Posted by Leroy on August 26, 2009 at 05:38:25 from (209.143.52.66):
In Reply to: rotary harrow posted by mike3320 on August 25, 2009 at 15:25:18:
It seems that every one here is confusing a rotary harrow with a rotary hoe, big difference. The rotary harrows I have seen are a spike tooth type on a big (about 10' diameter pipe ring, wheel rim) and on that ring there are multiple spokes to a center hub and on each spoke there are spike tooth harrow teeth set at an angle like you would have in a regular spike tooth harrow. Those bars go to a center hub that is fastened to a 3 point hitch mounting frame. When the harrow is pulled the angle of the teeth cause the complete wheel to rotate and in rotating the teeth will cut in the soil in all directions and make a very fine seed bed, worked up as good as a disk or field cultivator would do, perhaps even finer. Could be a one time over tool to use on plowed fields before planting. Field must be clean tho with no trash. They would require a lot of HP tho. Some instead of relying on the action of the teeth to rotate the big harrow wheel were made that the PTO of the tractor caused the rotation of the wheel. Were not very popular. A neighbor had the ground drive model laying in his junk row for many a year and it sold at his estate auction, do not know what became of it. And never seen it at work but have seen different adds for them. This is in the corn belt.
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