actually two stanchions work better because a bicycle only weighs 25 pounds. if you divide that by two and distribute the weight twice you provide a wider distribution area to handle the lateral forces on the load bearing axle, and you get better response and more control. Plus the finer adjustment of two stanchions instead if one moves at less the force and the bottom of the two stanchions intersepts the forces of motion from the ground to the working part of the suspension fastest with more actuation capabilities by transmitting shock through the rim first.