All Questions
16
questions
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
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
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
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
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