I have seen a tweaked neighbor make a pull behind mower by pulling an old axle from something, somehow fashioning a blade to be spun by the pumpkin gears on the axle.
So as it is pulled the tires turn the axle, spinning the gears and therefore turning the blade! Must have either fashioned his own blade or pulled them from an old bush hog mower which there are plenty rotting in pastures of old stalk choppers.
It seemed to work but he had to be moving with some speed lol. You should have seen the tweakfest.
However it seemed like a good idea and could work for something like your application.
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