All Questions
27
questions
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
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
978
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 ...
- 2,837
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 ...
- 20k
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
657
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
70k
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