Ploughing with rtk

blaser

Member
Hello, I'm new to ploughing, but have a semi mounted plough and rtk. Can anyone give me some pointers on how to set up the GPS, like di I need an offset! Thanks in advance.
 

Boysground

Member
Mixed Farmer
Location
Wiltshire
I’ve tried and never got it right. A little bit of sideways movement from the plough puts it out just enough to mean the plough is not following the furrow perfectly next time.
I just use the steering to strike out now.

Im sure others on TFF have got it working, I think it’s better with an on land plough

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e3120

Member
Mixed Farmer
Location
Northumberland
To my mind, unless your plough and track widths perfectly match to put the middle of the working width (furrow wall to rear landside) in the middle of the tractor, then the offset would need to be swapped L to R each pass.

But, like my GPS, my mind is simple at times.
 

Bury the Trash

Member
Mixed Farmer
To my mind, unless your plough and track widths perfectly match to put the middle of the working width (furrow wall to rear landside) in the middle of the tractor, then the offset would need to be swapped L to R each pass.

But, like my GPS, my mind is simple at times.
No I think you are right .
There's a kv advert vid on here somewhere and it would explain a simplistic reason why they havnt got it set up quite right.
 

Boysground

Member
Mixed Farmer
Location
Wiltshire
There seems to be a number of you tube clips of GPS ploughing but most seem to be on land.
I do find the gps useful for making headlands. I put the headland width on the field map and my system beeps when the front of the tractor hits the mark, its better than me marking the headland. I then use the inside headland wayline if I am turning the furrow in from the headland for the first turn.
I am no champion ploughman, it tends to make me look better than I am and is quite satisfying when the plough matches fairly well with the edge of the field.

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KB6930

Member
Location
Borders
On land or in furrow?

I've 2 kv ploughs both in furrow 1 of them you can plough with GPS 90 % of the time the other absolutely not a chance.



I've a mate with an on land semi lemken and he does it all the time he was tell me about setting his gps one day and he lost me 🤷‍♂️
 
Location
North
On land would be easy. No need to worry about offsets except that coverage painting will not be correct. Just set the AB-line distance to the width the plough works.

This works to some extent also when ploughing in furrow. Adjust the AB-line distance marginally narrower than the plough width. This allows room for the tractor to steer both left and right a bit when needed. Starts to fail if the soil type changes a lot and the plough does not follow the tractor equally everywhere.

I did in-furrow ploughing with RTK and auto-steer some time but then built a plough width controller. The tractor can freely follow the furrow and the controller adjusts the plough width when necessary to reach a straight line. It even allows ploughing edge shaped fields in a "fan" type mode, furrows being narrower at one end of the field and continuously adjusting towards the other end. No need for the operator to estimate the correct plough width to finalise the field.

This commercial system was referred to at the AOG forum:
but it only works with some specific Trimble screens. Topcon has (or had) their own product, probably some other commercial tools.
 

Robt

Member
Location
Suffolk
Sorry I forgot to mention we will be ontop.
If on top. It’s easy. No offsets needed . ( you don’t need them either if you plough in furrow )
Measure the actual working width of your plough. Remember if you make a width setting, it won’t be correct until the 3rd bout after . Many get this wrong and then spend all the time correcting a fault that isn’t there .
 

Chae1

Member
Location
Aberdeenshire
I do 95% of my in furrow ploughing with rtk autosteer. You just need to mess about with implement width sometimes. I've a small offset in mine for some reason too. My ploughing wouldn't win any awards. Its fantastic for marking fields out and finishing.
20211202_153011.jpg
 
Location
North
I do 95% of my in furrow ploughing with rtk autosteer. You just need to mess about with implement width sometimes. I've a small offset in mine for some reason too. My ploughing wouldn't win any awards. Its fantastic for marking fields out and finishing.

I believe your offset is for a different purpose from that discussed earlier on. One cannot apply the offset that describes how the plough coverage centre differs from the centre of the tractor. This would not work because this offset would be different depending which way the plough is turned.

Perhaps you have the same issue as I have with our Kverneland plough. For some odd reason our plough follows the tractor with a bit different offset (ignoring the left/right direction, just centre of tractor to centre of plough) when turned left compared to that when turned to right. I feel this should not happen but it still is there. Not a big difference but noticeable enough and can be fixed with a small implement offset setting.
 

Andy12345

Member
Location
Somerset
I believe your offset is for a different purpose from that discussed earlier on. One cannot apply the offset that describes how the plough coverage centre differs from the centre of the tractor. This would not work because this offset would be different depending which way the plough is turned.

Perhaps you have the same issue as I have with our Kverneland plough. For some odd reason our plough follows the tractor with a bit different offset (ignoring the left/right direction, just centre of tractor to centre of plough) when turned left compared to that when turned to right. I feel this should not happen but it still is there. Not a big difference but noticeable enough and can be fixed with a small implement offset setting.
I have exactly the same problem with our LO 85 ploughing onland, for some reason the plough pulls slightly wider with the right hand bodies so have to use an offset (which will vary with soil type) to overcome the issue!
 

blaser

Member
It's 7 furrows so is it as simple as 7x 16" or is it better to do a run and measure what you have turned over? And were would you take your front too back measurement meaning from drawbar to middle of the plough or the land wheel?
 
Location
North
It's 7 furrows so is it as simple as 7x 16" or is it better to do a run and measure what you have turned over? And were would you take your front too back measurement meaning from drawbar to middle of the plough or the land wheel?

It should be that simple but better to measure the true width.

The plough distance from the drawbar would only matter for mapping which would likely anyway not work perfectly. Even if you were driving contour lines instead of AB-lines, most of the auto-steer systems would drive the tractor (pivot point) along the wayline, probably on Fendt and latest other AGCO brands having the option to steer the implement to the wayline.
 

oval

Member
Get on fine ploughing in furrow on rtk only problem is on steep side slopes when it can try to run out furrow to keep straight ok on flat or undulating land tho .
Measure actual width of plough with tape measure no offset needed works good for me
 

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