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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hydraulic brakes not working very fast
Ok, so I just got new hydraulic brakes, I have not had any like these and they were fitted by professionals and they had replaced the pads as I had contaminated the old ones. After getting these ...
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Brake piston fell out during bleeding - anything to fix?
When bleeding a brake, I did not insert the correct spacer, pushed the lever too eagerly, and the piston fell out (and the oil was on the floor).
Is there anything to fix after this besides just ...
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Which bolt to use when aligning disc brakes?
I am struggling with a rubbing disc rotor on a new bicycle. Which bolts should I use when trying to align the caliper? The ones I marked in red, or the blue ones?
I tried to use the red ones so far, ...
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Steps to remove Ultegra and install SRAM Force disc brakes with internally routed hose
I have a CAAD12 disc with Ultegra, but I prefer SRAM, so I have got some nice new Force levers & calipers that I need to fit. This is my first experience with disc brakes.
The front setup isn't a ...
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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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When does the braking power stop scaling with Rotor Size
It's commonly established that the braking power scales with rotor size, and an optimal braking technique is to provide enough force for the rear wheel just to lift up. However, my question is wouldn'...
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Can hydraulic brake levers get hot when brakes overheat?
If your hydraulic brakes get hot, can this heat ever travel to your brake levers. Can your levers feel hot or is this my imagination?
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Hydraulic disc brakes - total friction as a function of rotor size
I have a hydraulic disc road bike with a 160mm rotor on the front and a 140mm on the rear. The setup is exactly the same front to rear, except for rotor size. I'd like to know the disparity between ...
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How do I tell the size of my braking discs?
Looking to replace my hydraulic disc brakes but intend to use the old discs. How do I tell the size of the discs to ensure I purchase the right brakes?
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how does rotor heat dissipation correspond to wheel size?
My brompton has disc brakes. I believe effective wheel diameter is 419mm (349 rim + 35mm tyre),
compared to 698mm for 700c + 38mm tyre. I have 160mm rotors, which for stopping power would seem to ...
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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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How to remove existing fluid before bleeding disk brake
I've found lots of tutorials on how to bleed the disk brakes. And in all of them there is nothing about removing existing fluid.
I'm quite afraid that when I start to bleed brakes the existing fluid ...
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Why aren't mechanical disk brakes self-adjusting?
Hydraulic disk brakes usually adjust for pad wear via special seals that allow the pad to "creep" closer to the brake disk as they wear down. It seems that such seals could equally well be ...
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Wax or ceramic coat disk brake caliper?
I am currently in the process of building a new road bike and I want to preserve the nice look of my new hydraulic Shimano Ultegra brake calipers. Normally I'd just coat the the area I want to ...
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Upgrading to new hydraulic brakes - should I put same sized rotors on front and rear wheel?
I would like to upgrade brakes on my bike but I have a dilemma / question - currently, on my front wheel there is 180 mm rotor and on back wheel there is 160 mm rotor. Is there any reason why bike ...
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could I mount a different manufacturer brand rotor to use with my brakes?
I've a tektro draco hydraulic brakes on my mtb and I would like to know if it is possible to mount a different brand rotor to use with my brakes?
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Can you add oil to a hydraulic disc brake reservoir without bleeding the brakes?
Is it possible to add oil to the hydraulic disc brake reservoir to increase the stiffness of the lever, without bleeding the brakes?
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Hydraulic Disc Brakes still Spongy after bleeding?
I have Tektro HD-M276 Hydraulic Brakes that were recently spongy (front brake).
After bleeding the system and topping the fluid off, the bite was much firmer, but when I test rode it, the braking ...
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Hayes Sole Disk Brake sudden loss of pressure.
I braked hard today and felt the pressure in my disk brake drop very suddenly.
Since that point the brake has not been working with no action at the calliper and little pressure in the lever but ...
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Why is my brake lever loose on my hydraulic disc brake i took my wheel off and pressed the brake now the brake lever is loose and touches the grips
What i did in order :
cleaned the brake pads
-put them back in
pressed the brake lever
pushed the brake pads inwards
put the front wheel on
Now as a result of this the brake lever is loose
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Did I mess up my front brake pressure?
My Bike:
Ghost - HYBRIDE KATO 3 AL 29
The first problem was that my front brake disc grinded on the brake.
I tried to adjust the brake -> didn't work
Then I replaced the braking pads which also ...
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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 ...
user53999
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New Shimano 105 hydraulic brake loses pressure
I have a brand new bike with about only 25 miles on it. On a ride today the rear brake (Shimano 105 hydraulic) became spongy, letting me max out the lever but giving on about 25% of braking power. I ...
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Shimano SM-RT900 Dura Ace Center Lock Rotor on Ultegra
Is it possible to fit the Dura Ace Rotor (SM-RT900) if you have the Ultegra R8020 hydro disc .
?
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In shop maintenance - Specialized
I have been riding less than 6 months, mainly commuting to and from work. I got a Specialized Crosstrail Sport 2017.
Now, when I bought the bike, they suggested I bring it in every 3 months for ...
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Alternative way for truing disc brake rotor after a couple of truing procedures
2 days ago after the last ride my front rotor (Ashima AiRotor 203mm) twisted again in a small area on it (not hit in obstacle or overheated), I was almost ready to throw another half an hour from my ...
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Can the length of disc brake hose influence braking power?
I recently installed new brakes (Shimano SLX 675), shortened hoses for front/rear brake, done bleeding but even after that rear brake lever feels much softer than front. (I had identical issue with ...
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How to tell what service my MTB front hydraulic brakes need?
The front Shimano SLX (m7120) hydraulic disc brakes on my trail bikes have lost their mojo. It still brakes but less aggressively than a year ago. Possible causes are worn pads and air bubbles in the ...
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Magura brake pad change: friction noise?
After replacing my worn-out Magura brake pads (MT4 brakes, 7P brake pads), I now have a continous light friction noise when the wheel is spinning (front wheel).
The brake disc is brand new as well. ...
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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)
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Replacing a SRAM Force hydraulic caliper with a new one
I'm replacing my SRAM Force hydraulic caliper with a new one, I've drained the old one so there's no fluid in it. When replacing the caliper with a new one how can I put fluid into it? Should I just ...
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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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Disc of front brake rubs under force
I ride a road bike with carbon frame and fork an hydraulic flat mount disc brakes. A fews days ago the front disc was slightly rubbing on the braking pad, so I readjusted the position of the braking ...
user33275
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How to tighten SRAM HRD Rival brake lever?
I have SRAM Rival HRD brake/gear shifters on my cross bike. It's a 1X setup.
The left brake lever (this is the UK where rear brake lever is on the left, so it's the rear brake lever only) has lateral ...
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Not enough clearance on road discs for rotor (rotor rubbing)
I'm building up a 2014 specialized awol frame with fulcrum red power wheels and trp hylex brakes. I'm using the rotors that came included with the trp's. My issue is that there does not seem to be ...
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how do i stop my Formula disk brakes from squealing
I have seen a number of posts about stopping discs from squealing, but mine don't always squeal, when the squealing starts it doesn't stop (as if something has worn off) and it's not worn out pads.
...
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Maintenance of metallic hydraulic disc brake pistons?
I have Tektro Auriga HD-M290 hydraulic disc brakes and they have metal piston. One of the pistons sticks out more than the other and they don't come out much even though I squeeze the brake lever many ...
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Hydraulic sub brake lever as primary lever
I can see answers for this question with cables but cannot find an answer for hydraulic brakes. I am looking for a 31.8mm clamp hydraulic disc brake lever for my fixed gear commuter, and have seen the ...
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Immense difficulties bleeding a shigura setup
I set up a shigura system with BL-M8000 levers, MT5 and MT4 Callipers and Magura hoses and shimano parts on the lever end. But I couldn't get even a decent bleed on them. I tried a couple of ...
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Problem bleeding Shimano XT brakes
I have a problem bleeding Shimano XT brakes:
The oil can come down if I open the system at the bottom, and the oil drips down. But once I connect the syringe, put the little plastic cup screws on the ...
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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 ...
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Reach Adjust on Shimano hydraulic brake levers for MTB flat bar
I am thinking to install Shimano BL-MT200 (or the BL-M315 depending on availability) on my son's bike (my son is 7 years old). The bike currently has short reach brake levers for the current ...
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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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Hydraulic disk brakes vs hydraulic rim brakes
I am considering buying a new bike and have two models in mind. One features hydraulic rim brakes from Magura and the other has hydraulic disk brakes. Despite searching on the Internet and asking bike ...
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Hydraulic disc brakes and road shifters
I want to build a road/cyclocross bike with a Dura Ace 9000 rear derailleur and a matching shifter (Dura Ace 9000), but I really want to have disc brakes as well. My understanding is that a mechanical ...
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Brake bleeding without bleeding block
Is it ok to bleed my brake without a bleeding block and without removing the wheel?
What is the effect on the lever?
Will this result in a less firm lever?
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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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Shimano Alfine lever does not seem to pump oil into the hose even with reservoir full
I am trying to refill a Shimano Alfine BR-S500 disk brake system with oil. I have filled the reservoir with mineral oil...
And am repeatedly squeezing the lever, but it feels like no oil is getting ...
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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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