Cycling Time Trial Aerodynamic Tips
have to produce to punch a hole through the wind. A headwind or head cross wind has a similar effect to going faster (although it's not as much fun): the resistance increases. That makes reducing aerodynamic drag more important because it saves watts (power).
This is where aerodynamics and training in wind tunnels and on velodromes pays off. Everyone in the peloton has a finely tuned time trial position, one that simultaneously maximizes the ability to produce power, minimizes aerodynamic drag, and optimizes comfort so the rider can stay in the optimal position for the duration of a time trial. That used to be enough, but in recent years we've realized that riders can make specific adjustments to their time trial positions on the fly and based on the Nike Air Max 90 Ultra Moire Black/Black/Whi
As the winds started to blow harder and harder off the Atlantic Ocean this afternoon, aerodynamics and position on the bike went from important to critical. The faster you go, the more air resistance you encounter, and the more power you Air Max 90 2016 Women's
above 350 watts (how much above depends on the wind speed and direction, among other factors). For the sake of round numbers, let's say the wind necessitates a 15 watt increase in power to maintain 30mph. You can obviously pedal harder to increase your output by 15 watts, but you may pay a heavy cost for that effort. If the increased power output puts you over your sustainable intensity level, fatigue before the finish will force you to slow down considerably.
An aero position used to be described as a thing, but now it's better described as a behavior. In the past, we used to put a rider in a position that looked best in the wind tunnel, meaning it resulted in the lowest drag numbers, and told him to stick with that position no matter what. That advice was based on the notion that this specific position was the optimal balance between power, drag, and comfort. But there are times when moving to a position that compromises one of these factors can be beneficial, which led to the idea of showing athletes how to change their positions based on the conditions of the race.
conditions to further optimize their aerodynamic advantages.
Tucking your chin down so your head sinks into the space between your shoulders is one of the techniques used to optimize aerodynamics when riding at very high speeds (downhills) or into headwinds. Lowering the head can lower drag numbers significantly. In our previous example, it may be enough to reduce the power necessary to ride at 30mph by those 15 watts. This "free speed" eliminates the need to increase power output, thus allowing the rider to sustain his effort longer before fatiguing. The trouble is that tucking the head compromises the rider's ability to see where he's going and can sometimes make breathing more difficult. And Nike Air Max 90 Suede Womens depending on the rider's flexibility, it can be uncomfortable as well. Moving forward or back in the saddle and moving hand positions can also impact drag for some riders, and on uphills the opposite techniques are often used moving to a more upright position which sacrifices aerodynamics but improves the ability to produce power.
If you it requires 350 watts to ride at 30mph in a time trial position, and you find yourself riding into a headwind, maintaining 30mph will require you to increase your power output to Nike Air Max 90 Leather All Black
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