Kingdom of Callaway - Fulton, Mo 65251 | The problem I see that folks do is buy too small of a single screw. If you are incorporating lots of hay in your ration, you need a big ol gal. If it doesn't hold enough, it starts throwing hay out, or doesn't have enough room for the hay to get down to the knives, especially if you drop two bales in at once.
I have a 720 Cloverdale single screw that holds 715 cubic feet with the rubber ring. We added a one foot extension, so it holds about 830 cubic feet. Downside is you need a tall loader to fill it or use a ramp. Upside is its a lot simpler than a twin, and the knives are constantly chopping - no dead space.
We typically mix 15k pound loads in it. This morning's ration in order was two alfalfa round bales, two bags of mineral, two fescue bales, 6000 pounds of potato waste, one bale of straw, and 3000 pounds of syrup. Sometimes silage and grain replaces some of the above. Takes 30 min to load and mix up. When feeding bales from a chopping baler, it really speeds it up. I also should change my knives more often.
Before we fed as much byproducts, we added water to the mix to help it stay down in the tub in the knives better and therefore mix faster. You just have to do your figuring with dry matter.
Ive tried a couple other brands of twin screws and at least for me, they took more hp, and took longer to go from empty to discharging feed. They also were longer and not as handy getting around as a single screw. Your results may vary....
I think with a twin screw that order of filling doesn't matter as much, and you can get one that holds more than mine does.
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Educate me on single screw tub mixers
