The height adjustment method of the hardtail mountain bicycle seat:
1. The seat tube clamp relaxed, with their armpits clamped seat, extend the arm with the middle finger to touch the axle shaft position (crank axis point), this time to pay attention to a point, try to relax the arm, in a natural drooping state, this method is the use of human proportions to do the measurement, but this method may not be able to do accurate, after all, everyone's arm length are different, we can then fine adjustment.
2. In accordance with the first method to adjust the height, find a pedal point riding in the car, with the forefoot contact pedal surface, the pedal to the 3-point orientation (horizontal state) when the knee should be vertical with the pedal, the pedal to the end of the leg extension angle should be maintained at about 170 °. This is the easiest way to fine-tune the height of your seat, keeping the adjustment range at 3-5mm each time. this method may not be very accurate, but the deviation is not too big.
This is also a reference way to adjust the seat height when I initially ride, when there is a certain riding experience for the seat height is easy to grasp.
1. The seat bag should be flat, the seat bag forward may let you ride better power but will cause the center of gravity can not focus on the seat bag again thus increasing the force on the knee.

2. Adjusted, riding process, the foot in the lowest position when the leg should not be greater bending more can not be completely straight, otherwise the damage to the knee is great.





