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Thread: Front Brake Rotors |
magzx12r
Expert Class
Posts: 252
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posted April 21, 2002 11:06 AM
Front Brake Rotors
I think my front brake rotors are warped because I am getting a vibration from the front when braking. It is not the tire because I just replaced my cupped front tire. I have been running the EBC HH's for a while, but the vibration just started recently. I am thinking about the EBC Pro-Lite rotors. Where can I get these for the ZX-12R at a good price? Do any of you have suggestions for other front brake rotors?
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Mark
'03 ZX-12R
'12 1199S
  
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kawachan
Pro
Posts: 1031
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posted April 21, 2002 11:35 AM
Put your bike on stands and spin the front tire. It might help to hold an object real close to see if it contacts the rotor at any particular spot. Better than just buying a rotor for trial and error. Also, make sure you have the front wheel installed correctly since you just replaced your front tire. Check pad installation, too.
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RED NINJAS RULE!!
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magzx12r
Expert Class
Posts: 252
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posted April 21, 2002 11:53 AM
My front wheel had some drag before I switched tires. I put the front on a stand yesterday and the wheel drags all the way around, but drags hard in one spot. I cleaned the rotors with some brake cleaner and it decreased the drag, but it still drags kind of hard in that one spot. I am going to get some dial indicators and see where the warpage is. I will try to loosen the rotor bolts and retighten them to see if I can straighten out the rotor. If nothing works, I will replace the rotors, but don't want to go back with stock.
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Mark
'03 ZX-12R
'12 1199S
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zx11_12
Expert Class
Posts: 207
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posted April 21, 2002 06:39 PM
Check your calipers while you are at it. I had a very similar problem on my old ZX-11. I bought factory rotors only to have one warp again almost immediately. Then I bought EBC Pro-lite rotors (cheaper than original and better stopping power too). While I had the calipers off this time, I checked them out and found that the left one had a piston sticking causing it to drag and warp the rotors from the heat generated. I bought new o-rings and rebuilt the calipers myself. No more trouble. It's cheap insurance when you consider the cost of new rotors.
Steve
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"There is only one basic human right, the right to do as you damn well please. And with it comes the only basic human duty, the duty to take the consequences."
PJ O'Rourke
 
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frEEk
Administrator
ummm... yeah
Posts: 9395
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posted April 21, 2002 07:10 PM
i'm actually noticing the same thing while riding today. rather disconcerting... i was thinking warped rotors too, but really dont have enough experience or knowledge to make anything but a guess. i hope its not warped rotors, cause i dont really wanna pay for new ones.
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kawachan
Pro
Posts: 1031
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posted April 21, 2002 07:36 PM
I remember some of the guys talking about getting the front wheel spacers aligned properly. Maybe you can check that too.... Rotors are high!
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RED NINJAS RULE!!
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ZXtra
Expert Class
Posts: 490
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posted April 21, 2002 10:28 PM
After any front wheel work always go for a short (3 minute) ride (without using the brakes hard), stop, then feel each front rotor to see if there is any undue heat build up in either rotor. This will tell you if the front forks are spaced correctly. Too much heat can warp a rotor and cost you some speed.  -ZXtra
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The sixth sick sheik's sixth sheep's sick!
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12RPilot
Pro
Posts: 1094
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posted April 22, 2002 05:38 AM
My buddy checked his brakes that way. Went for a short two block ride, felt the rotors amd burnt the living piss out of his fingers. Yep, the pads were dragging.
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If you aren't an AMA member, you're part of the problem.
NESBA #209
http://www.bikepics.com/members/12rpilot/04zx10r/
 
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horsepower
Parking Attendant
Posts: 22
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posted April 22, 2002 06:04 AM
 Edited By: fish_antlers on 22 Apr 2002 08:36
Magzx12r: Mike here from Horsepower Unlimited. I sell a lot of the EBC rotors. You have several options. You can reach me at xxxxxxx. Mike.
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swft
Member
Full throttle!
Posts: One MEEEEEELLION
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posted April 22, 2002 08:22 AM
Mike, can you get the GFA188HH pads? These are the kit racing pads.
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fish_antlers
Administrator
The Truth is Out There
Posts: 20286
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posted April 22, 2002 08:36 AM
Hey Mike.. .how bout buying some ad space from us?
I suggest people here try calling SpencerCycle (see banner ad) as they sell that stuff as well, and SUPPORT this site.
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magzx12r
Expert Class
Posts: 252
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posted April 22, 2002 09:33 AM
Spencer Cycle does not sell these rotors.
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Mark
'03 ZX-12R
'12 1199S
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Eric00zx12r
Novice Class
Posts: 97
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posted April 22, 2002 01:31 PM
If the bike is still under warranty...take it to the stealer and have them call Kawasaki and get you a new rotor under warranty.
Mine would shimmy if I braked hard from anything above about 40 mph. Below 40 mph, I didn't really notice it.
I'd been fighting with my stealer for about a year trying to get them to check the front rotors. Each time they told me it was fine. I bought a dial indicator and checked them myself. The left rotor had about .030 warpage to it. I took it back to dealer and told them about it. Then they checked it (what I had been asking them to do since day one) and they said "Yep, it's warped". They called Kawasaki and Kawasaki said to replace it. New rotor and it brakes like a new bike  !!!
I know it's a pain, but at almost $300 for one rotor, it's worth checking into.
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Eric
00ZX-12R
Candy Persimmon Red
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magzx12r
Expert Class
Posts: 252
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posted April 22, 2002 02:05 PM
Thanks for the tip Eric. My bike has the extended warranty, but I didn't think about the rotors being covered. I will check with the dealer to see what's up.
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Mark
'03 ZX-12R
'12 1199S
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magzx12r
Expert Class
Posts: 252
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posted April 23, 2002 12:40 PM
I talked to the dealer and to Kawasaki today, and no luck with replacing the rotors under warranty. So I will buy some aftermarket rotors. Any one have experience with the Wave Rotors? I am also looking at the EBC Pro-Lite Race rotors.
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Mark
'03 ZX-12R
'12 1199S
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redelk
Moderator
Please... speak to the hand.
Posts: 3207
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posted April 23, 2002 03:06 PM
rotor warp testing
Though my lengthy rotor report didn't make the transfer over to the new site, I do have a "condensed version" with pics of how I attached a AutoZone dial indicator to my fork leg. If your interested, e-mail me at adcraft@cei.net
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There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.
-Ernest Hemingway
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KawRider
Expert Class
Posts: 329
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posted April 24, 2002 02:36 AM
Rotors/Advertising
Make sure you cut Horsepower a good deal if he does advert here... he is a REALLY SMALL (1 person) buisiness. He is the best!
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Tim
Black ZX-14
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