11t Fixed Cogs And Below?

[eskimo]

Are they made/ available?

I know freehubs can get lower but i think the smallest possible was 11t?

Any info, anybody?

Thanks.

[AdamR28]

Screw on? It's not possible with standard hubs as the thread size is too large for 11T... would work with M30x1 I reckon but never seen one available

[eskimo]

Screw on? It's not possible with standard hubs as the thread size is too large for 11T... would work with M30x1 I reckon but never seen one available

I know the normal hubs now are 12t only but i've seen smaller threads before. I just wondered, it would be cool though.

[walker]

i dont see a need for it. if you want a higher ratio, there are 20T freewheels available.

[Adam-Griffin]

i dont see a need for it. if you want a higher ratio, there are 20T freewheels available.

Is there ? other than a tensile i wasn't aware of any

edit: Just re-read it, thought you said 22t

Edited April 6, 2008 by Adam-Griffin

[Mark W]

You can get Eno freewheels up to 22 or 24t, although that may only be the 36ep version.

[psycholist]

I think it's the Alfine groupset from Shimano that has a 9 tooth sprocket at the back.. It's designed for folding bikes, so trials is pretty much guaranteed to snap it. There are some BMX drivetrains with 9T sprockets too AFAIK, again I'm not too sure they're strong enough for trials, but they might be. It's always better to go with the biggest sprockets you can as this takes a lot of stress off your chain (More teeth means load is transferred by more rollers, bigger sprockets means less tension for a given crank force)... The only reason to go with small sprockets is to save weight, and saving weight at the expense of a chain that's more likely to fail probably isn't all that wise...

[Dan6061]

9t bmx ones are probably a fixed driver though, so the cog is part of the driver.

Guessing it'd be the same for the roadies too?