I am fitting a new chainring to my fixed. I will therefore need a new chain which I have purchased. The bike has track ends and my question is this; where in the dropouts is the axle best located?
Also, is the chain best having a little slack? If so, how much up and down movement is recommended?
I've always assumed/guessed that somewhere in the middle of the dropouts is good - you don't want a chain so short that the wheel has to be in the forward part of the dropout as you'll never get it in/out!
Regarding tension, my rule of thumb is to get it as tight as possible without binding. That will give a bit of up and down play, perhaps half an inch, when you press on the chain - it definitely shouldn't droop!