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26 votes
Accepted

6-bolt vs centre-lock: pros and cons?

Centerlock largely exists because since the beginning of modern disc brakes for bikes, Shimano has more or less alone had a weird cautionary take on the physics of rotor bolts theoretically being able ...
Nathan Knutson's user avatar
16 votes
Accepted

I know I am missing a rotor but I don't know what to attach it to

You will need a wheel with a hub that is rotor compatible and fits your bike. There are two main ways to mount a disk brake rotor to the hub. A Shimano centerlock design has splines on the hub to ...
David D's user avatar
  • 21.5k
14 votes

6-bolt vs centre-lock: pros and cons?

Advantages of 6-bolt: Not being patented by Shimano means more vendors offer compatible wheels/disks. Torx bolts require a smaller tool which is often included in many multi-tools so one can always ...
Grigory Rechistov's user avatar
13 votes

Are rotor bolts designed to shear?

Low-profile button-cap socket screws do have a design weakness. The button reduces the amount of material around the head and the recessed hex or Torx socket also does the same, exactly at the ...
RoboKaren's user avatar
  • 29.2k
13 votes

6-bolt vs centre-lock: pros and cons?

A couple more pros of centre lock: Finned rotors One big difference is that you can't get the finned Shimano Ice-Tech rotors used on the road bike groupsets in a 6-bolt configuration. E.g: or I'...
tomRedox's user avatar
  • 291
11 votes

Why does a Shimano centerlock rotor have free play?

The cause is a missing aluminum shim between the centerlock lockring and the brake rotor. I removed the brake rotor from the defective front wheel. Then I removed a brake rotor from a known-good front ...
juhist's user avatar
  • 19k
10 votes

6-bolt vs centre-lock: pros and cons?

One disadvantage of 6 bolt is that you can torque one side just a bit more than the other which can cause the rotor to be just a bit warped. Center-lock torques evenly by design so there’s no risk.
RoboKaren's user avatar
  • 29.2k
9 votes
Accepted

Are disc brake rotors interchangeable between brands?

tldr: be sure new rotor works with metal pads or get a set of resin pads. Generally, disk brake rotors of same diameter are thought of as cross-compatible, but there are some edge cases when this ...
Klaster_1 Нет войне's user avatar
9 votes
Accepted

Is a "universal" rotor compatible with all types of disc pads?

Every brake manufacturer recommends only using their own rotors, so this is another case where the answer depends very much on who you ask. In general, here is where rotor cross-compatibility can go ...
Nathan Knutson's user avatar
9 votes
Accepted

how does rotor heat dissipation correspond to wheel size?

The amount of energy to be dissipated in coming to a stop depends on the total weight, the initial speed and any slope. That's all. Riding conditions and braking technique can change the time over ...
Chris H's user avatar
  • 59.7k
7 votes

Are rotor bolts designed to shear?

Disc brake rotors with the six bolt design are attached with M5 fasteners. To shear off the head of a new M5 bolt requires a considerable torque. The design torque for medium resistance bolt is ...
gschenk's user avatar
  • 9,778
7 votes

How do I know what brake rotors to get for my bike?

TR160-35 is the model number. They are 160mm Centerlock rotors. If your new wheels have Centerlock hubs, then you need either centerlock rotors or adaptors. If the wheels are 6-bolt, then you need 6-...
Jack Frost's user avatar
6 votes

How to upgrade disc brake size

Answering the question: To upgrade to 180mm from 160 you need a Post-Post 180mm adapter and a new disc. The adapters are widely available as 180 is probably the most common sized front disc on MTB's. ...
mattnz's user avatar
  • 50.9k
6 votes
Accepted

Alternative way for truing disc brake rotor after a couple of truing procedures

Your best and safest option is to replace the rotor with a new one. Bend metal enough and it will deform permanently. In addition, rotors do wear away slowly over time. There's a chance yours is ...
Criggie's user avatar
  • 125k
6 votes

Is my front brake installed correctly?

Your brake is certainly not properly set up. Do not ride the bike in this state! The rotor's brake track must run fully between the brake pads. The radial dimension of both match. You rotor may be too ...
gschenk's user avatar
  • 9,778
6 votes

I know I am missing a rotor but I don't know what to attach it to

From what I can see, there is no serrated ring and the hub is not a disc-brake compatible one (for either center lock or 6-bolt rotors). Thus, for disc brakes you'll need a new wheel that mounts one ...
Armand's user avatar
  • 2,835
5 votes

Lever pulsates while braking

Assuming that you've already checked that the rotor is true (and out-of-true rotors are more responsible for rub than pulsation), I would take a micrometer and measure the thickness of the rotor in ...
Stephen Barner's user avatar
5 votes
Accepted

Disc brake rotor compatibility and recommendation

This doesn't answer your question, but your problem before the question. If your brake body is moving about, the problem isn't the existence of the shim (which is used by all brakes when they upsize)...
RoboKaren's user avatar
  • 29.2k
5 votes

Tektro Spyre C — is the rotor riveted to the hub?

Rotors are wear items and therefore must be removable. The Cube website does not specify what rotors are fitted, but I strongly suspect they are Shimano Center-lock which have a steel rotor riveted ...
Argenti Apparatus's user avatar
5 votes
Accepted

Are center lock rotors less likely to rub or resonate while riding than 6-bolt rotors?

Intermittent rub that corresponds to load received by the frame or fork doesn't have anything to do with how stiff the rotor or its connection to the hub is. It's the fork or frame being flexed, not ...
Nathan Knutson's user avatar
5 votes

Why does a Shimano centerlock rotor have free play?

I found a simple solution and it works fine. Cut and place a piece of cookie wrap plastic packaging around the hub spline (0.05mm thick would be ideal) and insert the disc. it will require some ...
Suyorki Man's user avatar
4 votes
Accepted

How to store old hydraulic disc brakes?

Because you are buying new brakes - the best thing to do would be to store your old brakes in the same manner you receive the new brakes. And that would also be re-using the existing packaging. I'm ...
OraNob's user avatar
  • 3,073
4 votes
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Upgrading to new hydraulic brakes - should I put same sized rotors on front and rear wheel?

Advantages of smaller discs Lighter Less prone to damage Less prone to warping Advantages of larger discs Dissipate more heat More stopping torque The calliper and pad choices are more important ...
mattnz's user avatar
  • 50.9k
4 votes

Upgrading to new hydraulic brakes - should I put same sized rotors on front and rear wheel?

This is a common set up, as the majority of your stopping power is assumed to come from the front wheel, and many frames, especially older frames, had less clearance on the rear triangle of the frame, ...
zenbike's user avatar
  • 29.8k
4 votes

Shimano SM-RT900 Dura Ace Center Lock Rotor on Ultegra

Yes, you can use SM-RT900 rotor with with a BR-R8070 caliper. Calipers rarely have rotor incompatibility (width, size) and almost never across the same manufacturer product range. There are some ...
Klaster_1 Нет войне's user avatar
4 votes
Accepted

Disc brake adapter too close to rotor

It's not the hub's fault unless somehow its axle hardware is put together wrong or it's otherwise not putting the rotor in the right spot, but that would be a weird problem, whereas forks and frames ...
Nathan Knutson's user avatar
4 votes

6-bolt vs centre-lock: pros and cons?

If you’ve ever stripped a torx bolt on a 6-bolt, you will have your answer for why people run centerlock. I will add a small disadvantage to centerlock is boost conversion on the rear. MRP sells kits ...
Cole Inman's user avatar
4 votes

How do I know what brake rotors to get for my bike?

There are two rotor interface types, you need to get something that matches hubs on the new wheelset. As you already noted, rotor diameter should be the same. The rotors should not necessarily be the ...
Klaster_1 Нет войне's user avatar
4 votes

How do I know what brake rotors to get for my bike?

In addition some rotors claim not to be suitable for metal pads, but all seem to be suitable for organic pads. This is only an issue if you run metal pads.
Chris H's user avatar
  • 59.7k
4 votes
Accepted

Should my new 203mm adapter go over the existing one? Do they stack?

You bought a post mount adapter but needed an IS. Stacking it should put the caliper in the right place and would likely more or less work, but it's not a good idea given the alternative of getting ...
Nathan Knutson's user avatar

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