You are reading a single comment by @user87951 and its replies.
Click here to read the full conversation.
-
The float happens at the buttons - the round pieces joining the spider to the rotor. A floating rotor normally gives the most stopping power. When you grab the brake lever it squeezes the brake pads onto the rotor which has the ability to move and conform to the brake pads giving maximum rotor to pad contact.
Ahh gotcha. Thanks very much!