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My floating rotors on the front wheel of my Norge really do float. If you grab them and try to move them around, they do. There's maybe a millimeter or 2 of movement. In fact they're so loose that when I back my bike out of the garage with the engine off I hear them rattle as the wheel turns. I assumed this is normal and desirable. However at the last Guzzi rally I attended, I tried moving the floating rotors on maybe 10 different bikes, and all of them wouldn't move at all. I know there are ways to "fix" this (spin the buttons with a bolt, nut and drill while spraying them with brake cleaner). I'm curious if I'm thinking about this incorrectly. Do your floating rotors really float? If not, do you care? Have you tried to "fix" them?
Many times a pulse in the front brakes is caused by stuck rotor buttons. An easy fix is to chuck a proper sized screw extractor( easy out) in a drill , stick it in the button hole and give them a spin . Drill in reverse of course, and spray with some solvent cleaner. It doesn't take too long for them to get gummed up and stop floating as they should. Works a treat
My Guzzi's discs are fixed, no float as they're from the 1970's but both my Ducatis have full-floating and both have suffered from wear.On the Monster that has steel carriers/alloy buttons, the buttons wore out to the point that there really was excessive movement whereas on the 916 which has alloy carriers/buttons, the carriers wore whilst the buttons were fine and the actual disc itself was still perfect.I like the full floaters but you need to keep on top of the wear.
Something else to check is the brake pads themselves. Some have external anti- rattle springs and others have them built into the pads. At low speeds they'll sound terrible if they are worn. Semi floaters shouldn't rattle. Paul B
No, it's obvious that the rotors are rattling. If you grab them and move them up and down, they move a lot. I'm afraid the buttons are going to pull out of the aluminum ring when breaking hard.
Are you the original owner?John Henry
No. Why do you ask?
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