Test Principle:

This test simulates the forces acting on a bicycle during real riding conditions across various road surfaces. Under different riding scenarios, the wheels are subjected to external forces in both forward and backward directions. These forces are transmitted through the front fork to the head tube, causing the head tube to continuously withstand repeated external loads.

At the same time, the rider’s body weight exerts a downward force on the saddle, which is transferred through the seat tube to the bicycle frame. This effect becomes even more significant when riding on rough or uneven roads, where the frame experiences larger and more frequent loads.

Therefore, the quality and structural integrity of the frame are critical factors that directly affect the bicycle’s safety, durability, and overall riding performance.