Join Date: Aug 2007
Location: Northampton, MA
Bikes: Iron Monkey: a junkyard steel 26" slick-tired city bike. Grey Fox: A Trek 7x00 frame, painted, with everything built, from spokes up. Jet Jaguar: A 92 Cannondale R900 frame, powder coated matte black with red and aluminum highlights.
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A niggly thing: laminar flow at bicycle-like scales is difficult to achieve (you can scale a wing, but you can't scale the air), and in real-world applications like actual bicycles covered in actual humans with the wind going wherever, just about impossible. The dimpled surface is, like a golf ball, to make a turbulent (but thin) layer of air, called the "boundary layer", stick to the surface, rather than separating and making a thick, chaotic parachute of air. It's much easier to create and maintain that laminar flow.
Also, it's not that the rear wheel has more weight on it. It's that the leverage is totally against moving your entire body sideways, skidding the tire. On the front wheel, it only has to make the wheel pivot a little bit at the wrong moment to require dental work.
Unfortunately, most of the drag on a bike is from the front spokes, as they're going twice as fast through the air as the rest of the bike at the top of the wheel and nothing else has moved the air out of the way yet. That's why front wheels often have three or four wing-shaped spokes.