KZScott
Needs a life
high on speed
Posts: 7235
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posted September 06, 2009 02:27 PM
brake drag
so my front brakes are dragging terribly, its been getting worse and worse lately, i dont think its a bent rotor as there doesnt seem to be a tight or loose place in rotation. feels like the calipers are just sticking. can i clean/ resuse the seals or do i need to get all new internals?. Im 99% sure i have all the air out of the system. my bike is way harder to push around than dads. (i still went 154mph on pump gas NA today though  )
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
  
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted September 06, 2009 02:47 PM
I compressed the rear piston installed the pads and never pumped the rear to build pressure...
I wouldnt worry about the front...
You can losen up the front axle then retorque it 10lbs. less, same for the rear axle!!!...Dont forget to take the axles out clean them and grease them...
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Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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KZScott
Needs a life
high on speed
Posts: 7235
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posted September 06, 2009 02:51 PM
the rear isnt dragging, the front is a lot more than other bikes.... the wheel spins great with the calipers off(on the stand) its not bearings
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01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted September 06, 2009 03:07 PM
Clean the front end...spray simple green on the calipers and get in there all you can....Then hose it off...thats it...
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Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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tcchin
Zone Head
Posts: 867
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posted September 06, 2009 05:09 PM
It could be a hanging caliper seal or warped pad backing plates. If the seals are hanging, cleaning the calipers won't do much good. Even if there is an initial improvement, it won't last long. Cleaning the calipers and pistons (inside & out) and replacing the seals is the only way to ensure fix. Of course, replacing the pads is the only way to fix a warped backing plate. A very light coating of thin silicone grease will help protect the seals from oxidation.
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KZScott
Needs a life
high on speed
Posts: 7235
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posted September 06, 2009 05:17 PM
thank you Tim, ill get new seals and rip everything apart. i know it has to be costing me mph and et... dads bike rolls so much easier in the pits
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted September 06, 2009 09:38 PM
Scott...I dont understand???
Your calipers are sticking causing the brake pads to have constand pressure on the rotors but you still run 154mph...Doesnt seem like its a problem with that mph???
Your dads bike is easy to push around but only goes 145mph???
Sounds like your doing extra work for nothing???
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Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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entropy
Moderator
Posts: 8671
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posted September 06, 2009 10:23 PM
Scott,
my front & rear brakes to drag, but don't anymore.
take em all apart, remove seals, clean pistons & cylinders until no crud is left.
Fora a race bike? assemble without dust seals.
it's that easy, no drag.
Andy tip, 4? yrs ago.
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This moderator uses moderation in moderation
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KZScott
Needs a life
high on speed
Posts: 7235
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posted September 07, 2009 05:05 AM
CR, dad has a solid 65 pounds on me, doesnt do a proper tuck, and has a motor that makes less HP. I think mine would go 155 or 156 if we swapped brake systems, and his would slow down equally
Hey Karl, so are you saying reuse the inner seals, but dont put in the outer ones? how often do you need to take them out to clean them this way?
thx!
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
|
posted September 07, 2009 05:15 AM
Scott, i'll bet you your mph would be higher if you retuned the way your bike is set up...Your front brakes are not the problem...
Suspention, clutch, riding tecnique...
____________
Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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KZScott
Needs a life
high on speed
Posts: 7235
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posted September 07, 2009 05:24 AM
im all ears, what do you suggest?
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
|
posted September 07, 2009 05:36 AM
You need to figure out what your riding style is and tune the clutch to your style OR change your riding style / tecnique...Change your suspention set up to that style.....Meaning: One needs to tune in to yourself first !!!
Anyone can tell you do it like this...But if your not like that then it doesnt work !!!
Start over but from the BOTTOM UP.....Not from the TOP down!!!
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Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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entropy
Moderator
Posts: 8671
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posted September 07, 2009 06:05 AM
quote:
Hey Karl, so are you saying reuse the inner seals, but dont put in the outer ones? how often do you need to take them out to clean them this way?
thx!
clean em in about a year, year & a half.
if the inner seals don't leak, no need to change them, but i replaced em out of general principles
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KZScott
Needs a life
high on speed
Posts: 7235
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posted September 07, 2009 06:22 AM
thx! you da man
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
entropy
Moderator
Posts: 8671
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posted September 07, 2009 08:06 AM
Scott,
like CR says, i don't think you will pick up much, if any mph, as 154 is already flying.
BUT, i hate dragging brakes and the fix is soooooooooooooooo easy.
several years ago when i posted that i ditched the dust seals i caught a lot of flack, but as far as I can see there is no down side for a track bike.
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This moderator uses moderation in moderation
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted September 07, 2009 10:19 AM
"Meaning: One needs to tune in to yourself first !!!"
Lots of truth here. Tune the bike to your riding style.
Also, changing stuff every time you go out, does not lead to a ton of gain.
____________
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KZScott
Needs a life
high on speed
Posts: 7235
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posted September 07, 2009 02:54 PM
the only change i did to the bike this time was soften the spring and compression a bit as it wasnt squatting down enough(and its still not) and i was not running a lock up friday or sat because the mail man didnt deliver on time. i didnt make any changes to the lock up from last time i was there when i ran it sunday, but it was too late as i cooked the pack running 6 muzzy springs. i even broke a big fiber close to the bottom of the pack....BUT i think it was from the hub being so rough... again...
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
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