much to do with what is being cut. We have a mix of tall grasses/blue stem/fescue/Midland bermuda/dried red clover and other weeds. My nighbors 30 pto hp Kubota wouldn't turn my 6' 172 Rhino but in second gear low axle. He uses a 4' mower.
My previous tractor had 38 pto hp and would run 4th gear low axle at max rpm.
My current 50 hp (44 pto) has no probs in 2nd gear high axle at max pto speeds.
I know I'm repeating this from last year, but I run a 7260SC (6ft.) Montana rotary with my Montana 2740 with no issues as long as I leave the FEL on. I've found that as ground speed increases, the quality of the cut decreases, so I mow in 4th gear anyway. With R4s, tractor width is about 64 inches, so a 6 footer covers the tracks nicely.....Dan
Farm & tractor pics New Montana mower 015 (Small).jpg