Originally Posted by
Baby Puke
Jeez I hope not. I rode one for a kilo *once* and the difference seemed much more marginal than that. I'm hoping this tests justifies my inability to afford to buy a front disc!
Roughly about 1s per km, but that's at a sustained speed. For a SS race, like the kilo or 500, it will be less, as you spend a considerable part of the race getting up to speed, where the aero benefit will be lower. In a Kilo, it will be finding the balance between weight and cda with a front wheel.
If you can find a front disc that is as light as a spoked deep dish or a foil wheel, and is stiff ENOUGH, that would be your holy grail.
My personal opitnion for a front wheel would be a trispoke if it's sufficiently stiff for your needs. Barring that, a deep dish wheel with lower spoke count, although it would probably be just as fast as the trispoke. For a heavier guy like me, I would steer clear from the original trispoke (HED, Specialized) as i found them flexy, especially on steeper tracks.