A draper header for a combine, the draper header comprising: a center section adapted for attachment to a combine and provided with a belt operable in a rearward direction for feeding crop material into the combine; first and second wings extending in opposite lateral directions from the center section, each of the first and second wings comprising a draper belt operable to feed crop material toward the center section, wherein the first and second wings are individually pivotably supported relative to the center section; and a cutterbar positioned at a forward edge of the draper header across the center section and the first and second wings, the cutterbar operable to reciprocate for cutting crop material from the ground, wherein the first and second wings are coupled to the center section by respective connection linkages and are furthermore supported relative to the center section by a respective resilient float element, each resilient float element operable to produce a force output that varies with a position of the wing with respect to the center section, characterized in that each resilient float element is coupled between the center section and the respective one of the first and second wings by a respective float linkage operable through a range of positions to vary a mechanical advantage between the resilient float element and the respective wing, and that the movement of the float linkage reduces the mechanical advantage as the force output in the corresponding resilient float element increases, and the movement of the float linkage increases the mechanical advantage as the force output in the corresponding resilient float element decreases so that change of an overall wing float force applied to the wing by the resilient float element is subdued. a center section adapted for attachment to a combine and provided with a belt operable in a rearward direction for feeding crop material into the combine; first and second wings extending in opposite lateral directions from the center section, each of the first and second wings comprising a draper belt operable to feed crop material toward the center section, wherein the first and second wings are individually pivotably supported relative to the center section; and a cutterbar positioned at a forward edge of the draper header across the center section and the first and second wings, the cutterbar operable to reciprocate for cutting crop material from the ground, wherein the first and second wings are coupled to the center section by respective connection linkages and are furthermore supported relative to the center section by a respective resilient float element, each resilient float element operable to produce a force output that varies with a position of the wing with respect to the center section, characterized in that each resilient float element is coupled between the center section and the respective one of the first and second wings by a respective float linkage operable through a range of positions to vary a mechanical advantage between the resilient float element and the respective wing, and that the movement of the float linkage reduces the mechanical advantage as the force output in the corresponding resilient float element increases, and the movement of the float linkage increases the mechanical advantage as the force output in the corresponding resilient float element decreases so that change of an overall wing float force applied to the wing by the resilient float element is subdued.