Thom,
I pull a 48" spike aerator and a 48" thatcher at the same time behind my 106 in 2nd gear at about 1/4 throttle. The aerator and thatcher both have 3 cement blocks on them for weight. The aerator goes in about 2-3" depending on how hard the ground is. The main problem is not power to pull them but weight to keep from slipping. An old cub cadet weighs more than most 26 hp Lowe's special do now.
I pull a 48" spike aerator and a 48" thatcher at the same time behind my 106 in 2nd gear at about 1/4 throttle. The aerator and thatcher both have 3 cement blocks on them for weight. The aerator goes in about 2-3" depending on how hard the ground is. The main problem is not power to pull them but weight to keep from slipping. An old cub cadet weighs more than most 26 hp Lowe's special do now.