2 Row Planter Progress

Added: 2026-04-29

This video demonstrates how to calculate mechanical ratios for agricultural equipment, specifically a two-row planter. The farmer calculates that a 28:19 gearbox ratio requires 1.47 input rotations per output rotation, then determines sprocket sizes (12-tooth and 50-tooth) to achieve a 4.7:1.47 rotation ratio between the drive tire and plate. The math shows that 4.7 tire rotations (400 inches) with 40.8 seeds dropped results in 9.8-inch seed spacing, yielding approximately 21,500 seeds per acre. This illustrates how mechanical ratios directly affect planting accuracy and seed population density in agricultural machinery.