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I have the floating rotor on the front of my Fat Boy Lo. The outter ring has play in it, meanin i can move the outter ring clockwise and counter clockwise around the inner ring that actually bolts to the wheel. Is this normal? Im about to make a 250 mile trip and it doesnt seem right.
Last edited by tymoon31; Apr 27, 2018 at 11:47 AM.
On older disks, there will be some radial play on the disk when cold. About 1 to 2 mm either way. There will also be a bit of axial movement (left to right). Hard to say if your disk if OK from a picture.
The radial movement should practically disappear once the disk gets hot after some braking.
If it worries you, I would visit a dealer and have a mechanic check it out. Better safe than sorry.
Riding 250 miles whilst worrying about your front brake is asking for trouble.
On older disks, there will be some radial play on the disk when cold. About 1 to 2 mm either way. There will also be a bit of axial movement (left to right). Hard to say if your disk if OK from a picture.
The radial movement should practically disappear once the disk gets hot after some braking.
If it worries you, I would visit a dealer and have a mechanic check it out. Better safe than sorry.
Riding 250 miles whilst worrying about your front brake is asking for trouble.
I talked to a few people. Apparently a floating disc is supposed to have some play when cold. THe bike has less than 1k miles on it so i just figured it wasn't right. Seems like a dumb design on a bike that doesnt hit the track and uses pretty mild braking. I went to check it again now that the suns up and everything has heated up and it seems to not move as much. It was just a cold morning so im guessing the gaps were bigger between the bobbits and rotor.
Might want to take a hard look at the wear surface before doing another reshoe.. There is only about a 1/32 of an inch wear allowance on the rotors. My experience shows about 30K of city driving will wear them out. Not a lot of wear but that much gets them pretty far off from being parallel. Could be what is making your wobble enough to wear on the float system. Mine are non-floating and at 30K, new OEM take-offs off eBay made braking much smoother. Your floating system could be hiding another issue. Get you a cheap 0-1 outside mike from Harbour freight to check.
Can the outer rotor and float pins just be replaced?
Last edited by Jackie Paper; Apr 27, 2018 at 01:20 PM.
Might want to take a hard look at the wear surface before doing another reshoe.. There is only about a 1/32 of an inch wear allowance on the rotors. My experience shows about 30K of city driving will wear them out. Not a lot of wear but that much gets them pretty far off from being parallel. Could be what is making your wobble enough to wear on the float system. Mine on non-floating and at 30K, new OEM take-offs off eBay made braking much smoother.
Wow, is that an optical illusion on that outer groove? Mine now have 20K and look a whole lot better.
I just checked the rotor, theres no groove at all just marks and my rotors are a little dirty. I have a gravel driveway and so does everyone i associate with so dust could have just scratched it up a little.
Seems like a dumb design on a bike that doesnt hit the track and uses pretty mild braking.
There isn't anything "mild" about slowing or stopping an overweight Harley (and sometimes the riders/passengers). A floating rotor is far superior to fixed rotor.
There isn't anything "mild" about slowing or stopping an overweight Harley (and sometimes the riders/passengers). A floating rotor is far superior to fixed rotor.
I really dont use my brakes that much. On my CBR i used them constantly. Im not saying it doesnt take much to stop them but they arent used near as much as a crotch rocket. There are large gaps between heating the rotors. I understand the need for a floating rotor, just not on this bike.
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Front brake disc issue help
