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
49 views

Can't bed in my hydraulic brake pads

I washed my bike with Rhino Goo fast action cleaner and fairy liquid in a spray bottle mixed with water. I used a hose pump with no pressure, so no liquid will go into my bearings etc. After I washed ...
14
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4answers
3k views

Are bleeding kit syringes single use?

I recently bought a bleed kit (for shimano brakes from shimano) and used it on my hydraulic brakes (successfully as far as I can tell). During cleaning up I noticed the syringe says it was for single ...
3
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1answer
56 views

Sticky/Not fully returning ultegra r8070 brake lever

Got this used di2 equipped bike with what seemed to be just a spongy front brake. Bleeding as per manual. Still "mushy". Emptied the line and disconnected the hose. The lever just don't ...
2
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2answers
81 views

My hydraulic disk brake pads are rubbing too hard on the rotor after taking the wheel off

so these are Shimano saint hydraulic disk brakes and i took the wheel off the other day to clean it, put it back on, and for some reason the pads are rubbing overly hard (without actually pulling the ...
2
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1answer
104 views

Is losing power when pulling Shimano GRX lever a bleed problem?

Recently I had an accident on my bike, and my front brake 11-speed, front brake GRX 600 shifter isn’t braking well anymore. The shifter took a bit of damage in the fall. Initially it didn’t shift, ...
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2answers
99 views

Is the banjo bolt the same between the Shimano XTR and Shimano Saint rear brake caliper?

Earlier today, I went to install a brand new Shimano Saint caliper in place of an old XTR that's leaking from the pistons, only to find that Shimano doesn't include the banjo bolt... Do the XTR and ...
3
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2answers
1k 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 ...
1
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1answer
125 views

What's the difference between mechanical and hydraulic brake rotors?

I just bought some replacement brake rotors for my Shimano hydraulic system, the box says they are for mechanical brakes, anybody know if this should effect it??
14
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6answers
37k views

How do I prevent my hydraulic brakes from getting pressed/damaged when the wheels are off?

When I was buying my bike, the technician in the shop told me not to press the brakes when the wheels are off (detached), otherwise the brakes will get damaged (I don't know how). I need to detach ...
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2answers
100 views

Are there downsides to cross-top brake levers? Compatible with all mechanical-hydraulic disc brakes?

I have a Genesis Croix de Fer 20 from a few years ago with the following specs: Brakes: TRP HY-RD mechanical-hydraulic caliper w/160mm TR160 rotors Levers: Shimano Tiagra ST-4700 I would like to fit ...
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3answers
2k views

Can I use Avid olive and connector insert in a Shimano brake?

Basically, this is the question: I can use the olives and connector inserts proper for Avid in a Shimano Deore M596 brake/hose? Has anyone tried and can report if it worked perfectly or if there was ...
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2answers
196 views

How to clean brake pads properly to stop squeal?

I bought a new MTB recently that came with TEKTRO HD-275 hydraulic disk brakes, after two weeks it has started to squeal, then I clean both front and back pads with Isopropyl alcohol and 120 sandpaper,...
2
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3answers
152 views

Hydraulic brake bleed fail - try again or replace?

I bled and completely replaced the fluid on a set of Tektro Orion hydraulic brakes, using Shimano mineral oil. Before bleeding, one worked a little bit, and the other didn't at all. In my impression,...
2
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2answers
165 views

I got a leak on my shimano 105 R7020 STI

My caliper rotor push oil back in the STI. All of the sudden mineral oil started leaking. Do you know SKU of this part?
5
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3answers
22k views

Troubleshooting Hydraulic Disc Brakes

I replaced the fluid in my hydraulic disc brakes as they would not work within the first 10 minutes of cycling and would gradually sharpen up. I suspect they had air in the system. They were sharp ...
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6answers
6k 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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2answers
103 views

Can I change my hub so I can put disc brakes on the bike

So I have this 2007 Janis XC bike and I’m turning it into a trail bike on a budget. I wanted to know if I could change the hub on the wheel instead of buying a new wheel set so I can install some disc ...
2
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5answers
508 views

What are the typical range of maximum braking friction forces?

There are many non-bike applications which benefit from using bicycle hardware. Case in point, there is a long and rich tradition of using bike parts in aviation. One particular area of interest is ...
1
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1answer
270 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 (...
5
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3answers
256 views

What and where is the weeping port on Shimano MTB brake levers?

I understand that when you overfill some models of Shimano hydraulic brakes with oil, the excess will flow out of a one-way valve called weeping port, but cannot find any technical documents, pictures ...
10
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3answers
5k 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 ...
0
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2answers
150 views

MTB to Drop Bar Conversion [duplicate]

I currently have a cheap begginer’s MTB. A Toseek Brandon 27.5er 1x8 with hydraulic disc brakes and I came across a circular drop bar handlebar close to my original flatbar diameter. Is there a ...
6
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2answers
2k views

Is there a distinct look for contaminated disc brake pads?

I have sintered pads and I'm trying as best as I can to diagnose a braking issue. I have Shimano XT M8000 callipers and the rear brake is being something of a pain. If I leave the bike for about 4 ...
4
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3answers
164 views

disc brakes start squealing after just a bit of use

The rear disc brake on the Jitsie Varial 24" Hybrid that I recently got (for Christmas, so about two weeks ago) started squealing and losing its power. This was also a problem on the hardtail mtb ...
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5answers
89k views

How often should hydraulic disk brakes need bleeding?

The brake handles for my disk brakes became very loose four months after I bought the bike. The bike shop bled the brakes and put new oil in them, which sorted it. They're feeling a bit loose again (...
1
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1answer
156 views

Creaky hydraulic disc brakes on MTB

I am having some trouble with my Boardman Mht 8.8. Whenever I press my brakes while stationary, and move the bike with them engaged, a creak and clunk sounding noise appears, every time. This ...
4
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1answer
330 views

Why do my disc brake calipers fall out of alignment?

Every so often the Shimano 105 7020 hydraulic disc brakes on my road bike start to make a metallic grinding noise and I can feel additional resistance when riding. The culprit has always been ...
12
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4answers
2k views

What is this stamped metal piece that fell out of a new hydraulic shifter?

I’m finishing setting up a new bike, and right as I finished bleeding and shifting around the left shifter (r7025), this little stamped steel bit fell out. It’s about 11mm in diameter and 0.5mm thick....
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2answers
61 views

How to make my Avid Elixir 1 hydraulic brakes more firm? [duplicate]

I have a Specialized Carve Comp 2013, and the front brake is very squishy. The brake system is Avid Elixir 1 hydraulic disc brakes. I wanted to inquire if I need to buy a specific kit to firm up the ...
4
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1answer
296 views

Magura rim caliper and Shimano hydraulic road lever compatibility

I have a trekking bike with a slightly short reach for me. On the other hand I wish to get a drop bar bicycle. I could check on this bike that the position is good with drop bars. On this bike I have ...
2
votes
1answer
273 views

Rear brake doesn’t grip/slips through and doesn’t stop the bike sharp or at all

I cleaned my bike about a month ago and since then I tried to fix both of my brakes. I have hydraulic disk brakes (Tektro Auriga). After I replaced my pads, I was bedding them for over three days of ...
2
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2answers
4k views

Leaking lever - Shimano brakes M365

i recently took my bike to the LBS for brake service. Everything was fine until i noticed that the right lever (back brake) was leaking. Every time i press the lever, it sort of "burps" a bit of oil ...
2
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1answer
106 views

Formula T1S disc brake rub

I have Formula T1S disc brakes (2014 or 2013 model). One day when it was quite hot (in the 30s), but otherwise on a very mild ride on bike paths with kids, the brake started rubbing constantly by ...
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2answers
106 views

How to fix contaminated brake pads? [duplicate]

I recently spilled some brake oil on my brake pads and now they barely work, and they squeak (which I believe is normal for contaminated pads.)
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4answers
139 views

Tektro HD-R210 bleed port adapter identification

I have a generic brake bleed kit and I'd like to use it on my Tektro HD-R210. I'm pretty sure the brakes are just an OEM version of the Tektro HD-R310 - when I asked Tektro for support with the HD-...
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3answers
150 views

Big vibration with Tektro Auriga brakes

About a year ago I swapped the v-brakes with a Tektro Auriga kit. I immediately made a mistake by not properly bedding in rotors and pads, doing "powerful" brakes, sudden stopping of the ...
8
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1answer
13k views

How to install pre bled brakes with internally routed frame

I have a 2017 Salsa Mukluk with an internally routed rear brake. I bought Shimano XT hydraulic brakes to replace the low end mechanicals that came on the bike. My problem is that the brakes came pre-...
0
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3answers
7k 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 ...
4
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1answer
137 views

Is it ok to store a bike with the (hydraulic) brakes locked (i.e. pressurized)?

It's really windy today, and the rain tarpaulin makes a good sail for the bike I'm storing on my balcony. Short of actually mooring the bike to something, I decided to just fasten the tarp a bit ...
3
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0answers
4k 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 ...
7
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1answer
624 views

Hydraulic brake lever doesn't return after being released, dependent on weather

I have a pair of second-hand Shimano ST-RS685 hydraulic brake levers / shifters. Unbeknownst to me they hadn't been used for a year and had quite a bit of dirt / grit inside, which I've cleaned to a ...
0
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3answers
86 views

Will 180mm rotors fit my Carrera Vengeance Ltd. Edition bike?

So I would like to get Clarks M3 hydraulic disc brake set but the only size available is 180mm but i am not sure what to measure to see if this will fit my carrera vengeance ltd edition 16 inch frame ...
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1answer
1k views

SRAM Drop bar to MTB hydraulic brake interoperability

In a previous question I asked about compatibility of drop bar shifters with mountain bike derailleurs. Now I'm curious about drop bar hydraulic brake lever compatibility to mountain bike hydraulic ...
2
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3answers
2k views

Hydraulic disc brake - lever compatibility

I purchased a gravel bike with drop handlebars, mostly for commuting and maybe for some weekend bike camping trips. I've only ever ridden mountain bikes with flat bars in the past, but I figured I'd ...
1
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1answer
151 views

Shimano Di2 Bleed Screw problem

My bleed screw has become damaged and I need a new one. My shifter is Shimano R8070 which according to the spec, the part number should be Y00898030, the screw turned up but it is too small, as in the ...
0
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1answer
128 views

Tektro HD-M290, change to a dropbar lever configuration. Which levers are compatible?

I want to change my cowboy flat handlebar to a drop bar. I have Tektro HD-M290 brakes and I'm searching for a compatible model of drop bar levers. The bicycle has automatic speeds, so I just need ...
2
votes
3answers
2k views

Convert road bike mechanical disc brakes to hydraulic

Im relatively new to road bikes, i was a mtb user my whole life. So i wanted to ask if its possible to change my road bike mechanical disc brake to hydraulic disc brake. I currently have the sora ...
7
votes
1answer
176 views

Using non-brand oil for cleaning brake pistons

I am having some problems with rubbing disc brakes and came to the conclusion that it might be because of "sticky pistons". I would like to clean and lubricate them, as here. This video ...
4
votes
3answers
590 views

Is my front brake installed correctly?

I bought and installed Shimano MT200 brakes to my bike and now I'm wondering are they installed correctly. Seems like only small area of pad is touching the rotor. 160 mm rotor in the front. I had ...
3
votes
2answers
371 views

Installing shimano mt 200 hydraulic brakes to internally routed frame?

I have a bike with an internally routed rear brake. I bought Shimano mt200 hydraulic brakes to replace the low end mechanicals that came on the bike. My problem is that the brakes came pre-bled. Now I ...

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