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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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1answer
70 views

Brake lever suddenly lost its extra movement (extremely stiff). before the pads contact the Disk

a month back i had a crash where the brake lever got a clump of sand on it, so i washed it out with water and didn't have any problems, then one random day when i took my bike out for a ride i noticed ...
11
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1answer
141 views

Ultegra ST-R8020 Lever: crack near brake hose interface

I have a bike with a left ST-R8020 hydraulic disc Ultegra lever, and I just noticed a large radial crack on a what seems to be part of the brake connection path (see picture). The crack seems to ...
3
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1answer
72 views

Do I need to keep hydraulic master cylinder right way up?

I want to swap the handlebars for a different pair. I have hydraulic brakes. When i remove the master cylinders from the old handlebars is it necessary to keep them upright, or keep them above the ...
3
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1answer
53 views

Hydro brake piston fluid volume Shimano vs. Campy vs. TRP

I am trying to mount some Hope calipers to some custom brake levers. Hope say the calipers - RX4+ - can be used safely with Shimano and Campy levers in their mineral oil form. I want to know if the ...
1
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1answer
50 views

Brake (Formula T1S) extremely sticky for no reason

The video shows Formula T1S rear brake was last maintained/bled 6 months ago, on a 2015 mountain bike which I rode last 1 month ago: the brake functioned normally then (OK, it had a very slight rub). ...
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2answers
201 views

Disc Brakes Explained

I have recently have purchased my first ever bike with disc brakes, I wanted to know the basics, the dos and don'ts, and to understand stuff I hear like contaminating disc brakes, what does this, how ...
2
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1answer
88 views

My Hydraulic Brakes Always Need To Be Pumped/Burped Before Braking Sharply

So my mechanic and I bled my brakes after it always needing to be pumped before it brakes, brake fluid came out black and seemed to have metal shavings at the bottom. The only problem now is weirdly ...
7
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5answers
2k views

Brake disc sometimes touching brake pad when not braking

I have a Whistle B-Race 7.1 e-bike that's about 3 months old. Recently the front disc brake has started touching the brake pads when not braking, when it does you can hear a "zing" sound. It ...
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0answers
61 views

Initial resistance / detent feeling in hydraulic brake

My brake has a up-front amount of pressure it needs before it will then engage. It feels like I'm actuating a clicky button and not a continuously moving brake. What could be causing this?
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2answers
98 views

Is it normal for a rotor to move when brakes applied (hydraulic)?

I noticed a movement of braking disc when pressing rear brake and watching on rotor. It was moving about half millimeter. Is it normal for rotor to move minimally?
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1answer
41 views

Front disc brake caliper fixing bolts size

Can anyone please tell me the bolt size required to attach a flat mount hydraulic disc brake (SRAM replacement) to a set of Boardman carbon forks please.
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1answer
110 views

Best way to use Shimano 105 on an older frame

I have a cyclocross bike built on Shimano 105 (~2018), but the frame was too big for me, so I decided to buy a smaller one on the aftermarket and just move all my existing stuff to this frame. I found ...
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4answers
706 views

Heating of hydraulic oil with hardtail electric MTB brakes

I do an ebike commute here in NZ with a steep downhill at the end of the ride at night and a longish downhill in the morning.Brakes are Shimano Hydraulic MT200, 180mm Rotors and pads were Shimano ...
3
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1answer
131 views

Why is my hydraulic front disc brake clicking?

I noticed that there's a mysterious click that seems to be tied to wheel rotation when riding my bike. It is barely audible when there's no traffic nearby. I initially assumed that it's a hub or the ...
7
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2answers
155 views

Are clear hydraulic brake lines available for sale?

Since all brake lines are not see through, the only way to determine if your brake needs a bleed is by feeling the brakes. If they are "squishy", then you need a brake bleed. I'm of the ...
0
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1answer
83 views

Hydraulic disc brakes transportation

I'm planning on packing my bike for transportation with both wheels off. I have SRAM Apex disc brakes on the bike. What are the risks if ever the brake leavers get squeezed during transportation ?
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1answer
87 views

How to reduce brake lever rattling sound at the pivot pin either by a fix or by replacement?

Context I have a Merida Speeder 200 with a Shimano MT-200 hydraulic brake system, which uses BL-MT200 levers. Over time these levers have developed a rattling sound. It appears to come from the lever ...
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2answers
167 views

Another flatbar to dropbar conversion noob

I am thinking of changing my Boardman HYB to a drop bar setup. Trying to avoid having to change the entire group set if I being honest as I am on a tight budget. Currently, its Shimano Acera 2x9 and ...
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2answers
371 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 ...
4
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2answers
229 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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1answer
447 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, ...
6
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2answers
351 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 ...
1
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1answer
139 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??
2
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2answers
106 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 ...
1
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2answers
243 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 ...
2
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3answers
382 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,...
3
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3answers
1k 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? (click for larger views)
2
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2answers
649 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,...
0
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2answers
244 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 ...
4
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3answers
212 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 ...
4
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1answer
981 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
152 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
787 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
304 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 ...
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2answers
145 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
votes
1answer
141 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 ...
0
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2answers
171 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.)
-1
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3answers
216 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 ...
1
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4answers
361 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-...
4
votes
1answer
145 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 ...
0
votes
3answers
175 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 ...
2
votes
5answers
886 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
vote
1answer
291 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
votes
1answer
253 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
6k 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
221 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
621 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
538 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 ...
3
votes
1answer
93 views

Disc brakes installation

I have got IronHorse Maverick 3.2 bikes with v brakes and I want to upgrade to disc brakes. The fork and frame both has Is mount so they should be able to get calipers on them with the right mount ...

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