Most of the cheap electric bicycles have shock absorption at the front and rear.

Why are many common mountain bikes not designed with shock absorption?

For mountain bikes, the main function of the rear shock is to keep the rear wheel in contact with the ground.

If you ride a hard tail down the mountain, you will obviously feel that the rear wheel brake is difficult to operate, because every time you encounter a big bump, the rear wheel is easy to fly up, and the rear wheel brake will lose its effect. Therefore, all models that need to bump down the mountain, DH, all mountain, trail, are mainly soft tails, and even many of the current XC champion bikes have certain rear shocks.

Therefore, for models without this requirement, without rear shock absorbers can simplify the design, reduce weight, reduce costs, and reduce the energy wasted by the shock absorber when the rider pedals.

Moreover, although the hardtail only has a front fork, it can still absorb large shocks as a whole. You can feel this principle when you step down on the pedals. Hardtails have their own charm, they are lighter, more efficient on hills, you need to be more precise, and the feedback from the rear wheel is better, and the pump and jump feel better (so dirty jumps are hardtails).

There is a cheap replacement for the rear shock absorption of mountain bikes – stand up, the feet that bear hundreds of kilograms of pressure every day and strong leg muscle shock absorption can ensure that the rear wheel shock will not cause damage to the human body; and long-term commitment to fine work. The hands and upper limbs are relatively fragile, so the front shock is very important. The core of the design of the shock absorber on a mountain bike is not for comfort, but to cope with the ups and downs and bumps of the road surface, keep the wheels as close to the ground as possible, resolve the momentum interference in the vertical direction, and maintain the best energy output effect.

There are many mountain bikes with rear shock absorbers, but most of the mountain bikes that press the road are single shock absorbers. The main reason for adding shock absorption to electric bicycles is that the vehicle is heavy, and it is best to have shock absorbers to buffer and absorb road bumps. Electric bicycles are the bikes with the most stringent cost restrictions. It is difficult to use high-level shock absorption, but it is better than nothing, and due to the large body mass, the shock absorption effect is obvious.

Shock absorption comes at a price. Aside from the cost, one more rear shock absorber also consumes more power. For E-bikes, the weight and power consumption are a little higher, which is acceptable; for a manpower bike, the weight is several hundred or even a few kilograms higher, and the extra power will consume more energy, which is not acceptable to users.

The main thing in the design of the bicycle is to ride lightly, not to be comfortable in the buttocks. If there are no special requirements, you will not think too much about shock absorption. Some mountain bikes do not design rear shock absorbers because every time you exert force on the mountain bike, it is directly when stepping down, except for a few special structures and some auto-locking rear shocks, most bikes will inevitably release force as long as they have rear shocks, so naturally, rear shocks are not designed on some mountain bikes.