Ran both combinations and was able to run within .5 but the main difference I found was how much easier it was to get out of the gate using 16/42 gearing. You don't have to work hard to get the bike moving. Granted the mighty Busa has a lot of torque but that torque makes the bike inconsistant in the 60'. You can leave at a lower rpm, get the clutch out and control the bike with the throttle. I'm over simplifying the launch process but you get the idea. I personally run 16/44 gearing on mine at 62" wheelbase.
sprocket size
- Thread starter Steve R
- Start date
I am a true sprock-a-holic and have been since I was a young child. I took library books out on gearing mechanisms and ratios when I was in Elementary School to better comprehend their advantages/disadvantages and their applications. When my mini-bike days came upon me (which I constructed myself from a bicycle frame and even motorized my wagon), I knew exactly what gearing to select to yield my top speed.
Now, please examine the photo I’ve included and allow me to welcome you to my extended family. Let’s see, there’s: Ripper, Rocko, Inky, Dinky & Stinky, Hubble (mounted to a 2nd hub and rarin’ to go), the Twister Twins, Blazer, Lancer (prefers “Lanceâ€), Gyro, Torpedo, Hyper Stan, Lugger, Spinner, Slammy, Dirty Hans, Rolley, Sawtooth, Roto, Gnasher, Thrasher & Lawrence, and the rest prefer I not reveal their names until I’ve sought serious therapy. Naturally, I’m just having a little fun here. I didn’t name ANY of these sprockets (THEY told me their names).
All joking aside now, the majority of these sprockets are for my 99 Hayabusa, but a half dozen are for my 01 GSXR1000 and a few of the counter-sprockets are from previous sportbikes I’ve owned. I just can’t seem to part ways with ANY of these simple albeit highly useful objects. They are masterpieces of mechanical simplicity, but marvels of precision to look at when you consider there was no such capability to make these metals objects just a century ago to the level of shear precision, strength, lightweight and speed of production for which they can be mass produced today and at a comparatively low cost.
All hail the might of the modern day Bridgeport!
How’s that for a healthy appreciation for how far civilization has progressed.
Now, please examine the photo I’ve included and allow me to welcome you to my extended family. Let’s see, there’s: Ripper, Rocko, Inky, Dinky & Stinky, Hubble (mounted to a 2nd hub and rarin’ to go), the Twister Twins, Blazer, Lancer (prefers “Lanceâ€), Gyro, Torpedo, Hyper Stan, Lugger, Spinner, Slammy, Dirty Hans, Rolley, Sawtooth, Roto, Gnasher, Thrasher & Lawrence, and the rest prefer I not reveal their names until I’ve sought serious therapy. Naturally, I’m just having a little fun here. I didn’t name ANY of these sprockets (THEY told me their names).
All joking aside now, the majority of these sprockets are for my 99 Hayabusa, but a half dozen are for my 01 GSXR1000 and a few of the counter-sprockets are from previous sportbikes I’ve owned. I just can’t seem to part ways with ANY of these simple albeit highly useful objects. They are masterpieces of mechanical simplicity, but marvels of precision to look at when you consider there was no such capability to make these metals objects just a century ago to the level of shear precision, strength, lightweight and speed of production for which they can be mass produced today and at a comparatively low cost.
All hail the might of the modern day Bridgeport!
I have some questions before doing a sprocket change.
First is the front sprocket. Ive seen pictures of totally flat sprockets as well as sprockets with a thicker center section. What does the Hayabusa come stock with?
Second, what is the base speedo error that one plugs into the Speedo healer calculator with the stock 17/40 sprockets?.
First is the front sprocket. Ive seen pictures of totally flat sprockets as well as sprockets with a thicker center section. What does the Hayabusa come stock with?
Second, what is the base speedo error that one plugs into the Speedo healer calculator with the stock 17/40 sprockets?.
Mr Brown
Registered
I can't remeber what the stock front sprocket looks like, but get an aftermarket from a reputable source, (Street and Track for example) and you'll be fine.
I think a speedohealer comes with a chart to tell you what % to adjust, if not do a search on here, there's one posted somewhere.
fast1200gp
Registered
what sprocket combo would u recommend for a 270lb rider with just basic bolt on's? would prefer to keep it simple and just chenge front for now and leave stock chain?will that work?
The speedo healer error calculator needs to know the error on a stock bike as one of the inputs. I wanted to know how fast in % the Hayabusa speedo reads.
I would like someone to post a pic of the stock front sprocket. I have seen two different styles of front sprocket for the Busa. I want to know which is the stock "style". When I changed the sprockets on my FZ1, I chose Yamaha OEM ones used on other models. The Yamaha front sprocket is rubber covered and quieter than the aftermarket ones.
I would like someone to post a pic of the stock front sprocket. I have seen two different styles of front sprocket for the Busa. I want to know which is the stock "style". When I changed the sprockets on my FZ1, I chose Yamaha OEM ones used on other models. The Yamaha front sprocket is rubber covered and quieter than the aftermarket ones.
No after market sprocket has the rubber like stock. if that is the one you want then you will have to get the oem one.
There are several different aftermarket front sprockets. We sale a lot of JT, AFAM, Sprocket Specialist, and Vortex front sprockets and never ran across any issues with them. The only one I know with the rubber on them are the OEM ones.
SpeedGeek
Never Forgotten
I went with a 16/42 combo from Street n Track this spring. All I can say is this is THE BEST MOD I have done for "by the seat of your pants" thrills.
I was hesitant to go both front and rear because I thought my mileage would suffer and it would be turning high revs on road trips.
Mileage: 36-38 normal, 42-46 on the freeway. I got 47 mpg on a road trip this spring doing 60 mph. This is with a Speedohealer (again, courtesy of Street n Track) and it dialed in DEAD ON for speed. (A nice sheriff lazered me several times while I dialed it in until it was PERFECT
).
RPMS: It turns 4K rpms at 63 mph.
It does tend to want to wheelie a bit in 1st and 2nd, but the right wrist controls that. Like I said, for under a couple hundred bucks, it is THE BEST mod you can do AND calibrate your speedo error while you're at it.
Just PM Street n Track... he had it to me in 2 days!
I was hesitant to go both front and rear because I thought my mileage would suffer and it would be turning high revs on road trips.
Mileage: 36-38 normal, 42-46 on the freeway. I got 47 mpg on a road trip this spring doing 60 mph. This is with a Speedohealer (again, courtesy of Street n Track) and it dialed in DEAD ON for speed. (A nice sheriff lazered me several times while I dialed it in until it was PERFECT
RPMS: It turns 4K rpms at 63 mph.
It does tend to want to wheelie a bit in 1st and 2nd, but the right wrist controls that. Like I said, for under a couple hundred bucks, it is THE BEST mod you can do AND calibrate your speedo error while you're at it.
Just PM Street n Track... he had it to me in 2 days!
fast1200gp
Registered
did u have to change chain with 16/42 combo?
fast1200gp
Registered
so going from stock gearing to the 16/42 what will i expect? what will top speed loss be if any? low end? and milage? etc etc,,,what sprockets do u recommend(brand)? thanks for the help guys?
SpeedGeek
Never Forgotten
Didn't you read my previous post? Most of your questions are already answered.
My top speed dropped to about 173-175 ish... plenty fast for the street. 1st gear is a wheelie in the making. 2nd gear pulls OMG hard. etc etc through the gears.
5th gear redlines at 165 mph... tested it on the dyno last weekend.
Just PM Street n Track. He will hook you up better than you'll find anywhere else. (No I don't get paid to promote him... I'm just one VERY satisfied customer)
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