How to adjust the seat height of a mountain bike

Sit in the car. Put your foot on the pedal, put the pedal to the lowest position, and dry the foot in a slightly curved shape, not very curved, and you're good to go.

The possibility of being tired may not be a matter of height, if you adjust the height to about the same height as your hips! This position should be the distance from your saddle to the stem and the position of your arm plus a punch is the best you can try!

How to adjust the height of the saddle of the bike:

Heel method

This is a very common and simple way to do this, when you sit in the saddle, put your heels on the pedals and adjust the height of the saddle so that your legs are vertical to the pedals, and see if they are level with your hip bones at the lowest point.

However, this method is not scientifically proven and often leads to a low saddle. Professor Will Pelever of Mississippi Women's University, who has published several articles comparing various adjustment methods, said: "The main problem with this method (the heel method) is that it does not take into account the differences in the physiology of each person, such as the length of the thigh, calf and foot plate.

Mountain bikes can be adjusted to suit the racing model when riding on climbs and gentle sections. However, when going down the hill or rushing uphill, the saddle must be lowered, which is conducive to the center of gravity can be moved back at any time, and the car can be better controlled when encountering a drop. Some riders don't really care about this problem, and many times try to raise the saddle as much as possible in order to be cool, the higher the better, in order to look good on the ride.

Resulting in unstable riding and even injury.

109% method

A better approach was proposed by Hamley and Thomas in 1967 when they experimented with a variety of different saddle heights and decided that the ideal saddle height would be the inseam length (the length from the perineum to the sole of the foot or the length from the top of the axle of the pedal to the highest position of the saddle) of 109. Through various practices, this method has been widely welcomed and affirmed by the top coaches in the industry.

Homs Law

The original purpose of this method was to reduce overstrain injuries during cycling. The Holmes method is very different from the above three methods, and it is necessary to use a protractor, which is used to measure the angle between the knee and the lowest position of the pedal (as shown in the figure).

Holmes recommends this angle between 25 and 35 degrees, and the closer to 25 degrees the better it is for those older injuries (patellar tendonitis). However, this method may be too technical, and it is usually best to choose the above INSEAM method.

Pay attention to things: the adjustment of the saddle height is very important in riding and directly affects the quality of the rider's ride. If it is too high, the leg will be stretched too straight and completely tense when the foot is on the bottom end, which will cause too much tension on the knee joint. If it is too low, when the foot is on the top, the knee joint is very tight, resulting in knee joint injury and pain, the knee joint is a complex joint, local blood circulation is poor, once the injury is difficult to heal on its own.

1. Loosen the inner hexagonal screw under the seatpost, you can adjust the angle of the seat, and then tighten the hexagonal screw after adjustment.

2. Then do the last try, ride for a distance to see if it will be diaphragm lower body, and then adjust it according to comfort. In general, the front end of the saddle is slightly lower than the rear end.

Second, the steps to adjust the height:

1. Relax the seatpost clamp, clamp the saddle with your armpits, stretch out your arm and use your middle finger to touch the pivot position of the center axis (the axis point of the crank), at this time, you should pay attention to a point, try to relax the arm, in a natural drooping state, this method is to use the proportion of the human body to do the measurement, everyone's arm length is different, you can adjust it finely.

2. After adjusting the height according to the first method, find a pedaling point to ride on the bike, touch the pedal surface with the forefoot, put the pedal to the 3 o'clock direction (horizontal state of the early rubber bridge) when the knee and the pedal are in a perpendicular state, and the leg extension angle should be kept at about 170° when the pedal is stepped on the bottom. Follow this method to fine-tune your saddle height by 3-5mm each time.

The front and rear of the mountain bike saddle are adjusted according to the front and rear position of the saddle.

1. The setting of the front and rear positions of the cushion is actually quite simple: first sit on the cushion, put the soles of the feet on the pedal in the correct position and then step on it a few times, and then put the pedal horizontally, which is the vertical line of the front foot "knee which orange lower point" hangs down to just pass through the center of the pedal (that is, the pedal axis), so that it is completed. If the perpendicular line does not pass through the center of the pedals, adjust the position of the saddle in turn.

2. The position of the cushion is too forward, and the position of the cushion is too far in front or behind will affect the stepping force of the legs, and it is also closely related to the wear and tear of the knees, so it is not to be careful.

3. The most common mistake made by the average rider is to put the cushion too behind, which seems to make the car look more handsome and cooler, and it seems that it is easier to have that solid pedaling feeling, but the result of such hard operation will actually damage the knee in the long run.

1. Open the quick releaseTo start the rough adjustment, place the seatpost quick-release wrench.

Loosen halfway. <>

2. Pull up the seatCarefully pull up the seat with the armpits.

Clamp the seat cushion. <>

3. Align the sprocketAt the same time, the hands are straight down, and the tips of the middle finger can be aimed at the center of the upper winding wheel.

4. Tighten and release quicklyTighten the quick-release wrench and locate the support wall.

5. Sit on the seatSit on the seat and place one heel.

Place on the pedals.

6. Fine-tune according to your feelingsWhen stepping on the bottom, the knees should be basically straight, and fine-tune according to your feelings.

1. First find the quick-release hoop under the saddle and break it in the opposite direction, because when the quick-release hoop is locked, it is buckled and needs to be opened first.

2. Rotate the quick release hoop, you can feel that the screws are slowly loosening. The screws should be loosened as large as possible before they can be adjusted.

3. Break it with your hand to see if the saddle can rotate, and continue to loosen if it can't rotate. Then turn the seatpost up or down, as needed.

4. Hold the saddle with one hand to prevent the seat tube from running, adjust the quick-release hoop with the other hand, and then rotate it in a clockwise direction until it is locked.

5. Check whether the saddle is fixed with the seat tube, whether it will continue to rotate, if it will still rotate, adjust it, continue to lock, and then buckle.

6. Check the screws at the connection between the saddle and the seat tube, if the screws are loose, you can use a wrench to lock them. The locking effect can prevent the saddle from falling off during riding.