I remember that my father had one on the old 8N for a while. He farmed 20 acres with it, including mowing, plowing, disking, planting, and cultivating. Mowing and planting were done with modified horse-drawn equipment, with me riding in the seat to work the pedals and levers. I don't recall how long he used the spinner, but it disappeared somewhere along the way. I thought it was rather scandelous, since all of the kids my age who had brothers old enough to drive called them "necker's knobs": they allowed you to drive with only one hand...
The 8N outlasted my father, although the spinner has been long gone. I still have it (and the 20 acres), but the thing burns so much oil that I can hardly stand to use it (hope to overhaul it some day). Since the cropland is now farmed by a fellow who works about 2000 acres in the area, I bought a BX23 to handle all the remaining digging, mowing, grading, tilling, and spraying tasks. I can steer the '23 with one finger, so no need for a spinner on it.
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