FARGO, N.D. — Unverferth brought its new Brent 2017 Vision Series grain carts to the Big Iron farm show in Fargo earlier this year to show that the bent auger-corner auger-single auger concept is alive and well.
“The Vision Series is a whole new cart design for 2017, addressing the four main concerns farmers have,” said Unverferth’s Shawn Berry, adding that the single auger or corner auger design is not dead.
“Vision gives operators fast unload speed, good spout reach, good spout vision and easy cleanout.
“First, look at the way the auger departs the tank. The auger lies in there at a very shallow departure angle. That pitches the auger further forward. When you open the flow gate, your grain drops by gravity down into the auger naturally. It doesn’t have to work around sideways. It flows forward.”
Berry said the Unverferth U-joint geometry at the auger base allows it to point up and out so the spout is near the left side of the operator’s head.
As a result, the operator doesn’t have to crank his neck around to see where the grain is dumping. Plus, in this new design, the spout rotates in four directions instead of just in and out, giving the operator better control to place the spout exactly where he wants it.
“The joystick takes the auger up and down, left and right, and lifts it high enough to clear the exhaust pipes on the newer trucks with those tall pipes. Guys really appreciate that.
“There’s a lot of heavy grain going through that bend, so we install a really massive heavy U-joint. It looks like something out of a Peterbilt. We’ve had this same U-joint in some of our other carts for about six or seven years without any problems. It’s strong.”
To cope with the shock of sudden power take-off engagement, Unverferth engineers use a soft-start rubber cushion system that synchronizes the top auger to the bottom auger. When the shafts come around, there’s only one spot they can engage.
“Think about how many hours you’re actually running the auger,” Berry said.
“In 26 operating hours, you move about a million bushels. Grain carts spend very little time actually unloading grain. They spend most of their time hauling the grain.
“That’s why we don’t have brakes on these corner auger-single auger carts. We believe a loaded grain cart should not be pulled on a public road.
“A grain cart is designed to transfer grain from the combine to the semi in the field. The semi is the machine with the brakes.
“But we do put brakes on the bigger 1,500 bushel and 2,000 bu. carts. Those are what we call the floor auger or double auger carts. They have hydraulic brakes with actuator in the tractor cab. They’re used to control the heavy cart when running downhill. Brakes are available for wheels only, not for tracks.”
Berry said building a bigger grain cart isn’t as simple as just making it bigger. Comparing single auger carts to double auger carts is like comparing apples to oranges. The floor auger cart is a completely different concept. For one thing, the double auger carts have rubber suspension at the front to help reduce shock loads on the units.
Most Brent customers start with the smaller corner auger carts from 600 to 1,000 bu. However, Berry said it’s a whole different game when it’s time to move up to 1,500 or 2,000 bu.
He said carrying that much volume using the same design as the corner auger cart is dangerous because the cart gets too tall.
That’s why engineers developed the double auger cart with a lower centre of gravity and a floor auger to bring the grain forward to the unload auger.
Tracks are vital when the carts get that big, he added.
“We do offer tracks on the smaller carts, but definitely when you get into the range of 2,000 bu., then you really should have tracks. Our new Equalizer tracks can carry a fully loaded 2,000 bu. cart with only 15 (pounds per sq. inch) ground pressure, whereas an 850 bu. cart on tires can exert up to 24 p.s.i.
“So I’m trying to fill my Super B. With my small grain cart on tires, I’m making three high-compaction trips across my field. Or I can use my 2,000 bu. cart on tracks and make just one single gentle trip across the field. Which do I use?”
Berry said tractor power is a consideration when you’re doubling up from a 1,000 bu. cart to a 2,000 bu. cart. He said 300 horsepower is the absolute minimum power but only if you’re on relatively level ground. If you have hills, you need more power.
“We deal a lot in Western Canada,” he said.
“I see most guys putting their big 600 h.p. tractor on our 2,000 bu. carts. That may seem like overkill, but he’s servicing four or five combines, so he needs that power.”