gearing-17/42or43

(Tetge @ Sep. 27 2005 said:
(skater69 @ Sep. 27 2005 said:
Thx, Flrider.  I'm probably going to have the speed shop here do the work since they're just awesome at everything they do......they play w/Busa's every day practically.  How much are parts alone roughly?  Gonna probably get a new 530 chain too.
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You do not need a new chain if your current chain is OK.  It will fit the 41 or 42 and now we know that it will fit a 43 also.  Taking off the rear wheel is all that is required to change rear sprockets.  Remove the rear brake caliper (12mm socket) and remove the rear axle nut (36mm socket) and the wheel comes right out. You have to loosen the adjusters on both sides (10mm and 12mm open end wrenches).  The sprocket is held on by six 14mm nuts. When you take the sprocket holder off the wheel you can marvel at fact that the rubber cush things in the hub are already being derranged and eaten up by the Busa's torque.  I have changed the front sprocket twice and the rear sprockets many times in my search for the perfect gears.  The rear sprockets cost about $60 shipped and the fronts are $25 shipped, or so.  So gears are cheap if you change them yourself.  I recommend a SpeedoHealer to correct your speedo if you regear, since I really like mine, especially the top speed recall feature.
If you do not have a torque wrench, this would be a fine time to get one.  They are cheap at Harbor Freight and work well enough for changing a tire.
If you do this yourself, you will be prepared to change a tire or fix a flat or even adjust your chain.  And you can buy tools with the money you save. A 36mm socket for the rear wheel is a nice thing to have.  
It is interesting that Suzuki includes all the tools you need to change a rear tire in the tool kit (you have to be able to adjust your chain) but no 24mm hex to unscrew the front axle. So, you can not change your front tire on the road.  Of course, I guess they figure if you blow a front tire you will be dead?
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Awesome, Tetge! You know what? I WILL do it myself. I already have a torque wrench (got it at harbor freight) and all the bits required. Have already adjusted my chain too. Is getting the chain on the new sprocket fairly easy?
 
Goes on just as you take off. Tire is a little more forward than stock is all. Another speedometer correction device is a yellow box. I opted to install this instead of speedohealer. I like the way it was designed better. And I have a GPS for top speed so don't need the function of the speedohealer. Individual preference I think. But you should get one of the two to correct the speedometer.



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(flrider @ Sep. 27 2005 said:
Goes on just as you take off. Tire is a little more forward than stock is all. Another speedometer correction device is a yellow box. I opted to install this instead of speedohealer. I like the way it was designed better. And I have a GPS for top speed so don't need the function of the speedohealer.  Individual preference I think. But you should get one of the two to correct the speedometer.
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is the yellow box an easy install? Do you have a link to this product?
 
I had to cut and splice the yellow box wiring. I believe the speedohealer in plug and go now with Suzuki terminals. Don't think yellow box has them yet. Google will get you both web sites and retail sellers.
 
Skater, you might check your cush drive rubbers, and order some more while you're changing your sprocket. I don't know how many miles are on your bike, but you're already gonna be in there and they are pretty cheap.....
 
I went with the 42T on the rear (stock on the front 17t) and it did make a difference however I felt that it still needed a little more grunt, so I went with a 43, that made a bigger difference not so much going from 42 to 43 but going from stock to 43 you will feel it. Still have 170+ top end and allot better bottom end. Did not really feel a big hit for gas mileage, the on board computer claims 37 to 38mph which the way I ride I am happy with it. Sometimes I still think I could use some more gearing, and when the chain needs replace I will try a 44 and like all my posts I will tell you my honest opinion.
 
In connection with gears, how many RPM's do people use when cruising on the Busa? With +1 on the back of mine 4000 RPM indicated is 73 actual and 5000 RPM is 91 so I generally cruise between 4-5000 RPM when I hit the road. This is not far off from the RPM's of a stock bike as a comparison. The bike seems very relaxed and comfortable both with stock gears and the +1 on it. Even the 42T back was not too bad. But, by 16T/42T I felt that it was getting a bit buzzy. That 4-5K range became 67-84 MPH so the tach was hitting 5K and over here and there while just riding down the highway.
 
(vmaxbaby @ Sep. 28 2005 said:
I went with the 42T on the rear (stock on the front 17t) and it did make a difference however I felt that it still needed a little more grunt, so I went with a 43,  that made a bigger difference not so much going from 42 to 43 but going from stock to 43 you will feel it.  Still have 170+ top end and allot better bottom end.  Did not really feel a big hit for gas mileage, the on board computer claims 37 to 38mph which the way I ride I am happy with it.  Sometimes I still think I could use some more gearing, and when the chain needs replace I will try a 44 and like all my posts I will tell you my honest opinion.
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How does the bike cruise in 6th at 80-85 with the 42 on the rear? Is it lugging or are the rpms high enough that it's got decent punch?
 
(skater69 @ Sep. 28 2005 said:
(vmaxbaby @ Sep. 28 2005 said:
I went with the 42T on the rear (stock on the front 17t) and it did make a difference however I felt that it still needed a little more grunt, so I went with a 43,  that made a bigger difference not so much going from 42 to 43 but going from stock to 43 you will feel it.  Still have 170+ top end and allot better bottom end.  Did not really feel a big hit for gas mileage, the on board computer claims 37 to 38mph which the way I ride I am happy with it.  Sometimes I still think I could use some more gearing, and when the chain needs replace I will try a 44 and like all my posts I will tell you my honest opinion.
Click to expand...
How does the bike cruise in 6th at 80-85 with the 42 on the rear?  Is it lugging or are the rpms high enough that it's got decent punch?
Click to expand...
Now I really feel weak and slow. When my bike is running 80-85, even with the stock gears, it has more than decent punch in 6th. It is downright strong. And the shorter the gears, the stronger it becomes. If you want an idea what 6th would feel like with 16/41 gears, just put your bike with stock gearing into 5th. 5th is 8.9% shorter than 6th and 16/41 is also 8.9% shorter than stock. So 5th stock is identical overall to 6th with 16/41. 17/43 would be a bit taller than the stock 5th since that is only a 7.5% change.
 
we have steel rear sprockets for $35 and fronts for $16 and sale you a ek 530-112 ZVX chain chrome or gold for $135
 
I was told I would need a longer chain for the 44 rear, so this will happen in the winter, need to recover from the new rims and tires before I spend another dollar on this beast..
 
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