chain&sprocket

[I<3My750]

i was wondering what cain and sprocket ratio to put on my bike, i am new to this anyone wan to inform me in what i should use and what the outcome would be

[MHarrisEP]

Do you not like stock? What kind of result do you want?

-1 tooth in the front and +2 teeth in the back is popular, provides an acceleration gain.


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[TAgsxr1k]

-1 front +2rear works nice for a little more drive and snap but needs a speedo healer to fix speedo. It reduces top speed though. Mileage will suffer a bit.

[SVS]

It has been discussed about a billion times on here, the search button is your friend.

Also, if you want advice, you need to give more information. What's your goal? More acceleration, better fuel mileage or what?

[davidhar]

You need -8 / +17. That's how all the cool stunters roll, so it's got to be good.

Or +6 / -8 so you can hit 300 mph.

[SVS]

Originally Posted by davidhar

You need -8 / +17. That's how all the cool stunters roll, so it's got to be good.

Or +6 / -8 so you can hit 300 mph.

Legit point!

[I<3My750]

im looking to gain a little bit more highspeed without loosing so much acceleration

[Moto_Joe]

You won't gain high-speed. The bike is horsepower limited. Meaning it will likely run out of HP to push through the air before it runs out of rev/gearing.

[Moto_Joe]

And where is it you ride that you are needing more mph out of a bike capable of about 170-180mph real speed?

[davidhar]

Maybe one tooth lower on the rear? . Power is the real limiter from top speed, not so much gearing. A 600 loses no top speed with +1 or 2 on the rear, since its top speed is when power runs out. Your 750 has a touch more grunt though, so it may work. Is 140+ mph really not enough?

[meducky]

stock gearing and ad a nitrous kit, once you reach terminal speed just hit the button

[james1300]

Originally Posted by TAgsxr1k

-1 front +2rear works nice for a little more drive and snap but needs a speedo healer to fix speedo. It reduces top speed though. Mileage will suffer a bit.

I have been very happy with this Combo. (but, I gear'd mine for the street. Where I live)
You cant't pull to redline in top gear now. How do you plan to go faster? Is this a street bike?

[MotoMummy]

As Joe said, you can't gain any more top speed without more power (lots more). You would need a nitrous or turbo. It's not a gearing issue, but a power issue. If you really want more top speed the easiest and most cost effective way is to just upgrade to a 1000cc bike.

[ajsenol]

If you want to study this, go to this site - it gives you your default out-of-the-box setup by year and model. It shows you what will happen when you start changing things on those sprockets. It is very accurate!

www.gearingcommander.com

[Moto_Joe]

Originally Posted by ajsenol

If you want to study this, go to this site - it gives you your default out-of-the-box setup by year and model. It shows you what will happen when you start changing things on those sprockets. It is very accurate!

www.gearingcommander.com

Not as accurate as you may think. Not unless you are very very careful about parameters. Things like tire diameter, rev limit, etc make a huge difference.

It is good but too many people aren't smart enough to take it for what it is.... math. Math requires all the input numbers to be accurate... shit in=shit out.

[-JK750-]

Originally Posted by Moto_Joe

Not as accurate as you may think. Not unless you are very very careful about parameters. Things like tire diameter, rev limit, etc make a huge difference.

It is good but too many people aren't smart enough to take it for what it is.... math. Math requires all the input numbers to be accurate... shit in=shit out.

You don't have much faith in people.

If you manage to put the simple stuff there, it really is pretty accurate.
At higher speeds you get some tire slippage, but at least up to 250 km/h it was dead on for my bike.

[Moto_Joe]

Originally Posted by -JK750-

You don't have much faith in people.

If you manage to put the simple stuff there, it really is pretty accurate.
At higher speeds you get some tire slippage, but at least up to 250 km/h it was dead on for my bike.

Check your theoretical top speeds, rpm, and how it changes with changes in tire size.. example 180/55 is stock but put a 180/60 on it .

A lot of it is just theoretical at the top. And tire sizes wvwm with wear or brand to brand change a lot

[SVS]

Originally Posted by Moto_Joe

And tire sizes wvwm with wear or brand to brand change a lot

And with tire pressure - plus at high speed the centripetal force will increase tire diameter enough to make a difference.

[-JK750-]

Originally Posted by Moto_Joe

Check your theoretical top speeds, rpm, and how it changes with changes in tire size.. example 180/55 is stock but put a 180/60 on it .

A lot of it is just theoretical at the top. And tire sizes wvwm with wear or brand to brand change a lot

True, but for Supercorsa SC2 180/55 -1/+4 gearing at the limiter, it was just correct (GPS and speedohealer).

I think they advertise that new Dunlops are pretty stable, but some tires have big differences at different speeds.

Dunlop

virtually no circumferential tire growth

[djjdnap]

-1, +2 is the way i bought my bike, went to do the mod and low and behold i had the same sprocket smh.

So its not very aggressive in my opinion, but i do weigh 240lbs
Can barely clutch it up in 2cd and ppl said -1, +2 was a shore shot ijs,

but ur bike is lighter and im sure u are too so it might work for u