Sprocket size

[dig dug mx6]

Ok I am switching to a Katana rear wheel that came with a 530 sprocket which is great for me since its one less part I need. THe question I have is that its a 27 tooth and mine is currently a 26. I am assuming that this will not make a big difference, but I could be wrong. Either way I will either need a new chain or a different sprocket.

BTW I need some late model Katana parts. http://www.thegsresources.com/_forum...097#post376097

[lhanscom]

First, a 27 tooth rear sprocket sounds really small, I think the 700 comes stock with a 45 tooth rear. Second, a 1 tooth difference won't make a noticable difference. Third, if the sprocket is brand new, you could just get a chain, but if it has any miles on it, buy both chain and sprockets, or your chain will wear out fast.

[Billy Ricks]

You'll need to drop down to at least a 42 on the rear or up to a 15 on front. The smaller diameter radial will change the overall gearing quite a bit. I run a 16 front and a 42 rear.

[dig dug mx6]

First, a 27 tooth rear sprocket sounds really small, I think the 700 comes stock with a 45 tooth rear.

Yah I'm stupid. It has a 45 stock and the one on the new wheel is a 46. I don't know the age of the new sprocket and my chain is older so I will probably do both.

The smaller diameter radial will change the overall gearing quite a bit.

120/90-17 to 140/80-17 The diameter isn't different or am I missing something.

[Billy Ricks]

If you're going bias then don't be as radical, maybe just use a 15 up front. You can find radials to fit that wheel in a 140 width.