1. The seat cushion is used to "sit", not "to lean on"
When the waist angle is low, the legs bear most of the body's weight, as well as cushion the shock impact, we are floating on the seat cushion, which is what most people call "leaning". In most cases, the weight of the body is mainly borne by the seat cushion, so this requires a soft and flexible silicone seat cushion. We are more "sitting" on the seat cushion instead of "leaning on".
2. To avoid compressing the perineum, tilt the
seat cushion forward.
When the seat cushion is tilted forward, the seat bones will slide down, and the sitting posture will be unstable. At this time, you need to push your body back with force, just like squeezing your body in the middle of the frame. Long-term riding like this will cause damage to your opponents and shoulders. This sitting position reduces the contact surface between the sitting bones and the seat cushion, and increases the pressure, which is more likely to cause butt pain. In addition, once the center of gravity needs to be changed, when going downhill, the seat bones slide down, the body is forward, and the hands are propped back, which will inhibit the movement of hip rotation, which is not conducive to manipulation, and affects the pedaling of the legs. The correct way is to level the seat cushion first, and then according to your riding feeling, lean forward or backward slightly to find the seat cushion angle that suits you.
3. Moderately soft and hard silicone cushion is better.