Bicycle Stem Length Choices

Bicycle stems are commonly known as bicycle faucets, and the flexibility of control is directly related to the height and length of the stem. The stem and frame work together to make up the total top tube length. Note that the length is not necessarily equal to "the TT value of the top tube of the frame + the length of the stem", because the stem has an angle, and the front and back installation will lead to different heights, which will affect the entire length of the top tube, and actually need to be measured to obtain .

After the frame is determined, the total top tube length should be the most important parameter in the size. What is the appropriate length for this? On the one hand it depends on your body size and on the other hand on how it is used.

First of all, it can't be too short, to ensure that the upper body can be stretched perfectly, without the feeling of shrinking into a ball; to ensure that the handlebars and your knees have a certain safe distance, even when standing and pedaling, the knees will not hit the handlebars.

Second, look at how to use it. The longer the total top tube, the more stretched the upper body is, and the easier it is to exert force, but the problem is that the center of gravity moves forward and the handling performance decreases. Conversely, with a shorter top tube, you'll be able to straighten your upper body and get good handling and visibility, but of course it's less powerful. In addition to the horizontal length, the vertical difference in the height of the stem and seat also plays a role. The seat height is relatively easy to determine, and the stem can be adjusted for the height difference with the seat by using the fork grommets, or even reverse mounting. The lower the stem, the easier it is to exert force, the less controllable it is, and the more pressure it puts on the neck and arms; the opposite is true.