Questions tagged [hydraulic-disc-brake]

Hydraulic disc brakes use fluid (either mineral oil or automotive brake fluid) to transmit brake pressure from the handlebar levers to the disc brakes on the wheel.

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2
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2answers
82 views

Disc brake rotor scraping against mounting bracket

(My question is related to Rear disc brake rotor rubbing against caliper frame mount? but I hope to provide some more context & photos.) I have a Rocky Mountain Edge mountain bike (possibly 2011 ...
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1answer
49 views

How to adjust hydraulic disk brake lever reach during bleeding?

During a crash I have bent my adjustment knob on Sram Code brakes and now after bleeding the lever is a bit too far away for my liking. The knob is bent and can't be turned. If I'll reduce the ...
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3answers
114 views

Changing SRAM Rival brifters to flat bar - which hydraulic brake levers?

I've got a gravel bike, the Planet X London Road, with SRAM Rival 1x11 groupset. I'm thinking of converting it to a flat bar. From what I have read, any SRAM 11 speed shifter should work, as the ...
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1answer
100 views

Where is the grease on my front brake caliper coming from?

I've had a new road bike for three months to commute. I live on the east side of Hawai'i island so I'm often riding in the rain. A few weeks after I first bought the bike the front brakes started ...
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1answer
64 views

Shimano hydraulic hose - BH90-SB compatible with BH90-J/JK

My problem, I have a complete M7000 (MTB) brake set that uses SM-BH90-SB hose, and now I want to connect a 105er BR-R7070 brake caliper that needs SM-BH90-JK-SSR or SM-BH90-J-SSR hose. Are the two ...
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0answers
173 views

Hydraulic Brake Hose Size Standards

I am looking to buy some (approx 30 meter) hydraulic brake hose for general use (fixing brakes) and would like to know what size (inner diameter/outer diameter) would be most suitable for the bigger ...
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1answer
78 views

I would like to upgrade my Shimano disc rotors from 160mm to 203mm. How to pick the right rotors?

My bicycle came with the BR-MT200 (https://www.bike-discount.de/en/buy/shimano-br-mt200-disc-brake-set-721603) brake set: hydraulic levers, 160mm rotors. I'd like to upgrade to 203mm, but I don't ...
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1answer
60 views

TRP Hy Rd brake : why won’t actuator arm return properly?

The actuator arm on my TRP Hy / Rd front brake no longer returns to the correct position. Even with no cable attached, it requires a bit of help to return to its resting position. The result is that ...
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1answer
237 views

Pros and cons of mixed hydraulic/mechanical brakes vs pure hydraulics

Title of question is self-explanatory. Recently, it was added to the market brakes that are an hybrid mix between the mechanical Bowden steel cable and hydraulic system, which their oil tank is near ...
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2answers
327 views

Alternatives for mineral brake fluid / oil (in a pinch)

In case you don't have 'original' bicycle specific brake fluid on hand (e.g. "Magura Royal Blood"), what might be a good alternative to use (in a pinch) in hydraulic (disc) brakes? (for brakes that ...
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2answers
171 views

Upgrade 160mm to 200mm disc brake rotor

I want to upgrade my mtb's front brake to a 200 or 203mm brake rotor. current setup (180mm): My front fork's posts are for a 160mm rotor (without any adapters/brackets, with the brake caliper bolted ...
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1answer
120 views

Bleed port repair on Shimano road shifter?

I noticed that a small amount of mineral oil had leaked from the bleed port on my Shimano road shifter. I inspected the bleed port screw and saw that it was loose. The threads on the lever appeared to ...
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1answer
159 views

Hydraulic Disc Brake (how to choose correct model)

I recently broke off the lever of my front brake and am looking for a replacement lever or front brake. Need some input/suggestions from more experiences riders. Some of my questions: What are the (...
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0answers
70 views

Differences and effects of brake lever offset

I've seen some flat bar brake levers where the the pivoting plane of the lever blade is offset and not in line with the center of the handlebar's cross section. What's the purpose for such design? ...
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0answers
60 views

Clamp width of new Shimano brake levers

Can anyone measure the width of the clamp (the dimension parallel to the bar) of the new XT M8100 12 speed Shimano brake levers? I want to know the amount of 'bar space' the clamp takes up. The ...
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1answer
147 views

Disc brake just a little too tight

I have pushed the hydraulic pistons fully out, but after a single firm squeeze of the brake lever, they ride slightly too tightly, such that rear wheel doesn't spin freely. It rubs a little bit. How ...
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1answer
91 views

Is master cylinder hydraulic fluid level critical (Shimano)?

I managed to successfully bleed a Shimano hydraulic brake but used an improvised kit instead of the official Shimano one. Since I used a regular syringe instead of the funnel+plunger system which may ...
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1answer
101 views

My front disc brakes are rubbing despite my efforts

I tried everything Reset pistons Reseat caliper position Credit card method Brakes become very tight after a few squeezes Update: I went to the bike shop twice, they reset the brakes twice, ...
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1answer
176 views

Hydro brake disk blackening

I have had my bike for about 2 months now and about 2 weeks in the rear brake stopped working properly and I thought it just needed a bleed. The shop assistant showed me that my disk had oil on it ...
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3answers
182 views

What factors to take into account when choosing a hybrid bike?

I've decided I'd like to start commuting to work, but I'm not sure what factors I need to take into account when choosing a bike. I figured a hybrid bike suits my needs best, since I will be riding on ...
5
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1answer
395 views

What causes and how to fix wandering bite point on Shimano hydraulic brakes?

For the last two months and less than 600 km of riding I have been using a pair of new Shimano SLX BR-M7120 "high power" 4-piston hydraulic disc brakes. Yesterday I have noticed that the bite point of ...
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1answer
83 views

Can I use a Shimano BL-MT200 lever on a Shimano BR-M446 brake caliper?

I have a leakage on my lever, and can't find any Shimano BR-M446s for sale. Was wondering if Shimano BL-MT200s were compatible.
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3answers
1k views

Is it safe to run disc brakes up front on a mountain bike that lacks a disc caliper mounting point in the rear?

Upon sharing my thoughts in an answer to a Bicycle Stack Exchange question, I wondered about my suggestion to use a disc brake up front on a frame that, lacking a disc brake caliper mounting point at ...
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2answers
211 views

Combining Deore XT 9-speed shifters with Deore XT BR-M8000 (I-Spec-II)

I wanted to convert my trekking bike to a mountain bike, and replace the Deore XT V-Brakes with disc brakes. However, the bike still has a perfectly functional Deore XT groupset (9-speed; unsure about ...
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2answers
109 views

Replace Shimano MT500 Caliper

I'm not finding a huge amount of information online about doing a caliper (only) replacement. My rear Shimano MT500 is having issues and I urgently need to get it working, therefore I've purchased a ...
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1answer
116 views

Shimano MT500 leaking from bleed port

My rear Shimano MT500 hydraulic disk brake has acting up for a while. After doing a full bleed and new set of pads it would be fine for about 2 weeks then start rapidly losing performance and ...
2
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1answer
310 views

Best type of brake pads during winter conditions for disc brake bikes

I'm going to be riding my bike daily during the rainy Belgian winter (-2°C to +5°C). If it snows or freezes the roads will be covered with salt. I'm using the 105 R7000 series hydraulic disc brakes. ...
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1answer
119 views

Leak in my disc brakes

I had a small crash and the other day I checked my bike for damage. I found that there is very small leak on my brake hose where it meets the lever. I tried pushing the lever but nothing came out so ...
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1answer
171 views

New hydraulic disc brake has less stopping power than old rim brake—why?

Recently, I upgraded to a Rockrider 540 bicycle. My previous bicycle (a similar but simpler model) had rim brakes, this one has hydraulic disc brakes. On the new bicycle, the stopping power of the ...
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3answers
302 views

Is this bike suitable for a male

Is this bike suitable for men?
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1answer
2k views

Does this bike use hydraulic brakes?

Hi. I want to buy this bike. Is it hydraulic?
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2answers
376 views

Swapping position of Shimano shifter and brake lever

I have Shimano Acera shifter and Shimano MT200 hydraulic brakes. The brake lever is mounted outside and shifter is mounted inside of handle bar. See picture below. I want to swap position of this two ...
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3answers
162 views

Air transport of a MTB with hydraulic brakes

I would like to transport my MTB on an airliner's cargo hold. What are the requirements concerning hydraulic brakes, do they need to be flushed?
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1answer
278 views

Will an MTB hydraulic brake lever be compatible with road hydraulic brake caliper?

I'm looking for a brake caliper that will be compatible with an XTR brake lever. As I browse through Shimano's line of lightest brake caliper, I found that Dura-Ace is the lightest but it's a road ...
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1answer
347 views

TRP Hy/Rd callipers rubbing

I’ve just installed a set of TRP HY/RD brakes and I can’t seem to stop the front ones from rubbing the rotor. I’ve tried realigning the calliper but it seems to be rubbing on both sides not just one. ...
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2answers
80 views

Using a new but potentially dirty olive and barb when shortening hydraulic brake hosing

I wish to shorten the hose on a hydraulic brake system (model is TRP hylex) i have an unused TRP olive and barb, however unfortunately they have been knocking about in a tray with an old chain and ...
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2answers
436 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 ...
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0answers
463 views

Sram Guide R brakes getting spongy

Long time Shimano brakes user, I've recently (few months ago) got a new MTB with Sram Guide R brakes. At the beginning those felt great - not as "biting" as Shimano SLX / XT I'm used to, but feeling ...
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1answer
231 views

Hydraulic mtb-style brake lever on drop handlebars

tl;dr Does anyone know of an existing hydraulic brake lever (eg (like this)) that can clamp on a 31.8mm bar or can anyone think of a way I can hack/bodge/modify one? I'm thinking similar to how CX ...
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2answers
357 views

Why are brake levers still bent in form to accomodate more than one finger?

I thought of it for a while now. Our brake levers look like this: Why aren't they designed more like this? Is there a purpose for the extra space? Is two-finger braking still essential in hydraulic ...
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1answer
140 views

What are real advantages of brake hose junction connectors?

I just received my new brake callipers and handles. They come pre-assembled with hoses and a "hose junction connector". These are the same as Dan Lloyd has in the below video: ...
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1answer
55 views

Brake system replacement

Currently I have a Tektro Auriga brake system. I don't like the Auriga brakes at all, so I decided to replace them with Deore XT BR-M800. At front I have 180mm disk and between the caliper and fork ...
2
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1answer
196 views

140mm rear rotor for bike packing

Currently my bike has cable actuated disc brakes, which I will upgrade to Ultegra 8070 callipers and RT-800 Ice Tech rotors. I use the bike for road, some gravel and bike packing. The current rotors ...
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2answers
207 views

Disc brake pistons won't stay in

I'm trying to replace my brake pads but when I try to push one piston in, the other one will come out and when I push it back in the previous one will do the same... how do I fix this so that both ...
3
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3answers
107 views

TRP quadiem brakes - lever not in place

Today I got my new YT Tues bike and I've noticed that front brake lever came off the piston and I have no idea how to get it in place if it is even possible? Is it defective or can I fix it? Rear ...
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1answer
85 views

Convert urban/hybrid with hydraulic disk brakes from flat handlebars to drops [duplicate]

I have a urban style bike that I want to convert from flat bars to drops. Can anyone suggest brake levers that: will be compatible with the BR-M355 calipers that came with the bike will be ...
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1answer
58 views

Cannondale MTB hydraulic brakes

Brake lever pulls straight in to handle bar and brake not working, have tried putting more fluid in but it’s still not working,has anyone got any ideas?
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2answers
186 views

How to get grease out of my brake rotor holes

I got an as-is bike used that came with disc brakes. Both brakes squealed so I cleaned both rotors and both sets of pads. That fixed the back one but not the front one. I removed the pads and noticed ...
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2answers
1k 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 ...
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1answer
118 views

Do dirty brake pads cause them to wear faster?

I have a road bike and a mountain bike which both use shimano B01S brake pads. The road bike has done 4000km and the mountain bike has done 320km. The brake pads on the road bike look brand new while ...

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