floating rear rotor?
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Good luck in your quest to only hear what you want to hear.
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From: Near Yosemite
Since we're talking about this, I wonder, and have in the past, about the function of the rubber insert/plug, #5, that is installed onto the bracket, #9, in the diagram and whether or not it allows MINIMAL movement at the point where the bracket mounts onto the weldment piece of the swingarm. I know the part of the bracket that has the axle running through it is stationary and keeps any lateral movement, left/right, from happening when the axle nut is torqued down, but is that rubber piece there to allow slight rotational movement? Just curious as to its function. Does it qualify it as a "Floating Caliper"?
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From: Las Vegas
Since we're talking about this, I wonder, and have in the past, about the function of the rubber insert/plug, #5, that is installed onto the bracket, #9, in the diagram and whether or not it allows MINIMAL movement at the point where the bracket mounts onto the weldment piece of the swingarm. I know the part of the bracket that has the axle running through it is stationary and keeps any lateral movement, left/right, from happening when the axle nut is torqued down, but is that rubber piece there to allow slight rotational movement? Just curious as to its function. Does it qualify it as a "Floating Caliper"?
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From: Near Yosemite
Maybe. Good possibility........... But it could only rattle if there was some sort of movement, I would think?
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Club Member
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From: SWFL
The rear of the bracket is clamped against the ABS Sensor/spacer and then the inner bearing race when the axle is torqued down. No movement there.
So I see no floating functionality on the rear caliper, unless I'm missing something. Which is odd since I thought you wanted ONE of the two components to float - Rotor or caliper. I guess not needed on the rear wheel?
Since we're talking about this, I wonder, and have in the past, about the function of the rubber insert/plug, #5, that is installed onto the bracket, #9, in the diagram and whether or not it allows MINIMAL movement at the point where the bracket mounts onto the weldment piece of the swingarm. I know the part of the bracket that has the axle running through it is stationary and keeps any lateral movement, left/right, from happening when the axle nut is torqued down, but is that rubber piece there to allow slight rotational movement? Just curious as to its function. Does it qualify it as a "Floating Caliper"?
I thought "floating" means the caliper can move laterally, not radially. So I still don't see that anywhere on the rear brake.
Last edited by Mchad; Dec 15, 2023 at 12:24 PM.
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From: Michigan 15 Minutes East Of Hell
Pretty sure the rear caliper is a 4 piston caliper ( pistons move on both inboard and outboard ) therefore providing egual pressure to both the inboard and outboard brake pads when the system is energized hence the need for no movement by the caliper
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From: Near Yosemite
I just looked at mine. The caliper hard mounts to the bracket. 2 bolts, metal to metal. No float there. The caliper while a different PN then the fronts which hard mount to the slider, doesn't appear to be any different functionally then the fronts. i.e. no internal "floating" mechanism. The rear side of the caliper bracket has a ring which slips over the axle, and a u channel on the front which slides over a rail cast into the swingarm. I guess that's to allow for forward to rear movement when adjusting the belt tension. That rubber biscuit prevents rattle as you say I expect.
The rear of the bracket is clamped against the ABS Sensor/spacer and then the inner bearing race when the axle is torqued down. No movement there.
So I see no floating functionality on the rear caliper, unless I'm missing something. Which is odd since I thought you wanted ONE of the two components to float - Rotor or caliper. I guess not needed on the rear wheel?
Sorry I missed this when I basically repeated everything you just said!
I thought "floating" means the caliper can move laterally, not radially. So I still don't see that anywhere on the rear brake.
The rear of the bracket is clamped against the ABS Sensor/spacer and then the inner bearing race when the axle is torqued down. No movement there.
So I see no floating functionality on the rear caliper, unless I'm missing something. Which is odd since I thought you wanted ONE of the two components to float - Rotor or caliper. I guess not needed on the rear wheel?
Sorry I missed this when I basically repeated everything you just said!
I thought "floating" means the caliper can move laterally, not radially. So I still don't see that anywhere on the rear brake.
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Club Member
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From: SWFL
Right, but so are the fronts. They why use floating rotors on one end and not the other. This doesn't matter anymore since I just moved the stock fixed rotor to the new wheel, but just for discussions sake?