Near Intersection of I-35 & I-90 Southern Mn. | This does not answer the original question about what is needed for this situation but presents some observations I have made. If your time is valuable, STOP reading now.
Auto steer or Assisted steer can work well with a combine but the results depend on other factors. If the crop being harvested is a drilled crop such as soybeans or small grain, using a steering system based on new AB lines or the previously planted AB lines can work well.
Crops that are planted in rows may have less desirable results. In my case we plant corn and soybeans with a 24-30" planter. We have no small grain.
If I had 30' heads, I could take either the left or the right set of 12 rows. There would be no concern about guess rows.
However, I have a 35' soybean head so the guess rows are involved often. The 35' head does allow me some "grace" so guess row variations are rarely a problem on flat land. If I harvest at an angle, I can setup the steering for a slightly narrower pass to avoid missing some areas. This works fine.
For corn harvest, I use an 8 row head. This means that I can harvest the left, right or center set of 8 rows. I do not have the guess row concern. However, I found that using the planted AB lines does not center the head as accurately as I desire. Even with flat land, there is some planter drift. This is using the same GPS which was used on the planting tractor which has TerraStar Pro C for correction. Maybe using RTK for correction would result in better accuracy.
Right or wrong, I added a feeler system on the corn head.
This means for soybeans I use the Ag Leader Steady Steer system based on GPS based AB lines. The Ag Leader Steady Steer motor is controlled by the Ag Leader steering controller.
For corn, I move a plug so the Ag Leader Steady Steer motor is controlled by the Headsight controller which uses the feeler assembly on the corn head as an input.
Having two steering systems does increase the cost. I am happy with this arrangement of using AB lines for harvesting soybeans but feelers for harvesting corn. Your results may vary.
Edited by tedbear 7/15/2025 06:54
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Pro 700 on combine, what to add steering?
