Differences on fewer or more sprocket teeth

Just been grabbing a few new parts from wemoto.com (very useful site for direct replacement parts for your exact bike) and i noticed in the sprocket section theire is a list:
Front Sprocket:
Standard
Less 1 tooth
Less 2 teeth
Plus 1 tooth
Plus 2 teeth

Rear Sprocket:
Standard
Plus 1 tooth
Plus 2 teeth
Plus 3 teeth

What is the general difference in adding or removing a tooth?
And what would be an adverage ratio (for tweeking purposes)

Originally Posted by Nosfertau

Just been grabbing a few new parts from wemoto.com (very useful site for direct replacement parts for your exact bike) and i noticed in the sprocket section theire is a list:
Front Sprocket:
Standard
Less 1 tooth
Less 2 teeth
Plus 1 tooth
Plus 2 teeth

Rear Sprocket:
Standard
Plus 1 tooth
Plus 2 teeth
Plus 3 teeth

What is the general difference in adding or removing a tooth?
And what would be an adverage ratio (for tweeking purposes)

Most folk tend to go either 1 or 2 teeth up on the rear sprocket. I would recommend it, it improves acceleration and response and doesn't affect top speed because the SV does not rev out in top gear anyway, not that I have ever tried to hit top speed since mine was done. 120mph is a silly enough speed for me without trying to get to 135. The only negative is that on the motorway at a given speed, the bike rev's a bit more and
you sometimes find yourself trying to change into 6th gear when you are already there, and you use a little bit more fuel, but you get used to being at higher revs when on a high speed cruise, and you get used to it.

Ace, well thankyou for that -Ralph-, i'll be ordering a new sprocket then, could do with a little better acceleration. feel sometimes im just not going anywhere lol Cheers again.

I was wondering the same thing.

So more teeth on back sprocket = more acceleration, more front teeth on front sprocket = ?

[yorkie_chris]

gearingcommander.com to see differences in rpm at given speeds

Nice site

Originally Posted by hongman

I was wondering the same thing.

So more teeth on back sprocket = more acceleration, more front teeth on front sprocket = ?

More teeth on back or less teeth on front = lower gearing and better acceleration

Less teeth on back or more teeth on front = higher gearing

Higher gearing may be beneficial if you are looking to reduce revs for a more relaxed cruising speed (and possibly better economy but this would depend on the bike) but on an SV it would not increase top speed as it cannot rev to the limiter in top gear. Power is the limitation, not the gearing.

On a bike that can rev to the limiter you would increase or decrease top speed, until your gearing gets so high that the bike doesn't have the power to pull to the limiter any more.

I've never heard of someone using higher gearing on an SV and I don't know why you'd want to do it.

[DarrenSV650S]

You never had meccano when you were a kid did you

Going down one tooth on the front is the same as going up about 2.5 teeth at the rear and Vise Versa.

The original gearing on my 600 gixer is 16/45. I'm presently running 15/47 and it'll wheelie on the throttle in first second and third.

For the next race I'm running 14/47 and may just struggle to keep the front on the tarmac at all :O)

Unless you have a speedo thats geared from the front wheel, changing the sprockets will make the speedo read wrong.


C

I just changed my front Sprocket for a 14 tooth one. Change isn't as drastic as I had hoped for.

So now going up 3 on the Rear. Will let you know the results. I'll be running 14/48 in the end. Standard 15/45.

I have been told that I will need to replace the chain for one with an extra 2 links(112).

Hopefully my bike will be as wheelie happy as Berlin's