KZScott
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posted October 02, 2007 04:05 PM
what do i need to drill my rotors? (q for nox?)
I have completely stock rotors on my 12, and its bugging me lol. they could be lighter! instead of going aftermarket (need money for tranny/motor) i want to drill the holes bigger myself. i have access to a good drill press. how big can i make the holes? do i need special drill bits? am i going to be needing to sharpen the bit every few holes? (i have a drill dr so it wouldnt be too big of a deal to sharpen the bit) do i have to chambfer(sp?) the holes any? can i put in extra holes? (if so where?)
looking to keep both rotors up front, i know some guys run only 1, so as much weight as i can(safely) drill away is what im after!
thx guys!
____________
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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TurboBlew
Moderator
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posted October 02, 2007 05:00 PM
Its not worth your time or trouble.
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KZScott
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posted October 02, 2007 08:00 PM
i have lots of time....and i enjoy working on my bike to make it faster. even if its just a tiny bit at a time
____________
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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TurboBlew
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posted October 02, 2007 08:16 PM
Ok... then simply remove 1 rotor and caliper. That will drop ~8lbs.
Your stock rotors are fixed. If you want to drop some "rolling resistance" ... go to full floating rotors or spread your brake pads apart.
If you want stopping power.... dont drill your stock rotors.
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VincentHill
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posted October 03, 2007 09:10 AM
TB, WHat is the Official Member ROK about!
The steel is very hard specially after being used and heated and cooled! then laying out a pattern and not getting into thje stress areas. Last, avoiding the Frequency problems and pad Destruction if they are not champered enough!
I took mine somewhere (Machine Shop and had it done to NON Drilled disc)
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nox
Needs a job
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Posts: 3745
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posted October 03, 2007 04:50 PM
I did mine in a machine shop.......
You need to champher them after drilling the holes.....
it is worth the time, if you already have access to the tools...........
turbo, I stop just fine, and can still lock the wheels at any speed.............
One front drilled rotor, 3/8 holes, rear holes are 1/2 inch.........
Took a long time, must go slow, and lube the drill on the press..........
Cost, for me.........free.
____________
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21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
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Sponsored by:
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KZScott
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posted October 03, 2007 06:25 PM
any special drill bit nox?
____________
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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nox
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted October 04, 2007 04:39 AM
A VERY GOOD ONE>>>
Drill it like 3/8 first, then 1/2 on the rear, , makes drilling easier, and use LOW speed on the drill press......
dont go over 3/8 on the front, takes too much metal away.
____________
42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
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Kawasaki Sports Center
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big al
Novice Class
Posts: 52
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posted October 04, 2007 08:57 AM
quote:
Ok... then simply remove 1 rotor and caliper. That will drop ~8lbs.
Your stock rotors are fixed. If you want to drop some "rolling resistance" ... go to full floating rotors or spread your brake pads apart.
If you want stopping power.... dont drill your stock rotors.
The stock rotors are semi floating, fixed rotors are one piece bolted to the rim, full floating rotors fit loose on the buttons to center the rotor with the caliper pistons faster and more accurately .
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salsa1
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posted October 04, 2007 09:57 AM
 Edited By: salsa1 on 4 Oct 2007 10:58
Drilling rotors has to be at least .0000000000001 sec shaved off the 1/4 mile... 
I like the idea of simply removing one rotor if possible much better...but ok whatever... a guy can do what he wants with his time and money I usually believe...I do anyways.. 
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TurboBlew
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posted October 04, 2007 05:04 PM
Edited By: TurboBlew on 4 Oct 2007 18:04
I still dont see what the benefit of chamfering or drilling the stock rotors is.
Sure the stock ones are "semi" floating....lol. You put enough heat to em and they'll warp.
If semi means you'll be replacing them soon.. then yes I would agree.
quote:
I did mine in a machine shop.......
You need to champher them after drilling the holes.....
it is worth the time, if you already have access to the tools...........
turbo, I stop just fine, and can still lock the wheels at any speed.............
One front drilled rotor, 3/8 holes, rear holes are 1/2 inch.........
Took a long time, must go slow, and lube the drill on the press..........
Cost, for me.........free.
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NOX
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posted October 05, 2007 08:19 PM
look at it this way, cost me nothing, and it does help a little, even if its .02 , thats .02. Every little bit adds up
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2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
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Sponsored by:
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KZScott
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posted October 06, 2007 05:43 AM
quote:
look at it this way, cost me nothing, and it does help a little, even if its .02 , thats .02. Every little bit adds up
thats how Im looking at it. what if I ran a best of 9.01 with undrilled rotors next yr....
____________
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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NOX
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posted October 06, 2007 11:29 AM
exactly
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MadMike
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posted October 10, 2007 05:20 PM
time cost's $$$...
and once you use it you never get it back...
of course I would rather spend a day drilling out my rotors then sitting on the couch... but then again I would rather buy a set of lightweight rotors, mount one and have a spare and then spend time with my kids...
but to each his own...
if it makes you satisfied and happy they freaking do it!!! and dont listen to anyone else!
Mad Mike
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NOX
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posted October 10, 2007 06:13 PM
takes about two hours........, if you have a drill press, I would not do it without a press.......
My daughter helped......
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42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
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Galfer Braking
AMSOIL
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Mickey Thompson Tires
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KZScott
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posted October 10, 2007 06:42 PM
well im off work cause im having my shoulder operated on (again) so i have the time. and i have no kids, not planning on having any for quite a few yrs too! lol
nice to see you spent some quality time with your daughter nox, is she going to be a racer too? jr dragster in the works?
____________
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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MadMike
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posted October 10, 2007 06:43 PM
quote:
takes about two hours........, if you have a drill press, I would not do it without a press.......
My daughter helped......
mine are to young to help... oh dont get me wrong they want to help.... But not just yet... a year or two and we will be good!
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NOX
Needs a job
PMRA / TMRC Super Street 4022
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posted October 10, 2007 06:48 PM
its funny when they start knowing what the clutch, and other parts are........., especially a girl......
Right now I am dealing with......"Hey Daddy Nox, when can I get a bigger motor.........?"
____________
42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers
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shiphteey
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Posts: 2529
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posted October 10, 2007 06:52 PM
I'm now running single up front with a stainless line. Brakes feel like total crap, but that may be due to the brakes needing to be re-bled. Stops just fine at the TX mile from 200 mph to 0 in 1/2 a mile. I waited till about 1/4 mile passed before I would slowly apply the brakes. Hard late braking with literbuddys in the twisties...is....interesting.
KZ, seems like a lot of work for not as much gain. I'm not against it, hell I remove things off my bike that are measured in single digit grams! However, if there are other things on the bike can be removed for about the same time with less effort for more gains, it may be worth pursuing those avenues first.
I tend to run a little "ragged" and sometimes overlook or ignore some safety issues at times. That being said, even I would be a little paranoid about the holes being drilled in the right places. Are you just making the existing ones a little larger up front? Go crazy with the rear, lol!
A.
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KZScott
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posted October 10, 2007 06:54 PM
haha awesome. tell her as soon as the 12 gets a big bore kit, the jr can too
ive had some wild schemes of building a turbo charged jr (in probly 20 yrs) for my future kid(s) mainly to get it to go fast and do it with a nice sound. the alcohol injected lawnmower motors with a straight pipe drive me right up the wall, but i know the kids are lovin it so i let it slide lol
____________
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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KZScott
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posted October 10, 2007 07:02 PM
Ali- just making the holes bigger. im not going to try and add extra holes like i thought might be an option....I wish i had a pic of the rear rotor on a 12 that a buddy of mine used to run. he sold the bike last month to put all of his time and money into getting his turbo 10 to work right.....that 12 (1270) with a pipe, pc3r, 4 inch extensions, strapped, muzzy clutch, drilled/machined rear rotor, filters (i think thats it) ran a 9.0something at 150 in the 1/4 with an ok 60'.....
____________
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
|
KZScott
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Posts: 7235
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posted October 15, 2007 04:33 PM
status update
well I went ahead and drilled the rotors. 3/8 up front and 1/2 in the rear. here are the results:
front (each) before: 1400 grams after: 1350 grams
rear before: 1000 grams after: 840 grams
total weight loss: 260 grams = 9.2oz of Rotating Mass
now, going by the rule that 1 pound of rotating mass feels like 7-10 pounds of static mass, (ill use 8 to be on the "safe" side of the equation) 9.2oz X 8 = 73.5oz = 4.6 lbs
so my bike should "feel" about 4.6 pounds lighter. not really that much, but when you are dragracing or going for top speed in LSR every little bit adds up. Im happy with the results, it wasnt hard, just took some time. plus i think the rotors look better now anyway  .
____________
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
|
NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted October 16, 2007 04:27 AM
That was about what I got, you get a lot more off the rear.......
____________
42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers
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Seth ZX12r UK
Expert Class
Posts: 238
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posted October 16, 2007 05:49 AM
Edited By: Seth ZX12r UK on 16 Oct 2007 06:50
Will you be drilling your wheel spokes?
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