All Questions
Tagged with brakes hydraulic-disc-brake
132
questions
4
votes
3
answers
808
views
Replacing hydraulic brake lever
This is my first time dealing with hydraulic brakes.
The front brake on my bike is Shimano BL-M4100 lever with MT410 caliper. I stripped the lever's clamp thread and going to replace the lever with a ...
- 143
2
votes
2
answers
265
views
Shimano BR-MT400 caliper upgrade?
After 2 years calipers no longer retract fully (pistons) causing annoying rubbing sound.
What options do I have to upgrade it (perhaps something more durable) providing I still want to reuse the same ...
- 65
0
votes
1
answer
361
views
Tektro HD-M275 rear brake making grinding noises while braking
I got Tektro HD-M275 hydraulic disc brakes with 180mm rotors, front brake is working perfectly with no issues. Under light braking rear brake works normally without any noises or vibrations, but as ...
6
votes
3
answers
513
views
What are the failure modes of the brake rotor worn beyond limit
Background
I have been maintaining two bikes for a few years. Both have disk brakes. One has around 10 000 km on it another one is well over 35 000 km. The disks on the bike with 35k+ are now reaching ...
- 2,837
3
votes
6
answers
974
views
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'...
- 33
1
vote
2
answers
485
views
What to considering when replacing disc brake calipers?
I currently have an endurance road bike equipped with Shimano 105 hydraulic disc brake calipers. Since I am transforming it into a gravel bike, I would like to change the calipers to the Shimano GRX ...
- 292
0
votes
2
answers
484
views
Mountain bike brake pistons not compressing when brake is pulled
I have a Shimano BR-MT201 Hydraulic Disc Brake on my rear brake. I was replacing the brake pads and accidentally pressed the brake too many times and the piston popped out leaking brake fluid. ...
0
votes
1
answer
597
views
What are the exact dimensions of Shimano disc brake split (cotter) pins?
What are the exact dimensions of Shimano disc brake split (cotter) pins, such as part nr. 25 (Y8DB06100) on BR-MT410 caliper (https://si.shimano.com/en/ev/BR-MT410-4663)?
Looking to buy generic ...
- 405
1
vote
1
answer
524
views
Scratched hydraulic brake hose during install - should I be concerned?
today I was installing brand new GRX brakes into new frame. It was not my first time, I've already build 10+ bikes, I messed up through. I inserted rear brake hose without any issues, I had my guide, ...
- 31
8
votes
2
answers
703
views
Is degassing DOT brake fluid before a bleed still a thing?
I recently bled old AVID Juicy 3 hydraulic brakes and followed the procedure described in this AVID Bleed Procedure video (starts at the relevant section). While preparing the syringes, the technician ...
- 4,159
-1
votes
1
answer
97
views
Mechanical bike disc brake caliper lever
Where can I find a data sheet for this part? I want to know if there is a magnification factor between the force which acts on the disc brake by pads, and the force that I pull the wire with, as I ...
2
votes
1
answer
745
views
How do I replace one oil with another in a Shimano brake system?
Having seen this question about correcting the "wandering bite point" problem common with Shimano brake systems, I intend to replace the standard Shimano mineral oil in my brakes with the ...
- 4,021
9
votes
7
answers
1k
views
On road repair for hydraulic brakes
What are the possible on-road modes of failure for hydraulic bicycle braking systems, and what can a touring cyclist do to be prepared for their eventuality? What can one carry as an emergency backup ...
- 2,696
2
votes
1
answer
127
views
Oil stopper of Shimano oil funnel: what's its sharp end for?
Shimano instructs to insert the sharp end of the "oil stopper" to bleed the brakes:
What is this for? I would expect that the oil should just flow from/to the funnel when pumped into the ...
- 1,635
3
votes
2
answers
122
views
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 ...
- 181