sprocket size





#1
I'd like to make my bike jump around a bit more through the gears. Being in miami, its hard to get the bike up to 180mph between traffic lights no matter how hard you are on the brakes. So,accelleration seems to be more of the game in my neigborhood. Can some one tell me how many teeth are on the stock sprockets? And what combo they are happy with drag racing?.............Thanks
 
#2
stock gearing on a busa is 17/38. I would go down one in the front for sure. If you're over 200lbs then I would put a 42 on the back. If under then put a 40 on the back. Hope that works out for you.....
 

BigBSBusa

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#3
Actually stock gearing is 17/40. Do a search for gearing and you'll see that some use 16/42 while others use 17/43 for the strip.
 

ranman

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#4
lovin 16/42 only down side is tires and gas mileage, but i did not buy it to save gas
 
#7
(launchmaster @ Sep. 10 2006,10:40) stock gearing on a busa is 17/38.  I would go down one in the front for sure.   If you're over 200lbs then I would put a 42 on the back. If under then put a 40 on the back. Hope that works out for you.....
i can't believe you thought stock was 17/38....

newb....
 

ranman

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#9
(Busa Dude @ Sep. 11 2006,16:19)
(ranman @ Sep. 10 2006,15:47) lovin 16/42 only down side is tires and gas mileage, but i did not buy it to save gas
Would you have to take a link out of the chain ?
perfict fit, with one down in the front +2 in the back no problems. got mine from charles at street and track.
beerchug.gif
 

MoosesBusa

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#13
1 down in the front is roughly equal to three up in the rear.
  I am one down in the front right now and love it for around town stuff. Being in Miami you will be hitting a lot of highways and toll roads that get up to highway speeds of around 70 mph. this gearing is fine for that. Your rpm's will be a little higher but it actually helps by removing the acceleration lag the Busa has at highway speeds. you'll see what i'm talking about once you do the front sprocket. Until you modify the gearing you don't realize ther IS lag in acceleration at highway speed! You'll also find you leave lights quicker with less effort allowing you to get in front of the traffic for better positioning without having to "launch" from the light.
I have a 44 tooth sprocket that goes on the rear for a day at the strip. NOT recommended for everyday driving when you're already down one up front!
 
#16
(gnd111 @ Sep. 10 2006,20:01)
(launchmaster @ Sep. 10 2006,10:40) stock gearing on a busa is 17/38.  I would go down one in the front for sure.   If you're over 200lbs then I would put a 42 on the back. If under then put a 40 on the back. Hope that works out for you.....
i can't believe you thought stock was 17/38....

newb....
Yeah, he really blew that one!
laugh.gif


It shocks me that some guys can open their pieholes to convey information as fact when they are actually just guessing.

As stated by several other knowledgeable guys, 17/40 is the stock gearing that Hayabusas arrive with and has been since the Hayabusa's inception back in 1999.
 

gaby

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#17
Ok, any 1/4 MILE difference between gearing?
anyone experience it.
I already run 10.7 at 2000ft with 16/42, I'll try 16/40 next week.
 

Red05

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#19
(Truckracer @ Sep. 23 2006,07:19)
(Red05 @ Sep. 10 2006,11:54) 3 or especially 4 would be huge. I went +2 (42) on the rear and it made quite a difference.
Can you use the stock chain length with a 42 or 43 tooth sprocket on the back?
Yeah, no problem. It "sucks" the rear wheel in, shortening the wheel base (3/8" with the 42T), but yes the stock chain length works fine.
 

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