Looking for 23+ cog

I heard of 27t cogs, but anything bigger than 22 would make me a happy Polo player.

and must be odd ;)

Why not just go smaller on the front? a lot easier me thinks.

Standard mtb granny rings are 22 (front!) that paired up with your normal street rear cog should make a nice ratio.

Go down to HH on Sunday, bike jumblers in attendance with big sprockets in abundance...

^ There's a jumble this weekend?!? Damn my packed social calender, I have missed the last 2 :-(

Edit: Although thinking about it I should probably be sell stuff there not buying.

sjs do a cheapo 22 tooth....I just couldn't find a 24 tooth for my circus bike

object got a 23 tooth at the track day jumble, said they had 24t aswell

buy a 16 tooth cog and get hold of an old 22 tooth granny ring and try this out. http://www.63xc.com/jasom/grannycog.htm

my problem is that I need to keep a road ratio on the other side, so Ideally I'd keep my 44X15 on one side, and switch to 44X23 or 25 or 27 for polo

I have a 21if that helps le car :)

my problem is that I need to keep a road ratio on the other side, so Ideally I'd keep my 44X15 on one side, and switch to 44X23 or 25 or 27 for polo

wont you have to lengthen/shorten the chain each time?

I do, but that's fine, got 2 chains for that already

I've never had to change a rear cog before, what tools will I need? Does anyone have any links to decent tutorials?

lockring and chain whip