Answers to Chain Length, Gear Ratios, Sprockets, Speed in Gears.

I have a gen 2 that I'm about to stretch 4 inches. All my buddies are telling me to drop 1 tooth in the front. I'm about 230lb suited. Will I notice a huge difference by going to a 17/43 gearing. And how much top end will I lose. Not that I need to go 180mph on the street. Lol
 
Hello everyone I´ve just traded my Gen 1 Hayabusa for a Gen 2. I used to use a 15/43 gearing with the original chain, and loved the difference !!! Now the Gen 2 Haya has a factory 18/43 gear with a 120 link chain. what gear ratio should I use to have the same effect with the original chain, 15/47 maybe? I don´t know ...
 
raicoelho said:
Hello everyone I´ve just traded my Gen 1 Hayabusa for a Gen 2. I used to use a 15/43 gearing with the original chain, and loved the difference !!! Now the Gen 2 Haya has a factory 18/43 gear with a 120 link chain. what gear ratio should I use to have the same effect with the original chain, 15/47 maybe? I don´t know ...
Click to expand...

According to Gearing Commander,with 15/47 you'd top out in 6th(10,500 rpms)at 146.5 mph.

http://www.gearingcommander.com/
 
RSXtypeS said:
I have a gen 2 that I'm about to stretch 4 inches. All my buddies are telling me to drop 1 tooth in the front. I'm about 230lb suited. Will I notice a huge difference by going to a 17/43 gearing. And how much top end will I lose. Not that I need to go 180mph on the street. Lol
Click to expand...

You'll definitely notice the difference bro and will still be fine for freeway cruising.I have a Gen II,4" over(and my fat ass is 255 nekid:laugh:), run 18/47(though it's more like 18/45 since I'm running a 200/55 rear tire) and have no issues with it.You can play around on Gearing Commander and get some idea of rpms x gear ratios to see where you might want to be at.

http://www.gearingcommander.com/
 
If you're going to do much freeway riding I personally wouldn't go much above 18/45-18/47 as you'll hate the rpm jump when cruising at 75-80 mph,and even at 4" you'll still probably have to contend with 1st gear wheelies(especially with 18/47).15/43 would be in the neighborhood of 18/51-52 which is a whole lot of gear and definitely a wheelie machine.:D
 
I have a question I have a gen2 hayabusa with stock sprocket I'm about 330 in weight the bike has been flashed and tuned on pump gas i was thinking about going 17 45 with the sprocket set up or what's the best option the bike is about 67inches now
 
Cdixon88 said:
I have a question .

I have a gen 2 Hayabusa with stock sprocket .

I'm about 330 in weight
the bike has been flashed
and tuned on pump gas .

I was thinking about going
17 45 with the sprocket set up
or what's the best option ?

The bike is about 67 inches now .
Click to expand...

Perhaps a Gen 2 Hayabusa isn't the bike you really need ~ maybe look at a B-King or even a V-Max *

suzuki-hayabusa-fat.jpg


If your Hayabusa is stretched and you want to drag race the eighth mile only . . .

Then go ahead and add teeth to the rear sprocket if you would like *

It will be much easier to let the clutch go with low gears .

If you want to go really fast on the highway .

Then leave the gear ratio all stock .

And try to make POWER .

Or loose weight .

Red, *<(;{)-
 
Viperam said:
In my search to get info for sprocket swaps, extended swing arms, chain lengths, and speed in gears i spent way to much time trying to find everything i needed. So i compiled everything i found into this thread to make things easier for other people and reduce repeated threads. All the information is here, just not all in the same location. There are Calculators EVERYWHERE but they do not fill themselves out. You will need this information.

Chain Length
Gen 1 Stock Chain 530 pitch 112 links with a 17 Tooth Front and 40 Tooth Rear
Gen 2 Stock Chain 530 pitch 114 links with a 18 Tooth Front and 43 Tooth Rear

Stock chain within stretch limits can handle a maximum sprocket swap of
-1/+3
0/+4
+1/+5

Swingarm Extensions
Extended Add
0-3"______+10 Links
3-6" _____+20 Links
6-9" _____+30 Links
9-12" ____+40 Links
12-15" ___+40 Links or Add an addition 10 or +50 links for a 630 Chain

2 inches over add 6 links
4 inches over add 12 links
6 inches over add 20 links
8 inches over add 26 links
9 inches over add 28 links
10 inches over add 32 links
12 inches over add 38 links

Sprocket Ratio
Gear Front/Rear Sprocket Combinations
Sprocket ratio chart
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
28 2.80 2.55 2.33 2.15 2.00 1.87 1.75 1.65 1.56 1.47 1.40 1.33 1.27 1.22 1.17
29 2.90 2.64 2.42 2.23 2.07 1.93 1.81 1.71 1.61 1.53 1.45 1.38 1.32 1.26 1.21
30 3.00 2.73 2.50 2.31 2.14 2.00 1.88 1.76 1.67 1.58 1.50 1.43 1.36 1.30 1.25
31 3.10 2.82 2.58 2.38 2.21 2.07 1.94 1.82 1.72 1.63 1.55 1.48 1.41 1.35 1.29
32 3.20 2.91 2.67 2.46 2.29 2.13 2.00 1.88 1.78 1.68 1.60 1.52 1.45 1.39 1.33
33 3.30 3.00 2.75 2.54 2.36 2.20 2.06 1.94 1.83 1.74 1.65 1.57 1.50 1.43 1.38
34 3.40 3.09 2.83 2.62 2.43 2.27 2.13 2.00 1.89 1.79 1.70 1.62 1.55 1.48 1.42
35 3.50 3.18 2.92 2.69 2.50 2.33 2.19 2.06 1.94 1.84 1.75 1.67 1.59 1.52 1.46
36 3.60 3.27 3.00 2.77 2.57 2.40 2.25 2.12 2.00 1.89 1.80 1.71 1.64 1.57 1.50
37 3.70 3.36 3.08 2.85 2.64 2.47 2.31 2.18 2.06 1.95 1.85 1.76 1.68 1.61 1.54
38 3.80 3.45 3.17 2.92 2.71 2.53 2.38 2.24 2.11 2.00 1.90 1.81 1.73 1.65 1.58
39 3.90 3.55 3.25 3.00 2.79 2.60 2.44 2.29 2.17 2.05 1.95 1.86 1.77 1.70 1.63
40 4.00 3.64 3.33 3.08 2.86 2.67 2.50 2.35 2.22 2.11 2.00 1.90 1.82 1.74 1.67
41 4.10 3.73 3.42 3.15 2.93 2.73 2.56 2.41 2.28 2.16 2.05 1.95 1.86 1.78 1.71
42 4.20 3.82 3.50 3.23 3.00 2.80 2.63 2.47 2.33 2.21 2.10 2.00 1.91 1.83 1.75
43 4.30 3.91 3.58 3.31 3.07 2.87 2.69 2.53 2.39 2.26 2.15 2.05 1.95 1.87 1.79
44 4.40 4.00 3.67 3.38 3.14 2.93 2.75 2.59 2.44 2.32 2.20 2.10 2.00 1.91 1.83
45 4.50 4.09 3.75 3.46 3.21 3.00 2.81 2.65 2.50 2.37 2.25 2.14 2.05 1.96 1.88
46 4.60 4.18 3.83 3.54 3.29 3.07 2.88 2.71 2.56 2.42 2.30 2.19 2.09 2.00 1.92
47 4.70 4.27 3.92 3.62 3.36 3.13 2.94 2.76 2.61 2.47 2.35 2.24 2.14 2.04 1.96
48 4.80 4.36 4.00 3.69 3.43 3.20 3.00 2.82 2.67 2.53 2.40 2.29 2.18 2.09 2.00
49 4.90 4.45 4.08 3.77 3.50 3.27 3.06 2.88 2.72 2.58 2.45 2.33 2.23 2.13 2.04
50 5.00 4.55 4.17 3.85 3.57 3.33 3.13 2.94 2.78 2.63 2.50 2.38 2.27 2.17 2.08
51 5.10 4.64 4.25 3.92 3.64 3.40 3.19 3.00 2.83 2.68 2.55 2.43 2.32 2.22 2.13
52 5.20 4.73 4.33 4.00 3.71 3.47 3.25 3.06 2.89 2.74 2.60 2.48 2.36 2.26 2.17

When using Sprocket Caculators use these Gear Ratios For stock or reference the chart above for sprocket swaps.
Primary Ratio 1.596 For both Gen 1 and Gen 2
Sprocket Ratio is 2.353 For Gen 1, and 2.394 for Gen 2
Gear 1 - 2.615
Gear 2 - 1.937
Gear 3 - 1.526
Gear 4 - 1.136
Gear 5 - 1.136
Gear 6 - 1.043

Stock Tire Is 76.75 inchs or 1953.4mm in diameter if it is Bridgestone Battlax BT-015 190/50R17
Chain Pitch 15.8752mm

Rev Limit
10,800 Gen 1
11,300 Gen 2

Gearing Commander: Motorcycle Gear Ratio Calculator for Sprockets RPM Speed Chain (all around calculator)
Motorcycle gear/rpm/speed calculator (Motorcycle gear/rpm/speed calculator)
SPROCKET SPECIALISTS-Sprockets for all makes of bikes. (Chain Length and Gearing Calculator)
http://www.dropbears.com/u/utilities/images/Gearing_V12.zip (Easy program calculate thespeed in any gear at any given rpm)
Click to expand...
Holy crap!!! I never seen any of that. What you really looking for in quarter mile drag racing is to be at the top of 5th gear just before your rev limiter. That's what you should be reaching for and that's going to help you out of the hole you're 64 your 3:30 and everything you want to be top of v Hayabusa at the end of the quarter mile running about 11000 RPM
 
Motonutz916 said:
Holy crap!!! I never seen any of that. What you really looking for in quarter mile drag racing is to be at the top of 5th gear just before your rev limiter. That's what you should be reaching for and that's going to help you out of the hole you're 64 your 3:30 and everything you want to be top of v Hayabusa at the end of the quarter mile running about 11000 RPM
Click to expand...
Hi. More like 13250 RPM. Yes they can rev that high with a good build and the correct parts and and a lot of $.
 
Ok I have an 05 busa replacing from and rear sprockets it is stretched when I counted links not including master link I got 61 every where ive looked said multiply that by 2 and thats my chain length is that true?
 
I just went to a 16 tooth front on my 05 Busa. The calculator shows about a 7% reduction in speedometer change. My GPS showed about 10.5%. I adjusted my Speedo Healer to correct it. I did not check my speedo calibration before the swap though.
 
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