dcjens
Pro
Wet side of Washington
Posts: 1059
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posted July 19, 2010 06:40 PM
working on my next set of warped rotors
I just replaced my front rotors in january and I feel the wigglies coming on again! I checked my pads and they need replacing. I was going to go with EBC HH. I dont do a buck forty and clamp em on or ride them at all. I find I use front/rear evenly for most stops. they release just fine and aren't hot ever. Any ideas??
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Black 06
  
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oldkawboy
Needs a job
Posts: 2125
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posted July 19, 2010 07:05 PM
If you ever haul the bike it might be the rotors making contact with the wheel chock, the carriers will bend easily.
Dan
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dcjens
Pro
Wet side of Washington
Posts: 1059
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posted July 19, 2010 07:21 PM
nope, never hauled it.. I ride it alot though. 3-4 K this year already.
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Black 06
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smokinZX14
Needs a life
Posts: 10197
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posted July 19, 2010 07:22 PM
quote:
If you ever haul the bike it might be the rotors making contact with the wheel chock, the carriers will bend easily.
Dan
So true .... Jesses bike had both rotors touch the chock and bent both of them ..
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted July 19, 2010 08:00 PM
That's strange. I stop with one rotor from 149 mph over and over, I've never had to replace brakes. Granted this one is ony a year old.
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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kaw now
Expert Class
Posts: 446
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posted July 19, 2010 09:51 PM
My rotors are all discolored and have 10K miles on the second set of pads no warpage. Seem to remember someone saying something about another problem that feels like warped rotors. Have you had them checked for runout to verify warpage? Perhaps sticking caliper? Have the pads worn evenly?
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BobC
Pro
Posts: 1736
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posted July 20, 2010 03:21 AM
Going from high speed to a dead stop with heavy braking can cause the rotors to warp. You end up with a super-hot spot right under the pads while the rest of the rotor cools at a different rate, this is what warps them.
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Candy Thunder Blue 2006 ZZR1400
Stock wheelbase
Max: 205.4 mph in 1.25 miles
2012 ZZR1400 in Golden Blazed Green
Brock CT Full System. etc
Max: 203.1 in 1 mile (so far)
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Quarter Pounder
Pro
with Cheese
Posts: 1069
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posted July 20, 2010 05:02 AM
whens the last time you had tires put on? Were the rotors taken off?
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SWB 2008 ZX-14
9.19 @ 151
5.98 @ 123
1.53 60'
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dcjens
Pro
Wet side of Washington
Posts: 1059
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posted July 20, 2010 05:11 AM
I got new tires and (straight used) rotors in January. No unusually hard braking either. 1 pad was worn more than the others I noticed this last weekend. I haven't checked for runout.
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Black 06
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Hellmutt
Needs a job
Posts: 2013
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posted July 20, 2010 07:33 AM
Check your rotor isolators and make sure none are bent or popped outta place -- I pranged a rotor on a bike i used to have and it bent 2 of the isolators ( rings that mount the rotor disc to rotor hub ) and it never spun true again, even after replacing the isolators
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British flying couch with endtables and an orange thumper
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SteveWFL
Moderator
Posts: 27920
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posted July 21, 2010 10:52 AM
aftermarket rotors will better withstand the heat from extreme braking on sweet EBC "HH" pads.
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2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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SixSixoh6
Zone Head
Posts: 660
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posted July 21, 2010 11:09 AM
quote:
quote:
If you ever haul the bike it might be the rotors making contact with the wheel chock, the carriers will bend easily.
Dan
So true .... Jesses bike had both rotors touch the chock and bent both of them ..
hmm interesting, ive had my rotors contact the wheel chock on many many many occasions..almost everytime i go to the track. and no problems at all.
improper tighenting sequence when they were installed could warp them. i know this can happen with car rotors easily
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2006 ZX-14: Murdered out, in the dirt, extended, sprayed, air shifted, geared--GONE
2009 ZX-14 SE--has two wheels and an engine
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Shane661
Needs a life
Posts: 11494
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posted July 21, 2010 11:15 AM
 Edited By: Shane661 on 21 Jul 2010 19:17
Obviously:
A) The rotors are not warped. or-
B) Something with your setup, riding style, or perception, is causing this problem.
I run a single rotor, and have braked from up to 211 mph wihout issue. My pads are about done, but other than that, no issues. This issue you are having is not a known common problem with the ZX-14.
If you don't check the rotors for runout, don't call them warped. Anyway, that's my .02. 
Shane
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INTIMIDA2OR
Needs a life
RED rider!
Posts: 13081
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posted July 21, 2010 11:35 AM
quote:
I got new tires and (straight used) rotors in January. No unusually hard braking either. 1 pad was worn more than the others I noticed this last weekend. I haven't checked for runout.
Check the runout on the rotor that had the pad worn more than the others. That one likely has an issue.
I lived with my warped rotors My Red 14 had that happened around 20,000 miles. I straightened them out a few times and they were ok but never perfect.
Around 40k I swapped out the rotors with some off a bike that had 15k miles on them. They started to have a pulsation in the brake lever duing light brake applications after a while. I let it go cause it was fine everywhere else. I checked the pads one time around 45k I think and one pad was worn almost completely. The rest we're more than half life!
So I checked that caliper and the pistons to see if they were sticking, they weren't.
Checked the runout on that rotor and it had one spot that was bent. So I got my big cresent wrench out and slowly worked the bend out.
She's got almost 64k on her now and there hasn't been anymore brake issues  
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'06 Passion Red ZX-14
*Lee*
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SteveWFL
Moderator
Posts: 27920
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posted July 21, 2010 12:24 PM
Edited By: SteveWFL on 21 Jul 2010 20:25
quote:
She's got almost 64k on her now and there hasn't been anymore brake issues
Must be a HONDA bike!
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2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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INTIMIDA2OR
Needs a life
RED rider!
Posts: 13081
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posted July 22, 2010 02:03 PM
Edited By: INTIMIDA2OR on 22 Jul 2010 22:06
quote:
quote:
She's got almost 64k on her now and there hasn't been anymore brake issues
Must be a HONDA bike!
No it's a KWAKA 
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'06 Passion Red ZX-14
*Lee*
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gilberjj
Needs a job
Friend of Fast
Posts: 3196
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posted July 23, 2010 05:04 PM
haha, kwaka! That's good. I looked at my pads and I don't have much left on the front. Where's the cheapest place to get pads?
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zixxer14
Pro
Damn that was Quick
Posts: 1233
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posted July 23, 2010 06:17 PM
Edited By: zixxer14 on 24 Jul 2010 02:34
Ebay has a set (both sides) for $50. EBC FA417/4HH from mryamaha2010. Just put them on yesterday. Killer price, less than half of what I paid for the last set. I may have to buy a 2nd set for reserve.
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zixxer14
Pro
Damn that was Quick
Posts: 1233
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posted July 23, 2010 06:22 PM
Edited By: zixxer14 on 24 Jul 2010 02:33
Link for pads....
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=190420709385&viewitem=&sspagename=STRK%3AMEWAX%3AVRI
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