JD S785i Output/grain loss issues

[Goldilocks]

After years of running Lexions we changed to John deere a couple of years ago. Have been dissapointed with output and losses particularly in damp conditions . Issue is thrashing capacity and rotor losses not sieve losses ( we cut with fairly wide open sieves and take rubbish out of sample using cleaner in grain store ). Just wondering if anyone has come across any useful mods e.g. aftermarket concave conversions etc to try to improve the machine in damp/heavy yielding situations?

 

[Flatlander]

After years of running Lexions we changed to John deere a couple of years ago. Have been dissapointed with output and losses particularly in damp conditions . Issue is thrashing capacity and rotor losses not sieve losses ( we cut with fairly wide open sieves and take rubbish out of sample using cleaner in grain store ). Just wondering if anyone has come across any useful mods e.g. aftermarket concave conversions etc to try to improve the machine in damp/heavy yielding situations?

Not strictly related to your deeres but I’ve put key stock on the rotor grates in a rotary lexion to roll the straw mat over part way thru the rotors. I was plagued by rotor loss in wheat but after this seive loss is the limiting factor.
nit familiar with your combine or if it’s even rotary but food for thought.

 

[KB6930]

There's a S series that I know of that's had a lot of things changed because of this in the separation area but it's still the same . I know the driver but don't know what's all been done to it . The manufacturers are saying that the losses are minimal but it doesn't look good when it's growing in strips up the field .

 

[Goldilocks]

There's a S series that I know of that's had a lot of things changed because of this in the separation area but it's still the same . I know the driver but don't know what's all been done to it . The manufacturers are saying that the losses are minimal but it doesn't look good when it's growing in strips up the field .

Yes very easy for the sales people to quote low losses but reality is that it doesnt come close to the Lexion in threshing ability and lack of losses.

 

[willyorkshire]

Yes very easy for the sales people to quote low losses but reality is that it doesnt come close to the Lexion in threshing ability and lack of losses.

Buy Axial Flow. Problem solved!

 

[Fish]

Buy Axial Flow. Problem solved!

Don’t worry, AFs will spit grain out for fun in damp conditions.

 

[willyorkshire]

Don’t worry, AFs will spit grain out for fun in damp conditions.

They all do that!

 

[homefarm]

No experience with Deere but must be similar to AFs

Remember its a spin dryer not a mangle, wide drum and fast rotor, wide wire concave in second position to let the threshed grain out early and most importantly even feed into the elevator.

The biggest improvement in output on the axial we had was the vario header.

 

[nelson]

sell it for a claas

 

[Spencer]

Damp straw carries out grain in a rotary, can’t get round it. Drums in APS on Class get some out before rotors, that’s about it in a nutshell. See above

 

[Magnus Oyke]

After years of running Lexions we changed to John deere a couple of years ago. Have been dissapointed with output and losses particularly in damp conditions . Issue is thrashing capacity and rotor losses not sieve losses ( we cut with fairly wide open sieves and take rubbish out of sample using cleaner in grain store ). Just wondering if anyone has come across any useful mods e.g. aftermarket concave conversions etc to try to improve the machine in damp/heavy yielding situations?

What model did you have before and what prompted you to switch brands?

 

[Goldilocks]

We had a narrow bodied 760TT with 10.5 m header and super long auger working on 10m controlled traffic. Threshing ability was amazing and losses virtually zero with no stripes behind machine.Minor issues were feeding in header ,especially OSR ( Claas headers are much better now especially with belt header option ) , tank size was a bit small for controlled traffic ( need to be able to cut whole length of field without unloading when opening lands ), Guidance was a bit hit and miss, super long auger didnt fold ( i bent it on a tree once which was expensive! )
JD theoretically ticked a lot of boxes ( good header feeding, large grain tank , folding unloading auger, as good or better chopping and spreading ( or so they claimed ) less guidance issues as whole farm now on JD RTK and lines all coincide. Final decider was £60,000 cheaper price tag.
Not sure i would make the same decision if i could wind the clock back..............................

 

[Flatlander]

We had a narrow bodied 760TT with 10.5 m header and super long auger working on 10m controlled traffic. Threshing ability was amazing and losses virtually zero with no stripes behind machine.Minor issues were feeding in header ,especially OSR ( Claas headers are much better now especially with belt header option ) , tank size was a bit small for controlled traffic ( need to be able to cut whole length of field without unloading when opening lands ), Guidance was a bit hit and miss, super long auger didnt fold ( i bent it on a tree once which was expensive! )
JD theoretically ticked a lot of boxes ( good header feeding, large grain tank , folding unloading auger, as good or better chopping and spreading ( or so they claimed ) less guidance issues as whole farm now on JD RTK and lines all coincide. Final decider was £60,000 cheaper price tag.
Not sure i would make the same decision if i could wind the clock back..............................

Is the 760 a narrow body. Here in Manitoba they are wide body.

 

[Goldilocks]

Is the 760 a narrow body. Here in Manitoba they are wide body.

The Claas model naming is a bit confusing .The narrow body used to be the 750 then they changed all the model numbers and the largest output narrow combine became a 760

 

[Spencer]

Is the 760 a narrow body. Here in Manitoba they are wide body.

Pre 2013 was wide body, post 2013 narrow body

 

[snarling bee]

Having demo'd a JD s series, I wasnt impressed.
Having had 2 CRs, and now on a 770 Lexion, I am impressed how a Claas deals with damp conditions in the threshing department. I am so unimpressed with the 40' Claas header that I have bought a used MacDon. Shame I can't change the MB V8 engine for something with a bit more staying power.

 

[willyorkshire]

Having demo'd a JD s series, I wasnt impressed.
Having had 2 CRs, and now on a 770 Lexion, I am impressed how a Claas deals with damp conditions in the threshing department. I am so unimpressed with the 40' Claas header that I have bought a used MacDon. Shame I can't change the MB V8 engine for something with a bit more staying power.

Always been underpowered.

 

[Pingu]

Having demo'd a JD s series, I wasnt impressed.
Having had 2 CRs, and now on a 770 Lexion, I am impressed how a Claas deals with damp conditions in the threshing department. I am so unimpressed with the 40' Claas header that I have bought a used MacDon. Shame I can't change the MB V8 engine for something with a bit more staying power.

Have a word with Steinbauer had the 770 here done for this season and she will hold on cruise at 102% all day long with no issues only gone to 625hp same as a 780 but it really helped in season just gone with 1100 out of 1600 acres of high yielding 4+ft straw wheat (the joys of the fens green long straw) on the deck I do have a convio flex which helps massively had it converted for 21 season. The engine I am in love with it for holding on now it will grunt down better now but just been my findings since it’s had its little help. Just a suggestion if your not on maxicare etc

 

[snarling bee]

Already remapped to 780 spec. Still dies suddenly. Iveco in CR was much better. Apparantly MB 6 cyl or MAN engines are better.

 

[L P]

After years of running Lexions we changed to John deere a couple of years ago. Have been dissapointed with output and losses particularly in damp conditions . Issue is thrashing capacity and rotor losses not sieve losses ( we cut with fairly wide open sieves and take rubbish out of sample using cleaner in grain store ). Just wondering if anyone has come across any useful mods e.g. aftermarket concave conversions etc to try to improve the machine in damp/heavy yielding situations?

What settings are you running in wheat? Hopefully you're not relying on automated ones. Deere rotaries don't do well with tight concave and high drum speed... in principle they are so similiar to lexion, but you can't drive them like a lexion.