Opendro's World

Time Trial is all about being aerodynamic. You can read elsewhere on drag co-efficient and drag resistance and why it is the single most important factor in anything in a stream of air or water. Rolling resistance is just too small a factor at higher speed. You can also read elsewhere why we need to maintain various body angles - at knee, at hip flexor, at shoulder and elbows - to be effective and comfortable. Here, my attempt is to come up with a quick TT bike setup where we can start as a base. This setup does not require any equipment or second person. All we need is a set of allen keys and a linear scale. Crank Arm Length It must be noted that having longer crank arm is detrimental to the aerodynamic position as it would force the seat to be lower to be able to reach the bottom stroke and at the same time, the knee would need to bend further at the upper stroke causing very close angle between thigh and abdomen (hip extension angle) when trying to be in aerodynamic position