Looks like it has a center lock, and that feels tight to me but the rotor has some play in it. Do you guys notice any issues? Thanks
Brake rotor wiggles… Is this normal?
byu/campbelldt inbikewrench
by campbelldt
Looks like it has a center lock, and that feels tight to me but the rotor has some play in it. Do you guys notice any issues? Thanks
Brake rotor wiggles… Is this normal?
byu/campbelldt inbikewrench
by campbelldt
10 Comments
Just to add, the front has some play as well, but slightly less than the rear.
Touching them with your fingers like that isn’t normal…or a good idea.
No, it’s not normal, and stop touching it with your fingers.
And unless you have the correct tool to install it, you can’t know if it’s tight enough.
First off, don’t touch the braking surface with your bare fingers. If you do, clean them with 90% or higher isopropyl. Second, no, it is not normal. Get a tool. For external splines, Pedro’s BB/lockring tool is great. Best I’ve used. For internal splines, it’s a cassette tool. Use a good torque wrench. I have and love a Topeak D-Torq DX. Takes care of the whole bike. The only exceptions are a few light/computer mounts and a few grips. 4-80Nm is a huge range.
Another reason center lock rotors are garbage!
I own these, and yes. It’s actually engineered to do that. The play should not exceed 1mm. But it’s normal as long as the movement is at the little bolts where the black part connects the outer portion of the disc. Look at the link below, and you’ll see.
My mechanics and I also were surprised this was normal when it first happened. A brand new disc won’t usually do it yet, but after a few hard braking pulls, it can start.
Page 8: [https://support.campagnolo.com/media/files/035_2362_Technical%20Manual%20-%20Disc_Brake%20-%20Campagnolo_Rev04_05_2022_ENG.pdf](https://support.campagnolo.com/media/files/035_2362_Technical%20Manual%20-%20Disc_Brake%20-%20Campagnolo_Rev04_05_2022_ENG.pdf)
You should tighten the locknuts so that it doesn’t get worse. If they loosen again, you can use a drop of blue loctite 242 or 243 on the locknut threads.
It’s not actually a big problem because the brakes only torque the rotors one direction. So there’s not much risk of it working back and forth and wearing out the splines or loosening up fast. Also, the rotor can’t come off even without the locknut because the caliper is capturing it. But you don’t want the locknut to come loose and jam something up.
You’re missing the spacer! A little bit of wiggle is normal, but this seems a little excessive to me.
Also, fine to touch with your hands as long as they’re clean I.e. not coated in grease or chain lubricant etc.
Centerlock…I’m not a fan
People are telling you not to touch the rotor, but not explaining why….
Your skin has natural oils which may be left on the rotor leading to contaminated pads and brake failure.