MADNINJASKILLS
Novice Class
Posts: 37
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posted October 10, 2009 08:13 PM
Thanks again Dubious for your help.
Big Dave
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2008 Atomic silver ZX14
2004 GSXR 1000
1998 Honda Valkyrie
  
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Pretty Fast
Expert Class
Posts: 116
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posted October 11, 2009 10:47 AM
What's up Dubious! I'm new to the forum and I was going through some of the threads, then I ran across this one. Very interesting! I see where most of the people have come to you for advice on this topic. Count me in as one of them. I currently have a 1417 piston kit, head/cams, extentions. Making 210 HP at the rear. I'M 225 Pds. I currently have a 17/43 but I have shuffled the gearing around a few times over the years, 16/41, 16/43, 17/40, 17/41, 17/43, 18/40 and 18/43. I won't be going back to a16 frt sprocket. I don't want to gear any lower than stock, (17/41). I'm more interested in top end speed than bottom. Which gear ratio do u see with the most potential top speed for my application with 1 corner rounded and what speed could I potential reach between these 4 ratios, 17/40, 17/43, 18/40, 18/43? Thanks!
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted October 11, 2009 11:55 AM
Since I am unfamiliar with that engine package, I would find out what RPM peak HP is made, and gear it so it will acheive max velocity at max HP, or slightly higher rpm.
You need to make the most of the rpm at which peak power is made.
It is impossible for me to give you that exact ratio.
The gearing commander link I posted will give you the max speed of all those ratios, I would use the RPM at which peak HP is made as the target RPM in the calculator.
I would be suprised if the bike did not have the steam to pull 205 mph.
It depends on technique, elevation, wind resistance, distance, etc as well.
A speedohealer, or the new muzzy module,
Set the speedohealer up for -50% or some other arbitrary number, so you don't trip the speed limiter, and start making pulls with a GPS or radar gun.
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted October 11, 2009 12:52 PM
quote:
Thanks again Dubious for your help.
Big Dave
Hey, no problem Dave!
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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Pretty Fast
Expert Class
Posts: 116
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posted October 11, 2009 07:35 PM
quote:
Since I am unfamiliar with that engine package, I would find out what RPM peak HP is made, and gear it so it will acheive max velocity at max HP, or slightly higher rpm.
You need to make the most of the rpm at which peak power is made.
It is impossible for me to give you that exact ratio.
The gearing commander link I posted will give you the max speed of all those ratios, I would use the RPM at which peak HP is made as the target RPM in the calculator.
I would be suprised if the bike did not have the steam to pull 205 mph.
It depends on technique, elevation, wind resistance, distance, etc as well.
A speedohealer, or the new muzzy module,
Set the speedohealer up for -50% or some other arbitrary number, so you don't trip the speed limiter, and start making pulls with a GPS or radar gun.
The cams are degreed and the engine is setup to pull all the way too the limiter without dropping off. That's at 11 grand. Not really interested in the Healer or the muzzy Module. I was basing my question off of rounding the counter sprocket nut.
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted October 12, 2009 08:35 AM
 Edited By: dubious on 12 Oct 2009 16:42
grinding 2 corners utimately is the safe option, and in theory will allow for 50% speedo , rpm limiter, and gear change combined error, and is the safe bet to keep the bike out of the speed limiter.
After that, testing is the only way to realise the maximum top speed any configuration will acheive.
Grinding the nut will not acheive an accurate speedo as well though with the exception of 16-45 gears approx.
A speed correction device is the best way to bypass the speed limiter, and dial in a calibrated speedo.
I will refrain from guessing what will or will not work.
I would rather give no info, than false info.
I will say that if any configuration is making enough power to overcomethe soft limiter, and in effect extend the rpm limit , or gearing lower than 16-45 will likely require 2 corners to be ground down.
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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Rideharder
Zone Head
Posts: 821
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posted October 12, 2009 12:02 PM
Edited By: Rideharder on 12 Oct 2009 20:12
dubious I have a question.
I am running a 16/41 my power curve is at 9500 RPMs and the horsepower is 180 HP..
The bike is not stretched and only lowered an inch..
They sent me the unlock code for the RPMs for my power commander which I asked for 500.
My weight is actually 225 pounds
I am running the speedohealer so I guess I don't have to grind the nut..
what overall difference would you say I would see in the 17/43 then the 16/41?
I'm thinking about going with a 17/43 and would like to know your opinion on the overall difference.
16/41 or 17/43?
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Rideharder
Zone Head
Posts: 821
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posted October 12, 2009 12:18 PM
quote:
Dubious, I have a question about the RPM limiter. I have a speedohealer correcting error and then dropping to KMH. Is the rpm limiter dedicated to 6th gear, meaning 6th is ALWAYS restricted to 9250? And does that mean top speeds runs are done in 5th IF a corner has not been ground off the nut?
So it is more beneficial to still grind off the nut even if you have a speedohealer?
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Rideharder
Zone Head
Posts: 821
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posted October 14, 2009 05:43 PM
dubious did your brain overload or what?
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gsxrassassin
Expert Class
Posts: 225
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posted October 15, 2009 07:09 AM
All I can say about this information is THANKS!! I will be getting the Dremel warmed up shortly to handle the grinding job. Going with 1 corner off. It sounds like this will be more than enough to allow the bike to reach its potential. I'm not worried about normal riding because I can judge my speed off traffic. This is great, great information!!
GSXR
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Over the hump, back up and running again!!
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Pretty Fast
Expert Class
Posts: 116
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posted October 15, 2009 09:10 AM
quote:
All I can say about this information is THANKS!! I will be getting the Dremel warmed up shortly to handle the grinding job. Going with 1 corner off. It sounds like this will be more than enough to allow the bike to reach its potential. I'm not worried about normal riding because I can judge my speed off traffic. This is great, great information!!
GSXR
Yes it is great info and a great and cheap mod! does anyone know who came up with this mod, on this thread. I would like to commend them for that.
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Pretty Fast
Expert Class
Posts: 116
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posted October 17, 2009 08:47 PM
Dubious or anyone for that matter that can help me with this, when you are going for top speed on the 14, do u hit 186 before the tach hits the limiter or is this bike capable of hitting the limiter in 6th gear?
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DEK
Parking Attendant
Posts: 14
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posted May 18, 2010 05:42 PM
quote:
i'm going to grind down the corner or 2 corners on my resrictor nut and see what the gps reads.
Your GPS will read the same!!
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BobC
Pro
Posts: 1736
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posted May 19, 2010 04:42 AM
Edited By: BobC on 19 May 2010 12:43
Anyone using the Bonneville box? How does it compare with the Speedo Healer?
____________
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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freddie900
Expert Class
zx 14 2007
Posts: 152
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posted May 19, 2010 05:04 PM
Has anyone flashed their ECU instead of the most common ways to get pas the speed restriction?
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freddie900
Expert Class
zx 14 2007
Posts: 152
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posted May 19, 2010 05:10 PM
ECU
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freddie900
Expert Class
zx 14 2007
Posts: 152
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posted May 19, 2010 05:47 PM
quote:
16/43 just grind one corner, your speedo will read about 6% lower than actual.
1 corner reduces speed reading by 25%, 2 by 50%, not sure if side by side, or opposite makes any difference... I doubt it would . Vibration Balance maybe?
here is a link for gearing info:
http://www.gearingcommander.com/
The zx14 tach is about 600 rpm optomistic, and the speedomoter 8% optimistic
So you know stock, a zx14 hits 174-175 mph at 9250 actual rpm on the speed limiter.
thats stock 17/41 gears. That is actual limited speed stock.
with the speed limiter removed, at 10,500 actual rpm = 198 actual mph derestricted on 10,500 RPM REV limiter ,
[ remember this is actual, not what the guages say- the tach will read about 11,000 at 186 indicated ]
16/41 @10,500 rpm limiter derestricted speed limiter = 187 actual mph
16/43@ 10,500 rpm limiter derirstricted speed limiter = 178 actual mph
198/ 178= 11% + 8% correction =19 % total.
25% (for the corner ground off) -19%( new gears and speedo calibration) = 6% difference, but reading low, rather than 8% high.
what top speed will i get with derestriction with a 180/55 rear tire & stock gearing? and 16/41 gearing?
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n2ojunkie
Parking Attendant
Posts: 8
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posted May 20, 2010 03:31 PM
Ok I am new here and have been reading this whole thread, and still have a couple of questions. Is the speed limiter RPM related or speed related? Meaning I am reading 9250rpm in sixth is 187mph, Does the bike stop due to reaching 9250 rpm in 6th. or is it that the speedo reads 187?
Second if thats the case why not trick the bike into thinking its in 5th? doesn't the TRE do that already by tricking it into thinking its in 6th all the time? Shouldn't be that hard to have it switch between 5th and 6th when you want it to right?
Go ahead I am a newb so let me have it lol
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