If you're training/racing, chances are that you're going to be pretty picky about your position on your bike(s). I'll disagree with hippy here: If you have different crank lengths, if you're serious about it, you'll notice the difference quite quickly. (For the same type of bike of course!)
It's the same thing with different bike shoes, cleats stacks, pedals thicknesses and even different thicknesses of padding in your shorts if you use those.
Also, select the length of your cranks carefully, track may require shorter cranks to be able to stand in the turns or something like this, but it can help also with opening your hip angle for better breathing. That said, the oposite might be true as well for other disciplines like pursuit where you don't need to trackstand.
But as cliveo put it: it's not just about the length of the crank, it has to work for the bike itself, and a good overall fitting will be a must do anyways.
If you're training/racing, chances are that you're going to be pretty picky about your position on your bike(s). I'll disagree with hippy here: If you have different crank lengths, if you're serious about it, you'll notice the difference quite quickly. (For the same type of bike of course!)
It's the same thing with different bike shoes, cleats stacks, pedals thicknesses and even different thicknesses of padding in your shorts if you use those.
Also, select the length of your cranks carefully, track may require shorter cranks to be able to stand in the turns or something like this, but it can help also with opening your hip angle for better breathing. That said, the oposite might be true as well for other disciplines like pursuit where you don't need to trackstand.
But as cliveo put it: it's not just about the length of the crank, it has to work for the bike itself, and a good overall fitting will be a must do anyways.