>>1830311Bicycle technology is more advanced than people realize.
For starters the frame, if you get a carbon fiber frame, well it's carbon fiber. If you get an aluminum frame the tubes should be butted, meaning of variable thickness and they are hydroformed. Meaning they had make special molds and they put a round aluminum tube in then blow it up like a balloon. The weird shapes are not for looks. They are computer engineered to be vertically compliant and laterally stiff. This vertical compliance makes it much better to ride and makes it stronger by allowing it to flex. Laterally, any movement is coming from your pedaling and wastes your limited energy. Chain stays and seat stays are the same. Then you have to put it in the wind tunnel. Because as a bicycle rider, you have very limited power and torque, wind resistance is huge. They design the head tube, bottom bracket and cable organization to minimize drag. On modern bikes the cables may even be routed inside the handle bars. Once you got the stiffness and flex right and the aerodynamics maximized you have to look at weight. The bike has to be as light as possible not just for acceleration but for climbing where every ounce can make a difference climbing hills. However, people jump bikes and do all sorts of things on them. So you have to adjust tube thickness and angles to make sure the strong points are strong enough. You'll have replaceable derailleur hangers. Then you have to ad in the bolt hook ups for the water bottles. That's just the frame. The fork is different. On a mountain bike, they are no less complex than a motorcycle, arguably more so because of the extreme lightness. On a road bike, they will be woven carbon fiber to deaden vibrations among other things. Then you have to make a light weight seat post with an attachment powerful enough to hold the seat and rider. The seat is a whole other issue, I paid over If your seat is not anatomically correct to you, the pressure..
