Have I damaged my brakes - Bike Forum https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/ Singletrack World Magazine Forum. Come for the bikes, stay for the boll**ks en-GB Sat, 04 Apr 2026 20:32:49 +0000 wpForo 60 Re: Have I damaged my brakes https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213739 Tue, 23 Nov 2010 18:40:54 +0000 they are ground, to make sure they are flat.

]]> Bike Forum mkultr4 https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213739 Re: Have I damaged my brakes https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213738 Tue, 23 Nov 2010 18:37:04 +0000 Not with an angle grinder

Most are cut from flat

]]> Bike Forum TandemJeremy https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213738 Re: Have I damaged my brakes https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213737 Tue, 23 Nov 2010 18:34:19 +0000 its not rocket science. I done this hundreds of times cars,bikes.some of those raced on tracks you just be careful and use a micrometer and straight edge. how do you think rotors are made

]]> Bike Forum mkultr4 https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213737 Re: Have I damaged my brakes https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213736 Tue, 23 Nov 2010 18:27:45 +0000 Using an angle grinder on a disc is wrong. You will make the disc thinner thus weeker ( you do know there is a minimum thickness for a disc?), controlling how much material you remove will be difficult meaning you could end up with brake judder.

its a stupid thing to do.

The grooves in the disc will simply mean it takes longer to bed pads in and will have no detriment once they are bedded in

]]> Bike Forum TandemJeremy https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213736 Re: Have I damaged my brakes https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213735 Tue, 23 Nov 2010 18:23:31 +0000 Get angle grinder with abrasive disc and sand them out.

eh terrible advice.

if it scratched a bit leave it. if its deep groves replace it.

Nothing wrong with using an angle grinder if you know what your doing. Grooves will have no detriment to braking at all they will just wreck your new pads you've just put in.
@ziggy yeah you could sand your rotor holes out and fill the one in between your nose and chin.

]]> Bike Forum mkultr4 https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213735 Re: Have I damaged my brakes https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213734 Mon, 22 Nov 2010 19:35:31 +0000 Is now the time to tell you the easy why of aligning the caliper?

Just loosen the caliper bolts, then hold the brake on and do the bolts up whilst still holding on the brake.
Usually results in a perfectly aligned caliper.

Sorry for not telling you that 2 hours ago :-)

]]> Bike Forum ziggy https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213734 Re: Have I damaged my brakes https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213733 Mon, 22 Nov 2010 19:16:09 +0000 Yes, the disc may be ever-so slightly bent and causing it to rub just a tiny bit. It really doesn't matter.

I hate getting brakes right but when they are it makes soooo much difference to my confidence, it's worth it.

Rachel

]]> Bike Forum allthegear https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213733 Re: Have I damaged my brakes https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213732 Mon, 22 Nov 2010 18:54:27 +0000 Blimey that took an age to get lined up. It rubs a bit in one place as you spin the wheel is that ok? Done the front as well as they were looking low. Did what Yoshimi said about pushing the pads in and it worked a treat.

Yey me!

]]> Bike Forum emsz https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213732 Re: Have I damaged my brakes https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213731 Mon, 22 Nov 2010 16:51:07 +0000 just align caliper as Yoshimi says it will be fine - you may ahave a stuck calipe rif only one side wore out. that is a right pain to fix.

]]> Bike Forum Junkyard https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213731 Re: Have I damaged my brakes https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213730 Mon, 22 Nov 2010 16:48:27 +0000 Sounds normal to me! Pump the brake a couple times for the pistons to reset be cautious the first couple of times you use the brake as they'll need to bed in... for me normally one long drag and they're back to normal!

]]> Bike Forum xc-steve https://singletrackworld.com/forum/bike-forum/have-i-damaged-my-brakes/#post-2213730