewhere I recently had quite a bad crash - broken collarbone, shoulderblade, and a rib. The circumstances are rather unusual: both brakes failed totally. Crash details for those ...
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0answers
54 views

Rear disk brake fluid leak

I tried to adjust the pads on my rear brakes but it caused some mineral oil to leak. Not sure why. I only used couple screws to allow brake pads to adjust. What could cause the leakage? What should be ...
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2answers
97 views

Removing WD40 from disk brakes - possible? [duplicate]

So I was stupid enough to get a fair bit of WD40 on my disk brakes. I tried cleaning them by removing the wheel, cleaning the disk (with soap) and to spray soap in between the brake pads and wiping it ...
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2answers
115 views

Rotor does not fit between pads after replacing the pads

I was having rubbing noises and after taking out the pads I so they were completly worn out. I have shimano r7070 calipers so according to their specs I found in a local shop the L04C as they did not ...
2
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1answer
92 views

Will replacing 26“ suspension fork with rigid 29”

I have an old Nashbar mountain bike with a suspension fork. I would like to replace the fork with a rigid one. The suspension fork weighs tons and is too squishy since I ride it mostly on trail paths. ...
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2answers
124 views

Is there a standard disc brake mount to disc brake rotor distance?

I'm new to disc brakes and trying to figure out what I need to buy to buy them for a wide fork (135 mm dropout spacing) with IS disc brake mounts and an electric front wheel. I've researched, but I ...
1
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1answer
77 views

Disc brake rub problem

There are a lot of answers for this topic already but I haven’t been able to fix it yet. When my disc brake caliper bolts are loose the rotor does not rub but when I tighten them the rotor rubs. I’ve ...
1
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1answer
61 views

Disc brakes not separating with force

I have Tektro disc brakes on my bike, and I guess I pulled the lever when the back wheel was off. After the pads were not separating I tried to force them apart, but got no luck. Is it because there ...
3
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1answer
81 views

Can I use slider dropouts on my track dropouts?

My bike's dropout/fork-end basically look like this: and I wonder if I could use something like this to convert it into a vertical dropout with a hanger and disc caliper mount: I'll only be using ...
3
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2answers
199 views

Giant Defy Advanced 2 brake replacement

I just bought a 2019 Giant Defy Advanced 2, with Giant's "Conduct SL Disc" brake system and it's the only thing about the bike I don't like, for many reasons. But my question is, are the rotor mount ...
2
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1answer
82 views

BB7 disc brake pads

I have an Avid BB7 front disc brake on a cycle that appears to have a missing inner brake pad. The outer one and the butterfly clip are in place. What might account for this? The cycle is new to me....
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1answer
245 views

Upgrade disc-brake wheels

Just bought new bike with disc brakes. If I buy an upgrade wheelset do brake discs (rotors) come with? Or do you have to buy them separately?
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4answers
2k views

Is disk brake effectiveness mitigated by tyres losing traction under strong braking?

So I understand that disk brakes are superior to rim brakes and this leads to faster stopping particularly in wet weather. I have wondered though, in wet conditions when you wish to stop as fast as ...
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2answers
694 views

Shimano 105 brifters (5800) and Avid BB5 compatibility

Are Shimano 105 brifters (5800) compatible with Avid BB5 mechanical disc brakes?
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2answers
218 views

Should I worry about uneven disc brake pad wear?

My bike was squeaking from the front wheel area when I tilted it to one side or another, but not when I rolled forward or used the brakes. I figured it was probably my disc brakes so I took them out ...
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1answer
61 views

Mechanical disc brake not like it used to be

So basically, I removed a part from my caliper, the one with a spring in it, that is supposed to push the pad onto the rotor. I removed the cover and the spring popped out. I don't know why I did that,...
2
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2answers
122 views

Front disk brake squealing

I know that squealing brakes are fairly typical questions but I have not found a solution yet. My bike is a Haibike with Tektro Auriga Comp hydraulic disk brakes and in recent years I ride in ...
6
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2answers
2k views

Can I convert a rim brake wheel to a disc brake wheel?

I recently bought some Roval SLX 24's from eBay. I made a pretty silly error and didn't check whether they were rim or disc brakes. I need them to be disc brakes. Should they be rim brakes, will ...
2
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1answer
95 views

Brake weirdness on my new E-bike

I very recently purchased an E-bike for commuting to work and other area locales. I understand with any new bicycle there will be some break-in time and after a few rides I did notice the brakes were ...
0
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1answer
72 views

What can cause narrow disc brake gap in TRP Spyre-C?

I have mechanical disc brakes (TRP Spyre-C), second year. Last year I removed and mounted wheels without problems. This year I am all surprised because I cannot adjust the rear brake. Front -- no ...
4
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2answers
832 views

How can I fix brake pads being too tight even after pushing the pistons back in?

I just got delivery of a road bike with SRAM Red disc brakes. It was delivered with little inserts in the brake pads to prevent accidental squeezing of the lever when the rotor was not in. When I put ...
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2answers
186 views

Quick release and tires moving in the frame?

I have a Schwinn Boundary 2017 and it came with a quick-release front wheel. I noticed that no matter how tight I put the skewer it would be in a different position after extreme braking. The bike ...
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2answers
1k views

How to install round brake pads

I decided to change my bike's brake pads myself. My bike has the following brakes: Promax DSK-915. I contacted the online shop I ordered my new brake pads (and my bike last year), before purchasing, ...
2
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6answers
303 views

Loud cracking/creaking sound only when cycling uphill

I've bought a new road bike with disk brakes from Canyon (Endurace AL Disc 8.0) and have it now for a month. Since the beginning it makes a loud cracking/creaking noise. It sounds metallic, almost ...
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3answers
240 views

Hybrid flat to drop conversion advice [duplicate]

I have a Whyte Portabello hybrid, I wanted to swap to an adventure bike with drops. I thought as an alternative it might be easy to convert my existing bike instead, and save a bit of money. It has ...
2
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2answers
303 views

How can I know my brake fluid needs changing?

I have a few bikes with shimano disc brakes. I know changing the fluid is something that can be done and I could probably work out how to do it but I don't know what to look out for to know its time ...
1
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1answer
69 views

Finding compatible parts

I am looking for some guidelines for finding compatible pieces with the ones I currently have installed on my bike. I have for instance a right brake lever (bl-m445) which is leaking oil. It is ...
1
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1answer
64 views

Mechanical disc brake calipers: Removing pads from top side vs bottom side

Regarding mechanical disc brakes, is it preferable to have a caliper with pads removable from the top side? Shimano BR-RS305-F calipers use pads removable from the top; Shimano BR-R317 uses pads ...
5
votes
1answer
325 views

What do I do about a hydraulic disk brake piston that won't retract correctly?

My dual piston Shimano XT brakes are acting strange... One piston won't return to the right place, so one brake pad can be rubbing all the time, which doesn't let my wheel spin freely... I have done ...
4
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2answers
782 views

Are disc brake rotors interchangeable between brands?

I have Tektro HD-R310 brakes, with center lock rims, using the new and only center lock rotors from Tektro TR160-35 Well after 2 months of driving in winter, i already notice some rust on the rotors (...
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2answers
125 views

Disc brake rotor wear limit

What is the wear limit for a disk rotor?
2
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1answer
154 views

Disc brake keeps making ping-like shudder

I have a commuter bike with Tektro MD-285 hydraulic disc brakes. I commute about 14 miles every day (7 in, 7 out) in most types of weather, but I am not a performance cyclist by any means. It's just a ...
1
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1answer
135 views

How to chose the correct hydraulic disc brake rotor size for touring bike?

I have ordered a Shimano Deore M6000 disc brake set. What rotor size should I chose for my touring bike? I am 85 kg and my bike is approximately 15-20 kg.
1
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1answer
68 views

Mechanical disc rotor for CUBE MTB - front wheel : Shimano 559x17-21c

Seeking advice with regards to the size of disc brakes for front wheel. Cube mountain bike. Front wheel: Shimano 559x17-21c. Disc brake: Shimano brake disc sm-rt 10 Centre Lock 160mm Could you ...
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3answers
432 views

How do I know what brake rotors to get for my bike?

In the next month or so I plan on getting the 2019 Trek Crockett 5 as a cyclocross/road bike. I will also be getting some nicer road wheels for the bike so I can swap out the wheels whenever needed. ...
3
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2answers
2k views

How tight should I screw my thru-axles?

I have a new road bike with thru axle and disc brakes (Ultegra). I noticed that depending on the how tight I screw the axle in the frame, the brake disc will be closer to either side of the brake pads....
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2answers
366 views

Convert MTB mechanical disk brakes to hydraulic

I want to convert my mechanical disk brakes to hydraulic. I don't know what size calipers to get. I plan on using the same rotors.
1
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0answers
123 views

Hydraulic disc brakes operating by themselves

When cycling up steep inclines on my mtb sometimes the rear disc brake comes on without me being anywhere near the brake lever. I can tell it's doing it as it's gradual and pedalling becomes difficult....
7
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1answer
1k views

Is there way to fix a disc brake rotor if slightly bent?

Rear disc on my Acid 2016 is little bit bent so while riding it makes a strange noise when that part of disc comes through the caliper. Is there any way fix that or should I buy new disc?
3
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2answers
93 views

Disk brake caliper fit, inboard width of calipers

How can you tell if a disk caliper is going to fit on a given fork? there is an inboard width of a caliper that determines how far into the wheel it is set, ie. make or brake compatibility with the ...
4
votes
2answers
606 views

Cause of severe brake judder?

I've got a 2018 Canyon Exceed (XC mountain bike) that has recently developed alarming judder in the front brake (SRAM Level T), to the point that it makes the forks "twang" backwards and forwards, ...
1
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1answer
176 views

What is causing my disc brakes to loosen when it rains?

I have Tektro Aquila disc brakes, and I have recently noticed that the brakes need tightening every time it rains. I don't see mention of this model in Are there any major outstanding recalls of ...
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2answers
167 views

Easy mounting brake calliper on a Lefty

So I have this second hand Canondale lefty MTB which I love very much. Rode it around home in the woods, but now I visit more and more events and I need to transport my bike by car to the event. ...
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2answers
96 views

Rear wheel is not locking when I am braking

So when I put my rear brake on my wheel doesn’t fully stop (skid) and I can keep on pedalling when I have got it full on. And then the same happens with my front brake, I can have both of them ...
2
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1answer
120 views

Use disc fork on an Lynskey R260?

I got a great deal for a Lynskey R260, that is set for caliper brakes. I'm building my first bike from scratch and am thinking of using disc brakes on the front fork. Is there any reason why I wouldn'...
5
votes
2answers
427 views

Is there anything special about rotor bolts?

I fitted a new rotor to a new wheel yesterday (6-bolt) and didn't have any spare bolts so borrowed them from another bike. As I go to buy replacements, is there anything special about such bolts? I ...