[77deereman]

Hello, I am new to the sts combines having just purchased a 9650sts last fall. I have run 7720T II's for years great combines just thought it was time to upgrade a few years. My crops are wheat, soybeans, peas, and corn. Question I have is , I have read other posts on here that 3 oem Deere small wire concaves are less than ideal most of the time in wheat. The combine came with the round bar concaves and smooth threshing elements, both are out now and not going back in. I bought a set of oem serrated threshing elements and a set of large wire concaves for my beans, peas, and corn, was wondering if I should run one narrow spaced loewen hectical in the front with small wire on the other two or if the hectical is aggressive enough that I could run a hectical in the front and leave the large wire in the mid and rear and run a few cover plates, prob on 5 where the return dumps back in. Just trying to save some $

 

[agsoldier]

Good day. The combination i use is as follows front one large wire, then the two rear concaves are all small wire. This does seem to increase capacity slightly with out overlaoding the cleaning shoe to much. Losses seem to be acceptable aslong as the speed is not too high. hope this helps

 

[cjfarm11]

77deereman very good question! im in the same boat. Im running all small wires with coverplates in 1,2,3, and 5. Cleans wheat fairly well but have a loss issue over the rotor.

 

[Auscocky]

Probably not comparing apples for apples (or wheat for wheat to be precise) but in Au I use small, small, large. That way I can leave the large wire in and just change the front two.

 

[fjlip]

We use all small, cover 1,2,3 and 5. Rotor at 950, concave 10-14.
Dockage typically 1% max. Acceptable loss, 50bu wheat, 35' swath at 4.5mph.

 

[cjfarm11]

i can seem to get that much ground in 50 bushel wheat. when i try it losses it over the rotor.

 

[cjfarm11]

anyone tried the estes disruptor with the open rear concave?

 

[Victor Redance]

All extra narrow no filler plates concave 18 - 20.

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VR

 

[oregongleaner]

Amen to the extra narrows. We have not run a cover plate since we went to the PFP concaves. We run 2 extra narrows, 2 narrows and a JD small wire in rear, sometimes pulling wires for more separation. If you cover the concaves you are asking for rotor loss, as you have no separation in covered area.

 

[CForest]

Is there a difference in narrow wire vs the deere small wire? You guys running jd small wire do you have interupter bars in them also?

 

[77deereman]

Thanks for the responses, have any of you used a loewen small wire hectical in your combines on the first concave? And if so in your opinion is it worth the cost?

 

[cjfarm11]

Im not tunning any interupter bars.

 

[phantom970]

Thanks for the responses, have any of you used a loewen small wire hectical in your combines on the first concave? And if so in your opinion is it worth the cost?

Yes, and no its not worth it, not in AUS grains anyway.

 

[Duane H]

I run a 9650 and a 9750 and run large wire in all three and just use fillers as I need. Crops are peas wheat canola flax and soybeans.

 

[agsoldier]

We also do not use any cover plates my understanding of cover plates was for use in hard to stituations. By changing 1 concave to a large wire we reduced losses to acceptable levels but two overlaoded the sieves and looses where on the cleaning shoe. Rotor speed should aslo help would look at together with a reduced ground speed to try and find the sweet spot.

 

[77deereman]

Ag solider , you use a large wire on the front one and small wire on center and rear? Just want to make sure I got that correct. Thought maybe too much unthreshed wheat would fall through if large wire was first?

 

[komatsu65]

JD9770 , four extra narrow precision farm parts concaves , one john deere wide wire . wheat, flax, canola, barley. no cover plates anywhere, just finished the third year with this setup and cant think of any reason to change it. running 14-18 concave clearance in wheat, 35 0r more in canola.

 

[cjfarm11]

i cant believe that you can get away with running the concave so far open. I have tried that and left ALOT of wheat in the head.

 

[jdstsman]

We run a 9750 and 9760 and use Kuchar threshing elements and Howard concaves. We grow durum, canola, lentils and soybeans and never have to change concaves.

 

[fjlip]

JDSTS, what concave setting, what rotor RPM?