What's your favourite gear ratio?

no ignoring anyone, just don't really understand much about the ratios etc.

Examine your road bike, find what you use the most, get the same for the fixed. Job done.

47x16 will do it.

That'll give you the speed your after.

i like that, was thinking something similar

Examine your road bike, find what you use the most, get the same for the fixed. Job done.

Wrong length cranks (probably).

no I wasn't trying to be a dick, just mean, sometimes it's best to just trial and error, especially with something as cheap as cogs.

Doesn't make that much difference - he's going to be moving between a few gear choices on the road bike anyway.

new bike is 175mm crank, how much does the crank length affect the speed?

http://www.sheldonbrown.com/gears/

You can choose speed@RPM here. I'd not noticed that before.

fair point Malaysian

new bike is 175mm crank, how much does the crank length affect the speed?

Yes! Just a 1mm can give you an extra 5mph as soon as it is installed on the bike.

so 47x16 or 47x17

are you kidding?! one mm in what way, lengthening or shortening?

1mm on your cock

Yes! Just a 1mm can give you an extra 5mph as soon as it is installed on the bike.

That's cock implants. We're talking about cogs.

Ahhh - I thought the saddle felt different

i do have another question... i keep reading about different speed chains 8speed, 9speed. what affect do they have?

or effect?

this isn't an english lesson

Take a guess...
(and, yes, it is)

I'm out.

:)

i do have another question... i keep reading about different speed chains 8speed, 9speed. what affect do they have?

What's the question?

Is it "what chain do I need"?

more, what is the difference between chains and the resultant effect*

erm, one is able to move over more cogs