Evans Cycles
Evans Cycles

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Triathlon Bikes
 
 
 
 
A triathlon bike is designed to be ridden comfortably and efficiently whilst giving as much aerodynamic advantage as possible. Slight changes in geometry also help to ease the transition from cycling to running.

Opting for a triathlon bike over a standard road bike with tri bars offers several advantages. Installing aero handlebars on a standard road bike exerts two changes on a rider’s position: The rider’s upper torso is more stretched out with the hands and elbows farther forward, and the angle between the thigh area of the leg and the torso becomes more acute. There is less distance between the thigh and the torso at the top of the pedal stroke. With the thigh coming up towards the chest during the pedal stroke it’s possible to feel cramped. These two changes mean a road bike with aerobars becomes less comfortable. At the same time the increased distance from saddle to aerobars on a road bike usually makes the rider too stretched out for stable handling. It also alters your position so that the hamstring muscles and glutes can't contract as powerfully. To get the most from your body during this demanding event you need to have the right tool for the job.

The angle of the seat tube on a triathlon bike is typically 76-78 degrees. A typical road bike seat angle is 73-74 degrees. This steeper seat angle serves to open the distance between the thigh and the torso up, easing muscular tension in the legs and lower back and making breathing easier.

Triathlon bikes have tri-bars fitted as standard. Correctly fitted tri-bars support the weight of the upper body reducing the amount of muscular effort required helping to conserve energy. Aero handlebars allow the rider to sit lower on the bike and with a narrower, more aerodynamic upper body cross section.
 
This story was last updated on 18/01/2012