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Old 02-08-2009, 07:30 PM   #1
cdill35
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Front Rotor Question

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Old 02-08-2009, 07:48 PM   #2
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Old 02-08-2009, 07:48 PM   #3
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That shouldn't be the problem. If it floats like that technically you are getting better braking power. They are called full floating rotors. You may have a warped rotor. But those rivets being loose shouldn't do it.
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Old 02-08-2009, 07:51 PM   #4
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That shouldn't be the problem. If it floats like that technically you are getting better braking power. They are called full floating rotors. You may have a warped rotor. But those rivets being loose shouldn't do it.

Why is the right side not this way? And it's a "clanking" looseness.
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Old 02-08-2009, 07:57 PM   #5
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Why is the right side not this way? And it's a "clanking" looseness.
I have seen a couple bike like that. probably just a bent rotor and it started to wear unevenly. Not sure. Call Motorcycles Unlimited on Tuesday. How long has April's bike been doing it?
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Old 02-08-2009, 08:05 PM   #6
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Possibly close to needing a new rotor. Worn, not broke. But be aware it will get worse the more it is used especailly under hard braking.
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Old 02-08-2009, 08:06 PM   #7
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Brandt, those are called rotor rivets or buttons. There are two styles of rotors one in which the rotors are able to move on those buttons, called floating rotors and the other are fixed, i.e. no movement. The vast majority of stock rotors are fixed. If the rotors are really loose, look at the inside of the buttons. You'll likely find very small cracks in them. When mine got really loose, I replaced my rotors.

That looseness will cause a distinctive clunking sound when the brakes are first applied. However, that won't necessarily cause shaking in the front wheel. The shaking often emanates from warped rotors. That will generate a pulsing or shaking feeling in the front end.
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Old 02-08-2009, 08:19 PM   #8
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Ok, well, if that "floating" rotor is not the problem. Then I dont know. Guess it just needs new rotors.

Magic Man........ it didnt not start doing this until after a lowside. Left side, coincidentally, the side that is "floating"
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Old 02-08-2009, 08:23 PM   #9
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Ok, well, if that "floating" rotor is not the problem. Then I dont know. Guess it just needs new rotors.

Magic Man........ it didnt not start doing this until after a lowside. Left side, coincidentally, the side that is "floating"
A fixed rotor with buttons so worn that it moves a lot IS a problem, that's why I replaced mine. It just doesn't necessarily cause the front end to vibrate. That's likely a bent or warped rotor.
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Old 02-08-2009, 08:26 PM   #10
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Quote:
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A fixed rotor with buttons so worn that it moves a lot IS a problem, that's why I replaced mine. It just doesn't necessarily cause the front end to vibrate. That's likely a bent or warped rotor.
Anyway to tell prior to just buying a new one?
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Old 02-08-2009, 08:30 PM   #11
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Anyway to tell prior to just buying a new one?
I'm assuming you are asking for a way to check for a warped rotor, conclusively. With loose rotor rivets, I don't know how you'd do that. Perhaps Patrick or one of the other really experienced wrenches knows a way.
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Old 02-08-2009, 11:00 PM   #12
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Anyway to tell prior to just buying a new one?
Do you know anyone with a dial indicator? That's the easiest way to check for runout (warpage). Sometimes the warpage is so slight that you really can't even see it with the naked eye. Mine are getting that way. I'm about to order new rotors next week.
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Old 02-08-2009, 11:46 PM   #13
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Brandt,
That type of wear is normal on the Suzuki's.
The carrier wears and allows the button to wobble.
Eventually it can wear enough that the buttons will fall out.
I'd recommend replacing the rotors.
Give me a shout Tuesday, I may have some good used ones.
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Old 02-08-2009, 11:54 PM   #14
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Do you know anyone with a dial indicator? That's the easiest way to check for runout (warpage). Sometimes the warpage is so slight that you really can't even see it with the naked eye. Mine are getting that way. I'm about to order new rotors next week.
I have dial indicators and jigs for mounting. The problem is that the button are worn, so you wouldn't be able to distinguish a bent or warped rotor from play stemming from the loose rotor buttons.
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Old 02-09-2009, 07:19 AM   #15
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Quote:
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Brandt,
That type of wear is normal on the Suzuki's.
The carrier wears and allows the button to wobble.
Eventually it can wear enough that the buttons will fall out.
I'd recommend replacing the rotors.
Give me a shout Tuesday, I may have some good used ones.
I'll definately call.
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Old 02-09-2009, 09:54 AM   #16
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[quote=cdill35;1757504]Noticed a shake when braking on an 02 GSXR 600. I have circled an area on the picture below. The left rotor is loose in all these areas around it. I am pretty sure this is where the shake is coming from. Couple questions...

1. Do you think this is why the bike shakes under braking? I spun the wheel while on the front stand, and the rotor appears true and the wheel is not bent. Pads are fine. Brakes have just been bled.

2. If so, do you need to replace the entire rotor because I can't see nor have any idea how to fix this.

quote]

gsxr 600? what is this? new toy?
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Last edited by bigpat728; 02-09-2009 at 09:59 AM.
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Old 02-09-2009, 10:02 AM   #17
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Nah..friends.
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Old 02-09-2009, 10:14 AM   #18
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Nah..friends.
got cha
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Old 02-09-2009, 10:16 AM   #19
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brandt, I got two spares, if you wanna try them out
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Old 02-09-2009, 10:32 AM   #20
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Scott...ill holler atcha this evening.
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