All Questions
27
questions
0
votes
1
answer
381
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
535
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 ...
- 2,857
1
vote
0
answers
91
views
Silver greasy coating on disk brakes
Today I came in to the bike mechanic to align my disk brake calipers and they came out with the disk brakes covered in a silver lubricant (they said that this was especially for disk brakes)
They ...
- 11
3
votes
1
answer
136
views
Rotor VS Caliper VS Pad compatibility
It might be a silly question, but it's not clear to me (peabrain here)
I'm using BR-R317 calipers with G03S pads and RT30 rotors. It's my understanding that Shimano calipers and rotors are compatible, ...
4
votes
3
answers
990
views
Warped rotor due to overheating only on "expensive" brakes?
I got a new bike (Scott Egeniues 920) and after a few rides the rear rotor bent/warped due to long downhill riding (I often go down more than 1400m/4200 feet in one go). When the rotor cooled down, it ...
- 171
3
votes
2
answers
6k
views
Very narrow gap between pad and brake rotor
I have just retired my Tektro brakes (13 years of service) and replaced with a pair of cheap Shimano MT200.
I have a problem with extremely narrow gap between the disk and pads. The gap is so narrow ...
- 2,857
1
vote
4
answers
5k
views
Why does a Shimano centerlock rotor have free play?
I have an electric road bike that has SM-RT64 Shimano centerlock
brake rotor in the front. I have noticed that when I press the front
brake and try to rock the bike back and forth, there's some free ...
- 20.1k
0
votes
0
answers
568
views
How can I determine what postmount I need for my fork / rotor for front and back
I am planning to purchase Shimano Saint BL-M820 + BR-M820 hydraulic disc brake set for my Specialized Stumpjumper Comp and I have no idea what post-mount to buy since I changed my fork and I am pretty ...
8
votes
2
answers
3k
views
Is there a standard disc brake mount to disc brake rotor distance?
I'm new to disc brakes and trying to figure out what I need to buy to buy them for a wide fork (135 mm dropout spacing) with IS disc brake mounts and an electric front wheel. I've researched, but I ...
- 189
1
vote
1
answer
658
views
How to chose the correct hydraulic disc brake rotor size for touring bike?
I have ordered a Shimano Deore M6000 disc brake set. What rotor size should I chose for my touring bike?
I am 85 kg and my bike is approximately 15-20 kg.
- 111
1
vote
3
answers
4k
views
How do I know what brake rotors to get for my bike?
In the next month or so I plan on getting the 2019 Trek Crockett 5 as a cyclocross/road bike. I will also be getting some nicer road wheels for the bike so I can swap out the wheels whenever needed. ...
24
votes
8
answers
71k
views
6-bolt vs centre-lock: pros and cons?
I am having a new set of wheels built, and am trying to decide on whether to go with 6-bolt or centre-lock rotor interface.
What are the pros and cons of the two systems?
- 649
3
votes
5
answers
1k
views
Lever pulsates while braking
I installed a new front float rotor, the ones that you can get from AliExpress. I have Deore XT brakes.
While using the front brake the lever moves back and forth while pulling it. I inspected ...
- 31
4
votes
1
answer
2k
views
How should disc brake rotor size scale with wheel size?
I was wondering whether 20" wheels can get away with smaller rotors than 28" wheels, and if there is a correlation, if it is linear. If it was linear, then 140mm discs on a 20" wheel would be ...
- 1,779
6
votes
1
answer
2k
views
What are the reasons for these two very different post mount adapter designs?
I'm looking to adapt my 160mm post mount front fork to accept a 180mm rotor.
As I'm looking between adapters, I find them falling into two very distinct categories, and I'm wondering if there are any ...
- 3,963
3
votes
1
answer
495
views
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 ...
- 187
0
votes
2
answers
1k
views
Bike Hydraulic Brakes constantly pressing against the rotor [duplicate]
I hope you can help me with this issue. My bike has Avid juicy 7 brakes, and lately both the front and the rear brakes are pressing against the rotor, which makes it really hard to ride it (feels like ...
- 1
2
votes
1
answer
318
views
How to store old hydraulic disc brakes?
Since I'm replacing my old Shimano M446 hydraulic disc brakes with new ones, I'm wondering is there a way to properly store disc brakes that are not in use (disassembled from bike frame)? At the ...
- 779
3
votes
1
answer
624
views
Little rear rotor clearance
I have just test fit my wheel on a Litespeed T5gravel that I'm building and I see there is less than 1mm of clearance between the rear rotor and the chain stay. The rotor is currently a 160mm avid ...
- 275
3
votes
2
answers
2k
views
Switching brakes from mechanical to hydraulics. Disk rotor question
Can I use the disk rotor from the current mechanical brake when I switch to hydraulic?
- 31
3
votes
1
answer
233
views
Brake hard on new cycle
I saw someone after buying a new bicycle (a hybrid), pulled the brake as hard as he could for few seconds and dragged the cycle along while braking like that, 1 brake per centimeter.
Why did he do ...
- 133
2
votes
1
answer
108
views
How to increase range of disc brake pistons?
Recently swapped over my disc brake pads, but discovered that the pistons lightly scrape the rotor when not braking, and when I am braking it doesn't make much of a difference and it allows me to pull ...
- 21
0
votes
1
answer
1k
views
Not enough space to adjust the caliper
Today I have noticed that when I push the rear brake lever (hydraulic disc brakes) the rotor is a little bit bending , but it wasn't rubbing the caliper . I came to a conclusion that rotor is not ...
4
votes
3
answers
15k
views
changing disc brake pad material while keeping same rotors
I would like to know what effect changing the material of a set of disc brake pads would have on the rotors if you kept them the same. for example, If I have resin pads and have been using them for ...
- 691
2
votes
2
answers
960
views
Rubbing disc brake caliper
Finally I bought my new hydraulic disc brakes (Shimano M-446) and installed it on my bike . It was a little difficult to adjust the calipers , because the space between the pads is smaller than on my ...
9
votes
2
answers
3k
views
Bicycle disc brake rotors
It is time to change my bike's hydraulic disc brakes . Now I have a Hayes Stroker Ryde system , but I want to order a Shimano M395 instead . The question is that I don't know If I have to order the ...
7
votes
1
answer
6k
views
Can I use a Center Lock hub and disc brake rotor in place of an ISO hub?
I currently have a regular ISO disc brake hub and rotor on my front wheel. I'd like to replace it with a Shimano generator hub, but all Shimano hubs use Center Lock rotors instead of ISO. The Center ...
- 920