sprockets
- Thread starter big ed
- Start date
you want it to wheelie easier ? run a 17/42 or 17/43
you want it to stay up with the smaller bikes in the 1/8 then run something like a
16/43 or 16/42
there's a lot of good stuff about sprockets on here.
you want it to stay up with the smaller bikes in the 1/8 then run something like a
16/43 or 16/42
there's a lot of good stuff about sprockets on here.
i would go with the 16/43 to take them out in the short runs. but you will lose on the top end. i think you would be around the 175 mph range with this setup. maybe a little higher with a tre installed.
cougar694u
Registered
Easiest thing is to go -1 on the front (16-tooth). You don't have to lengthen your chain, because the front sprocket is smaller. I wouldn't go any smaller than that because it changes the ramp angle of the chain and can wear it prematurely. That, and it might rub a little more since the diameter is smaller. Going to a 16 on the front is similar to going to a 42.5 on the rear (obviously not an option), so most people use either a 42 or a 43.
17/40 (stock gearing), you're at 2.35:1 gearing
17/42 (+2 rear), 2.47:1 gearing
16/40 (-1 front), 2.50:1 gearing
17/43 (+3 rear), 2.53:1 gearing
That's only about a 6% change, so it won't throw your speedo off too much, and you will notice a gain. Then, when that gets old, go to a 42/43 on the rear.
Since the rear sprocket will be getting larger, chances are you'll need a longer chain to support it.
16/42 = 2.625:1 gearing
16/43 = 2.688:1 gearing
The difference between the two is less than 3%, so it's a matter of price and availability (or personal preference).
If you choose to go with the 16/43 gearing (that's what I've got), you'll scream on the freeway like you're in 5th gear because it changed the gearing by almost 14.4%. You'll be at around 160 MPH at 10,200 RPM in 6th gear.
I've ran it at the track (road course, not drag), and didn't have much of a problem with it wheelying. Yes, it would come up, but it wasn't like it was gonna buck me off or anything. Once you get used to it, you'll keep the front from coming up more than an inch or two.
17/40 (stock gearing), you're at 2.35:1 gearing
17/42 (+2 rear), 2.47:1 gearing
16/40 (-1 front), 2.50:1 gearing
17/43 (+3 rear), 2.53:1 gearing
That's only about a 6% change, so it won't throw your speedo off too much, and you will notice a gain. Then, when that gets old, go to a 42/43 on the rear.
Since the rear sprocket will be getting larger, chances are you'll need a longer chain to support it.
16/42 = 2.625:1 gearing
16/43 = 2.688:1 gearing
The difference between the two is less than 3%, so it's a matter of price and availability (or personal preference).
If you choose to go with the 16/43 gearing (that's what I've got), you'll scream on the freeway like you're in 5th gear because it changed the gearing by almost 14.4%. You'll be at around 160 MPH at 10,200 RPM in 6th gear.
I've ran it at the track (road course, not drag), and didn't have much of a problem with it wheelying. Yes, it would come up, but it wasn't like it was gonna buck me off or anything. Once you get used to it, you'll keep the front from coming up more than an inch or two.
18/44-45
You KNOW!!!!!!!!!(BA BUSA @ Jan. 02 2007,02:08)NICE COMBO
For a TURBO
with the big bore and NOS I thought that 18/38 would be good for top end. 18/43for everyday (smaking BAbusa's a$$) would be right.(BA BUSA @ Jan. 01 2007,12:14) I'm working on doing a Big Bore and a Wet shot
Thinking bout 18-19 front 43-45 rear
