posted July 07, 2006 07:01 PM
ZX14 Sprocket 101...... thinking out loud! Everyone is somewhat interested in tricking the ECU top speed restriction. But sprocket science say that if you go up on the front sprocket or down on the rear sprocket you are going to increase your top end speed. 1 your speed will be faster than what is indicated on the speedo. 2. This should help with lauching the ZX14 ie keep the front tire on the ground and stop some rear wheel spin. This could also help with lauching because going to a smaller rear sprocket will move the wheel to the rear of the swingarm, improving traction. Old school says that one tooth on the front sprocket is equivalent to three on the rear.
3. I think it could work in fooling the ECU. three teeth down on the rear sprocket will give you 5mph. One tooth up on the front will give you 5mph plus the 186 plus 10mph eqauls 196 actual speed...... what do you all think, and i'm waiting to hear from U
WHO IS GOING TO TRY IT.
posted July 07, 2006 08:57 PM
I believe that you would probably run out of motor at maximum velocity.... you would need more power to actually get the bike to pull the top speed. I have no idea if you would actually trick the ECU.. that is possible, but I really believe that the bike would die up on top pretty bad?? Just my input... I think of it like a 10 speed bike... think of trying to pedal with the big front sprocket and the little one at the back. If you go up a hill at all you lose all of your drive... On a motorcycle, when it is running up against the wind, it will have the same effect. I am not a pro racer, but in the last 30 years of hanging with bikes this is what I have (thought) I understood. If I am wrong I need to know so I can take the 10 speed gears off of my 14 now??!! kidding
Needs a life
Full throttle!
Posts: One MEEEEEELLION
posted July 08, 2006 06:55 AM
3 down on the rear would *kill* top end. Unless you had at least a 50 shot.
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82 Gpz750, 84 Ninja 900, 2000 ZX12R (Muzzy Big Bore Kit), *another* 2000 ZX12R (Muzzy custom stroke crank 1341cc motor), 2004 ZZR1200, 2005 ZX10R, 2007 ZX14, 2008 Concours 14, 2014 Versys 650, 2014 Yamaha WR450F, 2015 Ninja H2
posted July 08, 2006 09:20 AM
They have already taken a stock zx14 to Maxton with the only mod being a 18t front, it tricked the ecu and allowed the bike to record an offical 196 mph run.
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2006 ZX14, Brock CT-Meg, PC, ignition module, E85, 214 lbs suited, 8.96@152.32 1.46 60'
posted July 08, 2006 09:37 AM
I went DOWN to 16 in the front for even more accelereation.
This allowed me to move the rear wheel back 1 inch, that and lowereing the bike 1.25 inches frt and rear made the bike much less wheelie prone, even with the extra torque.
With Brocks pipe and mapping I am very certain my bike would pull the 18, or 38 sprocket for increased speed, as it makes 25 RWHP more at around 10,500 rpm compared to the stocker which begins to fall off the pipe at 9500 rpm.
You wanted to hear from US,........ this is my personal experience.
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natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
posted July 08, 2006 10:08 AM
dubious did you have to lower it to keep it on the ground. Also i know it revs alot faster. Will it redline in 6th gear. I have a 16, sh and tre coming. I dont know how the bike is going to feel with the extra items. Do you enjoy the 16? Is it harder to launch without it being lower.
Ok Guys Hear this!!! We all have some idea of what sprocket can do so just try to grasp what I am saying. In launching the 14 there are some problems traction is one and wheelies are the other. If you went down two or three teeth on the rear sprocket dont you think you could give more throttle because the gear is longer and help in keeping the front wheel on the ground and I would more the rear wheel to the rear of the swingarm for more traction. For Top speed still using the rear sprocket down three teeth. the speedo would be slower than your actual speed giving more top end. I want those who drag race to give it a try and see what happens
swiftkart
Novice Class
Posts: 95
posted July 08, 2006 10:20 AM
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They have already taken a stock zx14 to Maxton with the only mod being a 18t front, it tricked the ecu and allowed the bike to record an offical 196 mph run.
posted July 08, 2006 10:49 PM
Serius blk:
Totally Stock, with 16, was a little more wheelie prone, with street traction.
Under optimum traction was even more wheelie prone.
Once I lowered it 1.25 " frt and rear, it became alot less wheelie prone than stock, even with smeg and flies out mapped properly, it is less wheelie prone than stock.
It sure spins the tire alot on the street now though.
16 tooth, smeg, flies out, mapped properly, and lowered 1.25 both ends.
1st, 2nd, and sometimes 3rd, it lights her right up.
I haven't taken it to the 1/4 since completeing all mods, but I will strap it there, and adjust the rear down.
It still walks away from every natuarally aspirated street legal bike I've come across so far!
My buddy has 05 GXSXR 1000, which is piped, and mapped, -1 tooth on front, and he has major wheelie problems, whereas, i just ride away!
If he stretched it , it would be a real good race! He likes wheelies more than dragging though, so is reluctant.
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
posted July 08, 2006 10:57 PM
Back to the 18 tooth, for drag racing, if the secondary plates were pulled, it might help.
On a completly stock bike, I think it would fall on its face unless kept above 6000 right off the line......... mine did that with my 190 lb ass.
Even if it fell to 5500, it would take a while to pick the steam back up.Enough to hurt ET's.
The launch above 6000 rpm would become even more critical, .......... therfor the clutch would see more abuse too.
I wont be going 18 for drag racing, not even for 1 run.
I don't know of anyone who gears their bike to a mechanical disavantage by going taller, for drag racing.
Let us know what you find out.
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
Ok Guys Hear this!!! We all have some idea of what sprocket can do so just try to grasp what I am saying. In launching the 14 there are some problems traction is one and wheelies are the other. If you went down two or three teeth on the rear sprocket dont you think you could give more throttle because the gear is longer and help in keeping the front wheel on the ground and I would more the rear wheel to the rear of the swingarm for more traction. For Top speed still using the rear sprocket down three teeth. the speedo would be slower than your actual speed giving more top end. I want those who drag race to give it a try and see what happens
No offense, but learn to ride better. If you gear the 14 up and try to launch it...have fun trying to get out of the bog.
posted July 09, 2006 05:09 PM
16 front 43 rear I had a little spare time so I wanted to see how 16 teeth of the front and 43 on the rear would feel. I have the secondary butterflies out also but standard pipes. I warn anyone contemplating this even for a trial. Be VERY careful on throttle application even in higher gears!!!! Wheelies? anywhere , anytime, any gear except 6th. It was scarey to say the least. Now back to 16 front and 41 rear. Still wild but a little more managable on the roads..
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Chez
posted August 08, 2006 03:09 PM
Chez,
What did you find made the biggest difference, 16T or pulling the flies out?
I kinda like the idea of gearing up and pulling the flies to rid the bogging problems.
____________ Texas Mile 200.256mph - Oct. 2007 (Update 202.577mph Oct 2008) NOS assisted ECTA Ohio Mile 195.132mph TexasMile 2012 199.9 mph all motor!
Streetriders Shootout 2008 series Pro/ET Champ!
Streetriders Shootout 2007 Series Pro/ET Runner-up!
quote:Chez,
What did you find made the biggest difference, 16T or pulling the flies out?
I kinda like the idea of gearing up and pulling the flies to rid the bogging problems.
PULLIN' THE FLIES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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posted August 08, 2006 04:38 PM
Da blk 1 - Bear in mind that gear reduction multiplies torque. In other words, by gearing up (larger front and/or smaller rear) you're reducing the torque applied to the ground. You're also increasing the time to peak horsepower, and doing so in every gear.
posted August 08, 2006 04:52 PM
Yes Pulling The Flies Pulling the flies makes the most difference in a big way...........Hang on baby.
____________
Chez
posted August 09, 2006 10:11 PM
do both..flies and gearing ..and you'll get the bike Kawasaki intended you to buy..oh yeah add gas to your maps..lots...
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