new to massey 9790 - The Combine Forum
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post #1 of 6 (permalink) Old 05-08-2019, 10:58 AM Thread Starter
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new to massey 9790

Greetings all. We have a new to us Massey 9790 (2004) and would like to know what is the best setup for the concave/rub bars, etc. for small grains. Wheat, peas, flax. Have used Sunnybrook and Harvest Services stuff in the past in the conventionals, but have no knowledge of the rotary aftermarket stuff at all. Thanks for any input,

H

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post #2 of 6 (permalink) Old 05-08-2019, 11:28 AM
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The concaves are simple to swap so get yourself a set of wide spaced concaves and at least 4 narrow spaced concaves. the front 3 alot of times can be blanked off. If growing canola you might want to run with a full set of narrow as you don't need blanks. When threshing keep your concave as wide as possible it reduces material break up. If saving the straw for baling remove atleast 3 knives maybe 6. As for after market we always ran with original MF concaves. Another thing make sure your concave is zeroed out and parallel to the rotor.

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post #3 of 6 (permalink) Old 05-08-2019, 05:39 PM
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Originally Posted by Southey View Post
Greetings all. We have a new to us Massey 9790 (2004) and would like to know what is the best setup for the concave/rub bars, etc. for small grains. Wheat, peas, flax. Have used Sunnybrook and Harvest Services stuff in the past in the conventionals, but have no knowledge of the rotary aftermarket stuff at all. Thanks for any input,

H
Depending on how hard your wheat is to thrash you may not need cover plates because of the "pinch point". Don't use knives in the rotor, they are pointless for anything but taking the pressure off the chopper. Some guys on here will disagree but the stock setup is pretty good. Oh and don't fall into the slow rotor/open concave trap.
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post #4 of 6 (permalink) Old 05-08-2019, 09:24 PM
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Oh and don't fall into the slow rotor/open concave trap.
Excellent recipe to puke over 25% of tough threshing wheat.
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post #5 of 6 (permalink) Old 05-09-2019, 07:43 AM
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Yes whatever you do keep your concave as tight as you have too and your rotor speed at the top end. I didn't mean dropping it open!
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post #6 of 6 (permalink) Old 05-09-2019, 10:59 AM
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I donít think most forum members realize when we talk Canadian hard red spring wheat varieties just how hard they can be to thresh.
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