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Improved shank design deals with trash

Morris Industries has introduced a new shank design for its Contour drill. The Contour drill features ultra-precise seed and fertilizer placement over changing field landscapes. The new shank design improves trash clearance through the heaviest crop residues.

The Contour 2, the next generation of the seeding system, offers all the great features of the original Contour drill, but now has a 60 per cent improvement in opener clearance, says Randy Ellis, director of marketing.

“With the new shank design, farmers can work through the heaviest straw and stubble with much less chance of trash getting caught and bunching up,” says Ellis. “We have done extensive testing of the new design in both Canada and Australia and it handles all trash conditions very well.”

The company has made two major changes to the shank design to improve trash flow. The distance to the lowest trash catch point from the ground was increased from 13.5 to 21 inches, and the angle of the shank has been reclined 12 degrees. (See accompanying diagram which shows the original Contour drill design in blue and the new Contour 2 design in red.)

“So there is 60 per cent more height or clearance between the ground and the lowest catch point on the shank, and with the reclining shank, trash moves up and off the shank much faster,” says Ellis.

Also as part of the redesign, the opener cam has been positioned higher, near the top of the shank, for easier adjustment.

While farmers in Western Canada have generally been seen as doing a good job of crop residue management, the new shank design with improved trash clearance has a good fit in traditional high production areas, as well in the so-called dryer areas, which in recent years have received higher growing season precipitation and higher yielding crops with more crop residue.

The Contour 2 drill still features the one-to-one parallel linkage system for maintaining constant opener angle relative to the soil. The system offers constant opener depth relative to the packer wheel, which has 17 inches of travel range as it follows the ground. The opener can contour 10 inches up and seven inches down.

Morris also plans to re-launch a much improved sectional control system for its seeding equipment. The company had earlier introduced a couple of prototype shut-off systems that used slides over the meter rollers to start and stop the flow of seed and fertilizer.

Recognizing that the mechanism was too slow to achieve the best efficiencies of a sectional shut-off, the company has now developed a mechanical gear drive system. The new system uses a small hydraulic control to instantly disengage or engage a gear on the meter roller.

Ellis says with final testing early in 2012, the company plans to re-introduce an improved sectional control for 2013 models. †

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Field Editor

Lee Hart

Lee Hart is editor of Cattleman’s Corner based in Calgary.

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