Originally Posted by
RChung
Yes, you can feel the difference even at one bike length. However, Cycling Weekly understates "the benefit." We've measured drag reduction much farther than 20 meters. It's just that the benefit, although there, is too small to feel. How far? During hour record attempts on 250 meter velodromes, we've measured the rider drafting themselves. That's cuz even a straw can stir a bathtub.
I always wondered how riders could lap the field several times in a points race. Always thought they must have huge aerobic engines, which they probably do, but I imagine if use that knowledge correctly, it could be a big advantage. Especially on an 250 meter track.