Form Follows Function: Height and Form
Besides the size of the platform, height also plays an important role. In recent years, flat pedals have become increasingly flat. Models like the OneUp Components aluminium pedals are only 12 millimetres high. The advantage is that you stand with your foot closer to the pivot axis and run less risk of the pedal "rolling away" under your foot. Of course, a flat pedal also brings more ground clearance on demanding terrain. Many pedals are also concave, where the platform is thinner in the middle than at the edges, and your foot rests more "in" the pedal than just on top of it. However, one should look carefully, as it is not the platform alone that is the decisive factor. Some have a flat platform or are slightly thicker where the axle and bearing are, but ride through placement and length of the pins as if they were concave. Making the platform thinner on the outside than in the middle of the pedal gives you ground clearance. How open the pedal body is designed plays a big role in stability, and how well the pedal performs in muddy conditions. The more open, the less it will clog. The edges of the pedal body also play a role off-road – a bevelled front edge helps to avoid getting caught in contact with the ground.