Floating Rear Rotor?

The advantage to floating rotors is that they can expand and contract more freely with heat cycles, so they resist warping and the associated pulsing that accompanies the warpage.

09 smr510 rear brake problem

ok so today when i got back from my ride, i heard some clanking noise when i was putting the bike away. i found it to be the rear brake rotor. its seems extremely loose? i didn't notice anything out of normal with it, but there is something wrong for sure. i know the brake rotors have a little play but this thing is all over the palce makes noise just moving the bike. any suggestions on what might be wrong?

Dang wish i saw this before i posted a thread on the same thing lol. it still seems odd that it moves around so much! the front rotor is a floating rotor and it doesnt make any noise. i guess i need to get a better look at the rotor to see whats up.

A sure sign you're wheelie'n too much.

no actually i don't wheelie this bike yet it don't trust it yet! and i've never heard of wheeling having anything to do with rotor noise?

It doesn't only the front one

What you describe sounds normal. The 09 SMR comes with a floating rear rotor and they all seem to be loose on the buttons and rattle a bit.

The front rotor on the SMR has wave washers installed as part of the button assembly to take up slack/dampen rattles and vibration. Also theres a dab of glue on each of the retaining c-clips for the same reason.

Normal for a floating rotor to feel loose and jingle around. No worries.